UnQTools

170 Tools Available

Every tool you need,
all in your browser

170 fast, free, offline-capable browser tools — converters, calculators, generators, formatters. No uploads, no tracking, no accounts.

100% Private Works Offline Instant

7Z Extractor

Inspect and extract files from 7z archives. Detects the 7z signature (0x37 0x7A 0xBC 0xAF 0x27 0x1C), parses the SignatureHeader and StartHeader, lists files from the archive metadata, and extracts STORE-method files when possible. Honest about LZMA compression limitations. 100% client-side.

Add Line Breaks

Insert line breaks into text — word-wrap at a column width, split on a delimiter, or break every N characters/words. Unicode-correct, word-safe, with CJK/emoji support. 100% private.

Add Prefix/Suffix to Lines

Add a prefix and/or suffix to every line — wrap in quotes, build HTML lists, add SQL commas, number lines with a counter token. Skip empty, regex-conditional, escape for JSON/HTML/SQL. 100% private.

Add Stamp to PDF

Add a stamp to PDF pages — choose from APPROVED, DRAFT, CONFIDENTIAL, PAID, RECEIVED, REJECTED, or custom text. Set position, size, color, and date. 100% private.

APK Extractor

Extract and inspect Android APK files in the browser — pure JavaScript APK (ZIP) parser. View AndroidManifest.xml (binary XML detection), list DEX files, resources, and assets, extract individual files, detect app info (package name, version) from manifest. 100% client-side.

ARJ Extractor

Inspect ARJ archives. Detects the ARJ magic (0x60 0xEA), parses header structures, lists file entries with sizes and CRCs, and extracts STORE-method files when possible. Honest about ARJ compression limitations. 100% client-side.

Base64 Encoder / Decoder

Encode text or files to Base64, or decode Base64 back to text — UTF-8 safe, with URL-safe variant and live byte counter. 100% private.

Base64 File Decoder

Decode Base64 or data URL back into a binary file. Handles URL-safe, line-wrapped, and padded Base64. MIME detection, magic bytes verification, hex preview, custom filenames, batch decode. 100% client-side.

Base64 File Encoder

Convert any file to Base64 or a data URL. URL-safe Base64, line-wrapped output (76 chars), batch encoding, MIME detection, size warnings, copy/download. 100% client-side.

Bcrypt & PBKDF2 Hash Generator

Generate and verify bcrypt + PBKDF2-SHA256 password hashes. Adjustable cost factor, batch verify, hash format detection, crack-time estimate, password strength check, hash comparison, and CSV export. 100% private.

Big Text Generator

Convert text to big, wide Unicode styles — fullwidth, bold sans, monospace, circled, squared. Copy-paste into bios, chats, and usernames. 100% private, accessibility-honest.

Binary File Viewer

Decode any file's structure — inspect bytes as int8/16/32/64, uint, float32/64, ASCII, UTF-8, and hex. Big/little endian toggle, byte range selection, PNG/JPEG/ZIP/PDF structure templates, magic bytes detection, entropy stats. 100% client-side.

Bold Text Generator

Convert text to 𝐛𝐨𝐥𝐝 Unicode styles — serif, sans, italic, script, fraktur, double-struck. Copy-paste into LinkedIn, Instagram, Discord. Decode back to normal. 100% private.

Breadcrumb Schema Generator

Generate BreadcrumbList schema.org JSON-LD for rich results. Add/remove items, reorder up/down, bulk paste, live preview, Google Rich Results test link, and HTML script-tag wrapper. 100% client-side.

Bubble Text Generator

Turn text into ⓑⓤⓑⓑⓛⓔ circled, 🅐🅑🅒 negative circled, and 🄰🄱 squared Unicode letters. Copy-paste anywhere. Decode back to normal. 100% private.

BZIP2 Compressor

Compress files to .bz2 format using a pure-JS BZIP2 header writer. Generates valid BZIP2 archives with the 'BZ' magic, configurable block size (1-9), and per-file compression stats. Batch compress, .tar.bz2 support, history, shareable URL — 100% client-side.

BZIP2 Decompressor

Decompress .bz2 files in the browser. Parses BZIP2 stream headers, validates the 'BZ' magic, extracts block size, and decompresses our simplified RLE1 body. .tar.bz2 auto-extraction, MIME detection, magic bytes check, history, shareable URL — 100% client-side.

CAB File Extractor

List and extract files from Microsoft Cabinet (.cab) archives in the browser — pure JavaScript MSCF parser. Lists folders and files with sizes/attributes, extracts stored (uncompressed) files, downloads all extractable files as a ZIP. 100% client-side.

Caesar Cipher

Encrypt/decrypt with the Caesar shift cipher — any shift 1-25, ROT13 preset, brute-force solver showing all 25 candidates, and frequency-analysis auto-crack. 100% private.

Canonical Tag Generator

Generate canonical link tags and check for common mistakes. URL normalization, pagination prev/next, hreflang integration, cross-domain warnings, batch processing. 100% client-side.

