ToolFree — Free online tools that run entirely in your browser
6 free tools, no signup, no file size limits. Every tool on this site runs 100% in your browser. Your files are never uploaded to any server.
Image tools
Compress Image Online
Compress JPG, PNG and WebP images right in your browser. No upload, no signup, no visible quality loss. Free and private.
Compress Image to 20KB, 50KB or 100KB
Shrink any photo to an exact file size — 20KB, 50KB, 100KB or your own target. Runs locally in your browser, no upload.
Resize Image Online
Resize JPG, PNG and WebP by pixels or percentage. Keep the aspect ratio or set exact dimensions. No upload, no watermark.
Developer tools
JSON Formatter & Validator
Format, validate and minify JSON instantly in your browser. Pinpoints the exact error line. No upload, no length limit.
Base64 Encode & Decode
Encode text or images to Base64 and decode Base64 back to text or a file. Runs offline in your browser, no upload.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and back. Live epoch clock, timezone aware, runs fully in your browser.
Why everything runs in your browser
Most "free online tool" sites upload your file to their server, process it, then let you download the result. That is slow, and it means a copy of your data sits on infrastructure you do not control.
Every tool here does its work using the browser's own APIs — Canvas for images, WebCrypto for hashing, the built-in JSON parser for data. Nothing is uploaded, which means it is faster, private, and still works after you lose your connection.
Request a feature or report a problem
Missing a tool you need, or something not working? Tell me what you were trying to do. Leave a way to contact you if you want a reply.