Compress PDF
Reduce PDF file size by re-saving with object streams and optionally stripping metadata. 100% private — runs in your browser, no uploads.
About Compress PDF
Reduce PDF file size by re-saving with object streams and optionally stripping metadata. 100% private — runs in your browser, no uploads. Everything runs locally in your browser — your data never leaves your device.
How to use
- Enter your input in the tool above.
- Adjust any options to your preference.
- Use the Copy or Download buttons to save the result.
- Everything happens locally — your data never leaves your browser.
FAQ
Are my PDFs uploaded to a server?
No. Compression runs entirely in your browser using JavaScript. Your files never leave your device, and the tool works offline.
How much size reduction can I expect?
Typically 10-40% for most PDFs. PDFs that are already heavily optimized or contain mostly compressed images (JPEG) may see little reduction. Object stream re-packaging and optional metadata stripping are the main savings.
Does compression affect image quality?
No. This tool re-saves the PDF using object streams (a structural optimization) and optionally strips metadata. It does NOT re-encode or downsample images, so visual quality is preserved exactly.
What does 'Strip metadata' do?
Removes the Title, Author, Subject, Keywords, Creator, and Producer fields from the PDF's document info dictionary. This reduces size slightly and also enhances privacy before sharing.
Related tools
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.
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.
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.