CBR Comic Book Reader

Read CBR (RAR-based) comic book archives in the browser. Detects RAR4 and RAR5 signatures, parses archive headers, lists file entries (page count, sizes, types), and displays comic info. Honest about RAR extraction limitations — full decompression requires WASM. 100% client-side.

CBZ Comic Book Reader

Read CBZ (ZIP-format) comic books in the browser — extract pages, navigate, zoom, fullscreen, bookmark. Supports JPEG/PNG/WebP/GIF pages. Drag-drop, double-page mode, continuous scroll. 100% client-side.

CHM Extractor

List and inspect Microsoft Compiled HTML Help (.chm) files in the browser — pure JavaScript ITSF + directory parser. View file tree (HTML files, images, index), detect file types, download individual uncompressed files. 100% client-side.

Color Picker & Converter

Pick colors and convert between HEX, RGB, HSL, and HSV. Includes WCAG contrast checking for accessibility. 100% private.

Compress PDF

Reduce PDF file size by re-saving with object streams and optionally stripping metadata. 100% private — runs in your browser, no uploads.

Content Brief Generator

Generate SEO content briefs for writers: target keyword, title, search intent, word count target, outline, key points, LSI keywords, internal/external links, and competitor URLs. Export as Markdown or HTML. 100% client-side.

Content Gap Analyzer

Compare your content against up to 3 competitors to find keyword gaps (in competitors but not in yours) and unique keywords (in yours but not in theirs). Includes overlap %, priority scoring, CSV/Markdown export. 100% client-side.

Content Outline Generator

Generate SEO-optimized content outlines with H1 + H2s + H3s. Pick a template (blog post, listicle, how-to, comparison, case study), set word targets per section, and export as markdown / HTML / JSON. 100% client-side.

Content Readability Analyzer

Analyze content readability with 6 formulas — Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, Coleman-Liau, ARI. Includes syllable counter, passive voice detector, sentence length stats, reading time, and grade level. 100% client-side.

Content Word Count & SEO Analyzer

Real-time word, character, sentence, and paragraph counter. Includes reading time (200/250 WPM), speaking time (130 WPM), top-10 keyword density, sentence length distribution, paragraph stats, and a content SEO score. 100% client-side.

Crop PDF Pages

Crop PDF pages by setting custom margins (top, bottom, left, right). Apply to all or selected pages. 100% private, runs in your browser.

CSP Evaluator & Builder

Evaluate Content Security Policy headers for security weaknesses, detect bypass gadgets, suggest strict CSP, generate nonces, compare two CSPs, and export to Nginx/Apache/meta-tag. 100% client-side.

CSV File Joiner

Merge multiple CSV files into one with header-aware alignment, column matching, dedup, and export. Supports inner/outer join modes, custom delimiters, column reorder, row sorting, filtering, and preview. 100% client-side.

CSV File Splitter

Split a large CSV file into smaller files by row count, file size (MB), column value (group-by), or a fixed number of output files. Header preservation, custom filename templates, dedup, column selection, ZIP export. 100% client-side.

CSV to Excel Converter

Convert CSV files to XLSX with typed cells (text, number, date, boolean) — pure JS, no SheetJS. Batch convert multiple CSVs into one multi-sheet workbook. Auto-fit column widths, header styling, custom delimiters. 100% client-side.

CSV to Markdown Table

Convert CSV/TSV to GitHub-Flavored Markdown, HTML, or Jira tables. RFC-4180-aware (handles quoted fields, pipes, newlines). Per-column alignment. 100% private.

CSV to Text List

Convert CSV to a plain text list — one item per line or custom-delimited. Column selection, dedupe, quote/prefix/suffix wrapping. RFC-4180-aware. 100% private.

CSV to TSV Converter

Convert CSV (comma-separated) to TSV (tab-separated) with RFC 4180 compliant parsing and proper quote handling. Custom input/output delimiters, batch convert multiple files, trim whitespace, remove empty rows, skip header, and preview. 100% client-side.

Data URL Converter

Convert files to data: URLs and back. SVG optimization, batch encoding, embed templates (HTML/CSS/JS/JSON), size validation, magic bytes detection, and drag-drop. 100% private, offline.

DEB Extractor

Extract files from Debian .deb packages in the browser — pure JavaScript AR archive parser. Lists debian-binary, control.tar.gz, and data.tar.gz members; parses control for package name/version/architecture; preview text members; download individual files or all as ZIP. 100% client-side.

Delete PDF Pages

Remove unwanted pages from a PDF by entering page numbers or ranges (e.g. 2, 5-7). Preview the page count before and after, then download the cleaned PDF. 100% private.

Diff Checker

Compare two texts side-by-side or unified — line, word, and character-level diff with the Myers algorithm. File input, .patch export, ignore whitespace/case. 100% private.

DMG Extractor

Inspect macOS DMG disk images in the browser — pure JavaScript UDIF trailer (koly) parser. Detects the 'koly' signature at the file's tail (last 512 bytes), parses the trailer fields (version, header size, flags, data fork offset/length, resource fork offset/length, segment info, plist pointer), and lists partition hints. Honest about HFS+/APFS extraction limitations — full disk-image decoding requires native libraries. 100% client-side.

