Free file converter

Convert anything, right on your device

Compress GIFs, convert video, images, audio and PDF. No upload, no signup, no limits. Files never leave your computer.

Drop files here or click to choose

GIF, video, images, audio and PDF. No upload, everything stays on your device.

100% privateFiles are processed in your browser and never uploaded
Instant startNo upload queue, conversion begins the moment you drop a file
Free foreverNo account, no watermark, no daily limit, batch as much as you want

All tools

GIF tools

GIF compressorReduce GIF file size right in your browser.GIF to MP4Convert animated GIFs to MP4 video in your browser.

Video tools

MP4 to GIFTurn MP4 videos into animated GIFs in your browser.Video to GIFConvert MOV, WEBM, AVI, MKV or MP4 video to animated GIF in your browser.WEBM to MP4Convert WEBM videos to MP4 in your browser.MOV to MP4Convert iPhone and Mac MOV videos to MP4 in your browser.MP4 to WEBMConvert MP4 videos to WEBM in your browser.

Image tools

JPG compressorReduce JPG file size in your browser with a quality slider.PNG to JPGConvert PNG images to JPG in your browser, with batch support and a ZIP download.JPG to PNGConvert JPG images to lossless PNG in your browser.WEBP to PNGConvert WEBP images to PNG in your browser.PNG to WEBPConvert PNG images to modern WEBP in your browser.

Audio tools

MP4 to MP3Extract MP3 audio from MP4 video in your browser.WAV to MP3Convert WAV audio to MP3 in your browser.M4A to MP3Convert M4A and AAC audio to MP3 in your browser.

PDF tools

Image to PDFCombine JPG and PNG images into a single PDF in your browser.PDF to JPGTurn PDF pages into JPG images in your browser.

Why local conversion wins

Classic online converters upload your file to a server, process it there and send it back. That means waiting for two transfers, trusting a stranger with your data and living with file size caps that keep server bills down.

GIF Diet does the work directly in your browser using the same engine that powers professional tools, compiled to WebAssembly. Your hardware does the job, so conversion starts instantly, works offline once loaded and costs nothing to run at any size.

Frequently asked questions

How can this be free with no limits?

Conversion happens in your browser using your own device. We have no expensive servers processing your files, so we do not need to charge you or cap your usage.

Is there a file size limit?

No hard limit. Very large videos are limited only by your device memory. Files around 1 to 2 GB work on most modern computers.

Are my files private?

Yes, completely. Files are processed locally and never uploaded. You can even disconnect from the internet after the page loads and conversion still works.

What formats are supported?

GIF compression, video (MP4, MOV, WEBM, AVI, MKV), images (PNG, JPG, WEBP, BMP, SVG), audio (MP3, WAV, M4A, FLAC, OGG, AAC) and PDF to and from images.