URL-safe Base64
Encode/decode URL-safe Base64 (- and _ instead of + and /).
About URL-safe Base64
Encode/decode URL-safe Base64 (- and _ instead of + and /). 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
What does this tool do?
Encode/decode URL-safe Base64 (- and _ instead of + and /).
Is my data sent to a server?
No. This tool runs 100% in your browser. Nothing is uploaded, tracked, or stored remotely.
What extra features does this tool have?
Extras: (1) Drag-and-drop file upload; (2) Bulk processing; (3) Live preview; (4) Multiple format support; (5) Quality/size controls; (6) Preset configurations; (7) Export as ZIP; (8) Copy to clipboard; (9) History (localStorage); (10) PWA offline; (11) Privacy-first; (12) WCAG compliant.
Does this work offline?
Yes — install as a PWA and use it without network.
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