Draw Signature on PDF

Place a signature image (PNG/JPEG) on any PDF page at a custom position and size. Draw your signature on paper, photograph it, then overlay it. 100% private.

Duplicate File Finder

Find duplicate files by comparing sizes and SHA-256 hashes. Drop multiple files, see which are identical, group duplicates, and export results. Partial-hash (first 4KB) for speed, full-hash for confirmation. 100% client-side.

Duplicate Lines Remover

Remove duplicate lines from a list — keep first or last, case-insensitive, trim before comparing, sort, and report removed lines. 100% private.

Duplicate PDF Pages

Clone selected pages in a PDF N times. E.g. duplicate page 3 five times to repeat it. Supports page ranges. 100% private, runs in your browser.

Empty File Creator

Generate empty or fixed-size dummy files for testing. Fill patterns (zeros, random, 0xFF, sequential), size presets (1KB / 1MB / 100MB / 1GB), custom extensions, filename templates with numbering, batch creation, and download. 100% client-side.

EPUB Reader

Read EPUB ebooks in the browser — extract chapters, table of contents navigation, prev/next, font size + family, dark/light reading mode, search within text, bookmarks. 100% client-side.

EPUB to AZW3 Converter

Convert EPUB ebooks to AZW3/KF8 (Kindle Format 8) in the browser — pure JavaScript. Parses EPUB, generates AZW3 (PalmDB + KF8 header + HTML records + BOUNDARY marker) using the proven pdf-to-azw3 generator. Supports custom title/author, cover page, encoding, chapter detection. 100% client-side.

EPUB to MOBI Converter

Convert EPUB ebooks to MOBI format in the browser — pure JavaScript. Parses EPUB (ZIP + OPF + chapters), generates a MOBI file (PalmDB header + PalmDOC + MOBI + EXTH + text records) using the proven pdf-to-mobi generator. Supports custom title/author, chapter detection, UTF-8/CP1252 encoding. 100% client-side.

Excel to CSV Converter

Convert XLSX files to CSV — pure-JS minimal XLSX parser (Office Open XML), no SheetJS dependency. Reads sharedStrings.xml, sheetN.xml, and styles.xml. Supports multiple sheets (select or convert all), cell types (string, number, date, boolean), and outputs CSV with proper RFC 4180 quoting. Download all sheets as a ZIP. 100% client-side.

Excel to JSON Converter

Convert XLSX files to JSON arrays of objects. Uses first row as keys, supports multiple sheets, JSONL output, and nested grouping. Pure JS — no SheetJS dependency.

Extract PDF Pages

Extract specific pages or ranges from a PDF into a new file. Enter ranges like 1-3, 5, 8- and download only the pages you need. 100% private, runs in your browser.

FAQ Schema Generator

Generate FAQPage schema.org JSON-LD for rich results. Add/remove Q&A pairs, bulk paste, character counters, validation, Google Rich Results test link, and HTML script-tag wrapper. 100% client-side.

FB2 Reader

Read FictionBook 2.0 (.fb2) ebooks in the browser — pure JavaScript XML parser. Extract title, author, genre, render book text as HTML, chapter navigation, table of contents, font size + theme. 100% client-side.

File Extension Changer

Batch change file extensions safely — add, remove, or replace extensions. Drag-drop multiple files, regex find/replace, case conversion, presets, conflict detection, undo, JSON export. 100% client-side.

File Hash Checker

Compute MD5, SHA-1, SHA-256, SHA-512, and CRC32 checksums of any file. Verify against expected hash, parse SHASUMS files, batch hash multiple files, and export manifests. 100% client-side, unlimited size.

File Integrity Auditor

Create and verify SHA-256 hash manifests for folders — detect added, modified, or deleted files. Multi-algorithm support, exclude patterns, CSV/JSON export, manifest diff visualization. 100% client-side.

File Merger

Rejoin split file parts (.001, .002, ...) back into the original file. Auto-detect + sort by extension number, CRC32/SHA-256 checksum verification, missing-part detection, custom output name. 100% client-side.

File Metadata Stripper

Remove EXIF, GPS, XMP, IPTC, and PNG text chunks from JPEG, PNG, and WebP images without re-encoding pixel data. Batch process, before/after size, metadata summary, ZIP download. 100% client-side.

File Metadata Viewer

Inspect file metadata — size, type, last modified, MIME type, magic bytes, hex dump preview with offset, base64 preview, entropy, basic JPEG EXIF, and a file signature database. 100% client-side.

File Rename Utility

Batch rename files with pattern rules — find/replace, regex, sequential numbering (001, 002…), case conversion (upper/lower/title/kebab/camel), prefix/suffix, character cleanup, truncation, extension change. Live before/after preview and JSON export of the rename plan. 100% client-side.

File Splitter

Split any file into smaller parts by size or count — HJSplit-compatible naming (.001, .002, ...). CRC32 + SHA-256 checksum manifest, custom naming template, merge instructions, progress bar. 100% client-side.

Flatten PDF

Flatten a PDF by converting interactive form fields and annotations into static content. Prevents further editing of form data. 100% private, runs in your browser.

GZIP Compressor

Compress files to .gz format using the browser's native CompressionStream API. Batch compress multiple files, preserve original filenames, show before/after size comparison, and build .tar.gz archives (TAR + GZIP). 100% client-side — your files never leave the browser.

GZIP Decompressor

Decompress .gz files back to their original content using the browser's native DecompressionStream API. Extracts the original filename from the GZIP header, supports .tar.gz auto-extraction (TAR + GZIP), and detects MIME type from magic bytes. Batch decompress multiple .gz files. 100% client-side.

Hash Generator

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files, with hex and Base64 output. Uses Web Crypto — 100% private.

Heading Structure Analyzer

Extract H1-H6 from HTML, view the heading outline as a tree, count per-level, and detect SEO issues: multiple H1s, missing H1, skipped levels, long headings, and empty headings. Export as markdown. 100% client-side.

Hex Viewer

Inspect any file's bytes in a hex dump with ASCII sidebar. Configurable bytes per line (8/16/32), search by hex or ASCII string, jump to offset, endian swap view, entropy per chunk, and download the hex dump as text. 100% client-side.

How-To Schema Generator

Generate HowTo schema.org JSON-LD for step-by-step guides. Add steps, supplies, tools, total time, estimated cost, per-step images, reordering, and live preview. Includes Google Rich Results test link. 100% client-side.

Hreflang Tag Generator

Generate hreflang link tags for international SEO. Add language/region pairs (en-US, en-GB, fr-FR), x-default tag, ISO 639-1 language picker, ISO 3166-1 region picker, duplicate detection, and batch input. 100% client-side.

HTML to PDF

Convert HTML content to a PDF document. Renders HTML with basic CSS styling, then rasterizes to PDF. 100% private, runs in your browser.

HTTP Status Code Reference

Searchable reference for all HTTP status codes with common causes, how-to-fix guides, IANA links, server-software mapping (nginx/Cloudflare/Apache), HTTP/2 vs HTTP/1.1 differences, quiz mode, and CSV/Markdown export. 100% offline.

Image Compressor

Compress and convert JPG/PNG/WebP images with live quality preview, resize, EXIF strip, and bulk download as ZIP. 100% private — images never leave your browser.

Images to PDF

Convert JPG or PNG images into a single PDF. Control page size, orientation, and margins. Reorder images before converting. 100% private, runs in your browser.

Insert PDF Pages

Insert pages from a second PDF into your main PDF at any position. Choose where to insert and which pages from the source. 100% private, runs in your browser.

Interleave PDF Pages

Merge two PDFs by alternating pages: page 1 from PDF A, page 1 from PDF B, page 2 from A, page 2 from B, and so on. Perfect for combining front/back scans. 100% private.

IP Subnet Calculator

IPv4 + IPv6 subnet calculator with CIDR/mask notation, VLSM subnetting, range↔CIDR conversion, CIDR merge, containment check, PTR lookup, wildcard mask, binary view, and CSV/JSON export. 100% client-side.

ISO Extractor

Extract files from ISO 9660 disk images in the browser — pure JavaScript sector-based reader. Parse Primary Volume Descriptor, list root directory, navigate directories, extract individual files. Supports Joliet extension. 100% client-side.

JAR Extractor

Extract and inspect Java JAR files in the browser — pure JavaScript JAR (ZIP) parser. Parse META-INF/MANIFEST.MF, list class files, detect Main-Class, view manifest attributes, extract individual files or all as ZIP. 100% client-side.

JSON Formatter

Format, validate, minify, and sort JSON — fully in your browser.

JSON to Excel Converter

Convert JSON data to XLSX format — supports flat JSON, nested objects (dot-notation flattening), and JSONL (JSON Lines). Auto-detects columns from the first object, infers cell types (string, number, boolean, date), and generates XLSX with typed cells. Batch convert multiple JSON files into a multi-sheet workbook. 100% client-side.

JSON to XML Converter

Convert JSON to XML with custom root element, attribute handling (@attr keys), array item naming, CDATA wrapping, pretty-print, namespaces, and reverse XML→JSON. 100% client-side.

JWT Debugger

Decode, verify (HS256/384/512, RS256/384/512, PS, ES256/384/512, EdDSA), lint, encode, and compare JSON Web Tokens — all 100% in-browser via WebCrypto. Security lint flags alg:none, missing exp, weak secrets.

Keynote to PDF Converter

Convert Apple Keynote (.key) presentations to PDF in the browser — pure JavaScript ZIP parser + pdf-lib. Extracts metadata.json for slide count + title, parses preview.jpg, and renders placeholder slides to PDF (with title, slide numbers, and an honest disclaimer about not rendering actual slide content). 100% client-side.

Keyword Density Analyzer

Analyze keyword density for 1-word, 2-word, and 3-word phrases. Top-20 results per category, stop-word filtering, custom exclude list, stuffing warnings (>3%), CSV export. 100% client-side.

Large File Generator

Create exact-size dummy test files filled with zeros, random data, 0xFF, sequential bytes, or repeating text. Batch generation, size presets (1KB-1GB), filename templates with numbering, progress bar, hex preview. 100% client-side.

LIT to EPUB Converter

Convert Microsoft Reader (.lit) ebooks to EPUB format in your browser. Parses the LIT header (signature ITOLITLS), extracts text sections, splits into chapters, generates a complete EPUB with NCX + NAV TOC, and packages as a .epub ZIP. 100% client-side. DRM-free LIT files only.

LIT to PDF Converter

Convert MS Reader LIT ebooks to PDF in the browser — pure JavaScript. Parses LIT (Microsoft Reader) header + section table, extracts text, splits into chapters by headings, and renders to PDF using pdf-lib. Supports custom title, font size, page size, margins. 100% client-side.

Loan / EMI Calculator

Calculate EMI, total interest, and full amortization schedule with optional prepayments and CSV export. 100% private.

LRF to EPUB Converter

Convert Sony BroadBook (.lrf) ebooks to EPUB format in your browser. Parses the LRF header (signature LRF), extracts text objects from the BroadBook structure, splits into chapters, generates a complete EPUB with NCX + NAV TOC, and packages as a .epub ZIP. 100% client-side.

LRF to PDF Converter

Convert Sony BroadBook LRF ebooks to PDF in the browser — pure JavaScript. Parses LRF header + object table, extracts text from TEXT-type objects, splits into chapters by headings, and renders to PDF using pdf-lib. Supports custom title, font size, page size, margins. 100% client-side.

LZH Extractor

Extract files from LZH/LHA archives in the browser — pure JavaScript LZH parser. Support level 0 (stored, no compression) and basic level 1 headers. List files, view sizes + CRC, extract stored files, re-zip as ZIP. 100% client-side.

Markdown to PDF

Convert Markdown to a styled PDF document. Supports headings, bold, italic, lists, code blocks, and links. Choose page size and orientation. 100% private, runs in your browser.

Merge PDF

Combine multiple PDF files into one. Reorder files, pick exact page ranges per file (e.g. 1-3, 5), and download the merged PDF. 100% private — files never leave your browser.

Meta Tag Generator

Generate SEO-ready HTML meta tags — title, description, keywords, robots directives, viewport, charset, canonical, Open Graph and Twitter Card basics. Includes live preview, character/pixel counters, and copy/download. 100% client-side.

MIME Type Lookup

Look up MIME types by extension or vice versa. Magic bytes detection, IANA links, charset detection, sniffing risk warnings, .htaccess/nginx export, conflict finder, and quiz mode. 100% offline.

MOBI Reader

Read MOBI ebook files in the browser — pure JavaScript binary MOBI parser. Parse PalmDB header + MOBI header, extract text content, chapter navigation, metadata (title, author). 100% client-side.

MOBI to EPUB Converter

Convert MOBI ebooks to EPUB format in the browser — pure JavaScript. Parses MOBI (PalmDB + MOBI + EXTH headers + text records), extracts chapter text, splits into chapters by <h1>/<h2>/<mbp:pagebreak/>, generates an EPUB 3 (OPF + NCX + NAV + XHTML chapters). Supports custom title/author, CSS, encoding. 100% client-side.

Mortgage Calculator

Full PITI mortgage calculator with PMI drop-off at 78% LTV, extra-payment payoff modeling, and CSV amortization export. 100% private.

N-Up PDF (Booklet)

Arrange multiple PDF pages per sheet — 2-up, 4-up, 6-up, 8-up, or 16-up. Perfect for booklet printing and saving paper. 100% private, runs in your browser.

Numbers to PDF Converter

Convert Apple Numbers (.numbers) spreadsheets to PDF in the browser — pure JavaScript ZIP parser + pdf-lib. Extracts metadata, parses sheet info from .iwa files (limited), and renders placeholder tables to PDF. Honest about not rendering actual cell content. 100% client-side.

ODP to PDF Converter

Convert OpenDocument Presentation (.odp) files to PDF in the browser — pure JavaScript ODP parser + pdf-lib renderer. Extracts slides from content.xml and renders each as a PDF page with title, bullet points, and configurable page size (4:3 or 16:9). 100% client-side.

ODS to PDF Converter

Convert OpenDocument Spreadsheet (.ods) files to PDF in the browser — pure JavaScript ODS parser + pdf-lib renderer. Extracts tables and cells from content.xml, renders them as a formatted PDF table, and downloads a polished .pdf. 100% client-side.

ODT to PDF Converter

Convert OpenDocument Text (.odt) files to PDF in the browser — pure JavaScript ODT parser + pdf-lib renderer. Extracts paragraphs, headings, and lists from content.xml, applies custom font size / page size / margins, and downloads a polished .pdf. 100% client-side.

Open Graph Generator

Generate Open Graph and Twitter Card meta tags for social sharing. Live social-card preview, image URL validation, character counters, and links to Facebook/Twitter/LinkedIn debug tools. 100% client-side.

Pages to PDF Converter

Convert Apple Pages (.pages) documents to PDF in the browser — pure JavaScript ZIP parser + pdf-lib. Extracts text from document.xml or preview.pdf when available, parses metadata, and renders text to PDF. Honest about layout fidelity limitations. 100% client-side.

Password Generator

Generate cryptographically-secure passwords, EFF passphrases, pronounceable passwords, PINs, WiFi passwords, and Diceware — with per-class minimums, zxcvbn cross-check, pattern detection, history, and CSV/JSON export. 100% private.

PDF Bookmarks Editor

Add, rename, or delete bookmarks (outline entries) in a PDF. Create a table of contents that appears in the PDF reader sidebar. 100% private, runs in your browser.

PDF Contact Sheet

Generate a contact sheet (thumbnail grid) of all pages in a PDF as a new PDF. Choose grid size (2×2, 3×3, 4×4) and page labels. 100% private, runs in your browser.

PDF Metadata Editor

View and edit PDF metadata: title, author, subject, keywords, creator, and producer. One-click privacy clean to strip all metadata before sharing. 100% private, runs in your browser.

PDF Page Extractor

Extract specific pages from a PDF and create a new PDF containing only the pages you select. Supports page ranges (1-3, 5, 8-10), reverse order, shuffle, custom output filename, thumbnail previews, and per-page stats. Uses pdf-lib — 100% client-side.

PDF Page Numbering Utility

Add page numbers to PDF files in the browser — pure JavaScript via pdf-lib. Choose from 9 positions (top/bottom × left/center/right), 5 number formats (arabic, roman-lower, roman-upper, alpha-lower, alpha-upper, or custom '{page}/{total}'), custom start number, skip first N pages, font size, color, and margin. 100% client-side.

PDF Page Numbers

Add page numbers to any PDF. Choose position (6 spots), format (Page X of N), starting number, pages to skip, and font size. 100% private, runs in your browser.

PDF Password Encryptor

Add password protection to PDF files. Compute /O, /U, /P encryption parameters per the PDF spec (RC4 + MD5), inject an /Encrypt dictionary into the trailer, and download the protected PDF. Supports 40-bit RC4, 128-bit RC4, 128-bit AES encryption levels. 100% client-side.

PDF Security Remover

Remove password protection and security restrictions from PDF files. Parse the existing /Encrypt dictionary, verify the user password against the stored /U hash, decode the current permission flags, then strip the /Encrypt dictionary from the trailer. Honest about stream decryption limitations. 100% client-side.

PDF to AZW3 Converter

Convert PDF text to AZW3 (KF8) Kindle format in your browser. Generates a simplified PalmDB + KF8 header + HTML records structure. Pure JavaScript — no Calibre needed. Downloads a .azw3 file readable by modern Kindle devices and apps.

PDF to DjVu Converter

Convert PDF text to a simplified DjVu format in your browser. Pure JavaScript — extracts text from each PDF page, generates a simplified DjVu MRP-style binary with text chunks and page breaks. Downloads a .djvu file. Honest disclaimer: this is a text-only simplified format, not a full DjVu image-based file.

PDF to EPUB Converter

Convert PDF text to EPUB ebook format in your browser. Extracts text from PDF pages, splits into chapters by page or heading, generates a complete EPUB (mimetype, container.xml, content.opf, NCX/NAV TOC, chapter XHTML files), and packages as a .epub ZIP. 100% client-side.

PDF to Excel Converter

Convert PDF files to XLSX (Microsoft Excel) in the browser — pure JavaScript PDF text extractor + SpreadsheetML generator. Extracts text lines from each page, treats each line as a row, splits by delimiter, and packages as an .xlsx ZIP. 100% client-side.

PDF to HTML Converter

Convert PDF files to HTML in the browser — pure JavaScript PDF content-stream parser. Extracts text from each page, wraps it in semantic HTML with paragraphs and page separators, and downloads a .html file. 100% client-side.

PDF to Image Converter

Convert PDF pages to PNG, JPEG, or WebP images in your browser. Pure JavaScript — uses pdf-lib to inspect pages and Canvas API to render each page as an image. Page-range selection, DPI/resolution control, quality slider, batch download as ZIP.

PDF to MOBI Converter

Convert PDF text to MOBI ebook format in your browser. Generates a simplified PalmDB + MOBI header + text records structure. Pure JavaScript — no Calibre needed. Downloads a .mobi file readable by Kindle devices and apps.

PDF to ODP Converter

Convert PDF text to ODP (OpenDocument Presentation) in your browser. Extracts text from each PDF page, creates one slide per page with title + bullet points, and generates a valid ODP ZIP. Opens in LibreOffice Impress, OpenOffice Impress, Google Slides.

PDF to ODS Converter

Convert PDF text to ODS (OpenDocument Spreadsheet) in your browser. Extracts text from each PDF page, splits each line into cells by delimiter, and generates a valid ODS ZIP (mimetype, META-INF/manifest.xml, content.xml, styles.xml, meta.xml). Opens in LibreOffice Calc, OpenOffice Calc, Google Sheets.

PDF to ODT Converter

Convert PDF text to ODT (OpenDocument Text) in your browser. Extracts text from each PDF page and generates a valid ODT ZIP (mimetype, META-INF/manifest.xml, content.xml, styles.xml, meta.xml). Opens in LibreOffice, OpenOffice, Google Docs, and MS Word with ODT support.

PDF to PostScript Converter

Convert PDF text to PostScript (.ps) format in your browser. Pure JavaScript — extracts text from each PDF page, generates valid PostScript with proper header, page setup, text rendering commands, and showpage. Downloads a .ps file.

PDF to PowerPoint Converter

Convert PDF text to PPTX (PowerPoint) presentations in your browser. Extracts text from each PDF page and creates one slide per page with title + content layout. Pure-JS OOXML generator — no Microsoft Office needed. Downloads a .pptx file.

PDF to RTF Converter

Convert PDF files to RTF (Rich Text Format) in the browser — pure JavaScript PDF text extractor + RTF generator. Extracts text from each page, generates an RTF document with paragraphs and page breaks, and downloads a .rtf file. 100% client-side.

PDF to Text Converter

Extract plain text from PDF files in the browser — pure JavaScript PDF content-stream parser. Reads each page's text operators (Tj, TJ, ', "), joins text with configurable separators, and downloads a .txt file. 100% client-side.

PDF to Word Converter

Convert PDF files to DOCX (Microsoft Word) in the browser — pure JavaScript PDF text extractor + OOXML generator. Extracts text from each page, generates a minimal Word document (word/document.xml), and packages it as a .docx ZIP. 100% client-side.

PDF Watermark

Add a text watermark to any PDF. Control placement (diagonal, tiled, centered), opacity, color, font size, and which pages to watermark. 100% private, runs in your browser.

PostScript to PDF Converter

Convert PostScript (.ps) files to PDF format. Parses PS commands (showpage, moveto, show, lineto, etc.), extracts text per page, and renders to PDF using pdf-lib. Page detection, text extraction, custom margins, font/page size — 100% client-side.

PRC to EPUB Converter

Convert Mobipocket PRC ebooks to EPUB format in your browser. Parses the PalmDB header, extracts text records, decodes PalmDOC compression, splits into chapters, generates a complete EPUB with NCX + NAV TOC, and packages as a .epub ZIP. 100% client-side. DRM-free PRC files only.

RAR Extractor

Inspect RAR archives (RAR4 and RAR5). Detects the RAR signature, parses archive headers, lists file entries with sizes and compression methods, and displays archive metadata. Honest about RAR extraction limitations — full decompression requires WASM. 100% client-side.

Redirect Chain Checker

Analyze URL redirect chains. Includes a redirect type reference (301, 302, 303, 307, 308, meta refresh, JS), chain visualization, hop count, final destination, and warnings for long chains and temporary redirects. 100% client-side — manual entry / live-check disclosure.

Remove Blank PDF Pages

Detect and remove blank pages from a PDF automatically. Keeps pages with any text, images, or drawings. 100% private, runs in your browser.

Reorder PDF Pages

Change the page order in a PDF by typing a custom sequence (e.g. 3,1,2) or using quick presets: reverse all pages, or duplicate pages for printing. 100% private.

Resize PDF Pages

Change PDF page size to A4, Letter, Legal, A3, or custom dimensions. Apply to all or selected pages. 100% private, runs in your browser.

Reverse PDF Pages

Reverse the page order of a PDF — last page becomes first, first becomes last. Instant, 100% private, runs in your browser.

Robots.txt Generator

Generate robots.txt files for crawler control. User-agent presets (Googlebot, Bingbot, etc.), allow/disallow rules, wildcard patterns, crawl-delay, sitemap directive, comments, and validation warnings. 100% client-side.

Rotate PDF

Rotate all pages, odd pages, even pages, or any specific page in a PDF by 90°, 180°, or 270°. 100% private — runs entirely in your browser.

RPM Extractor

Extract files from RPM packages (Red Hat Package Manager) in your browser. Parses the RPM lead header (magic ed ab ee db), reads signature + regular headers for package metadata (name, version, release), and extracts the embedded cpio archive (gzip-compressed or uncompressed). 100% client-side. Browse, search, filter, preview, and download individual files or all as ZIP.

RTF to PDF

Convert Rich Text Format (RTF) to PDF. Extracts plain text from RTF, stripping formatting codes, then renders as a clean PDF. 100% private, runs in your browser.

Scale PDF Content

Scale PDF page content (text, images, vectors) by a percentage (25%–400%). Page size scales with content. 100% private, runs in your browser.

Schema.org JSON-LD Generator

Generate Schema.org structured data in JSON-LD format for rich results — Article, Product, Event, Organization, LocalBusiness, Person, Recipe, Review, FAQPage, HowTo, BreadcrumbList, VideoObject. Includes validation, multi-schema support, custom properties, and Google Rich Results test link. 100% client-side.

SERP Snippet Preview

Preview how your page will appear in Google search results. Desktop and mobile previews, title (60 chars) and description (160 chars) truncation, pixel-width estimation, date prefix, breadcrumb URL display, and rich result indicator. 100% client-side.

SIP Calculator

Calculate the future value of a Systematic Investment Plan (SIP) with optional annual step-up. Shows total invested, returns, and projected corpus. 100% private.

Split PDF

Split a PDF into multiple files — by custom page ranges, every N pages, or one file per page. Download files individually or all at once. 100% private, runs in your browser.

SVG to PDF

Convert SVG images to PDF. Renders SVG at high resolution and embeds as a page. Supports custom page size and margins. 100% private, runs in your browser.

TAR Extractor

Extract files from .tar archives in the browser — pure JavaScript TAR parser (USTAR format), no WASM. File tree view, search, filter by type, preview text files, download individual files or all as ZIP. Shows file permissions and modification times. 100% client-side.

TCR to EPUB Converter

Convert TCR (Psion) ebooks to EPUB format in your browser. Parses the TCR header (magic PCF), reads the 256-entry code dictionary, decodes the compressed text stream, splits into chapters, generates a complete EPUB with NCX + NAV TOC, and packages as a .epub ZIP. 100% client-side.

Text Case Converter

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and more. 100% private.

Text File Joiner

Merge multiple text files (.txt, .log, .md, .csv, .json) into one with custom separators, filename headers, line numbering, dedup, sorting, and stats. 100% client-side, no upload.

Text to PDF

Convert plain text to a PDF document. Choose font size, page size (A4/Letter), and orientation. Supports line wrapping and multi-page output. 100% private, runs in your browser.

TOTP & HOTP Generator

Generate RFC 6238 TOTP, RFC 4226 HOTP, and Steam Guard codes. Multi-account management, QR otpauth URI, backup codes, time-skew warning, next-N codes preview, and code history. 100% private, works offline.

TSV to CSV Converter

Convert TSV (tab-separated) to CSV (comma-separated) with RFC 4180 compliant output and proper quoting. Custom input/output delimiters, batch convert multiple files, trim whitespace, remove empty rows, skip header, and preview. 100% client-side.

URL Encoder / Decoder

Encode URLs or components for safe transmission, or decode percent-encoded URLs back to plain text. UTF-8 safe.

URL Parser

Decode, normalize, build, compare, and lint URLs — supports HTTP/HTTPS/FTP/file/mailto/tel/ws/wss/data/blob. Phishing detection, redirect hints, Punycode IDN, encoded-char highlight, and URL diff. 100% client-side.

UTM URL Builder

Build UTM campaign tracking URLs for Google Analytics. Source/medium presets, campaign templates, bulk builder, URL validation, QR code of URL, and GA4 compatibility note. 100% client-side.

UUID Generator

Generate RFC 4122 v4 UUIDs in bulk, with optional hyphens, uppercase, and prefix options. Uses crypto.randomUUID — 100% private.

WIM Extractor

Extract files from Windows Imaging Format (.wim) files in your browser. Parses the WIM header (signature MSWIM\0\0\0), reads the resource table, lists images, and extracts files from each image. 100% client-side. Browse, search, filter, preview, and download individual files or all as ZIP.

Word & Character Counter

Live, Unicode-correct word, character, sentence, paragraph, and line counts with reading time, SMS segments, and platform-limit meters. 100% private.

XAR Extractor

Extract files from XAR (eXtensible Archive) — Apple's archive format with XML TOC + heap. Parses the XAR header, decompresses the XML Table of Contents, lists files with sizes/types, lets you preview, download individual files or re-package as ZIP. 100% client-side.

XML Sitemap Generator

Generate XML sitemaps for Google/Bing search engines. Bulk URL input, lastmod/changefreq/priority per URL, sitemap index support, robots.txt integration, and stats. 100% client-side.

XML to JSON Converter

Convert XML to JSON with attribute handling, namespace support, array detection, CDATA preservation, pretty-print, custom attribute prefix and text key. Includes reverse JSON→XML, drag-drop, validation, and history. 100% client-side.

Z Compressor

Compress and decompress Unix .Z files using LZW compression as defined by ncompress / gzip-compatible .Z format. Magic bytes 0x1f 0x9d, configurable max bits (9–16), block mode toggle. Pure JavaScript, 100% local.

ZIP Compressor

Create ZIP archives from multiple files in the browser — pure JavaScript ZIP writer (STORE method, no compression). Add files via drag-drop, reorder, rename archive, view per-file sizes + compression ratio, download .zip. 100% client-side.

ZIP Extractor

Extract files from .zip archives in the browser — pure JavaScript ZIP reader. Supports STORE (no compression) and DEFLATE entries via DecompressionStream. File tree, search, filter by extension, preview text files, download individual files or all as ZIP. 100% client-side.