File Compressor
Make your files smaller
UtilityDone's File Compressor makes PDFs, photos, videos, music and Office files smaller, for free, right in your browser. Pick the type of file, choose how small it should get, and download the smaller file.
How to compress a file
- 1Choose your files, or drop them onto the box. You can add as many as you like; the type is picked from the files you add, or choose it yourself.
- 2For images, move the Quality slider or type a Target size. For PDFs, documents, audio and video, pick Light, Recommended or Strong (videos can also take a Target size).
- 3Click Compress. Each file shows its size before and after, and how much smaller it got.
- 4Download each file, or Download all to get every file in one ZIP.
One compressor for every kind of file
Every file is compressed with the method that suits it best. JPG photos are re-encoded with MozJPEG, which makes noticeably smaller files than a normal JPG encoder at the same quality. PNG images use fewer colours with dithering, the same idea as TinyPNG, or stay fully lossless at the top of the slider. WebP and AVIF images are re-encoded with Google's libwebp and libavif.
PDFs get two passes: the photos inside are re-compressed, then QPDF rewrites the file itself more tightly, packing its objects together and removing what isn't used. Videos and audio are re-encoded at a lower bitrate. Word, Excel and PowerPoint files have the pictures inside them compressed. Any other file is put in a ZIP.
Choose a quality, or a size
Images get a Quality slider, from smaller files on the left to better quality on the right; around 70 is a good balance for most photos. PDFs, documents, audio and video get three levels instead: Light barely changes the file, Recommended is the best balance, and Strong makes the smallest file.
For images and videos, Target size works the other way round: you say how big the file may be and the compressor finds the best quality that fits. Pictures and videos are made smaller in pixels when that's the only way to get there. If a file can't get under the size you asked for, you get the smallest version possible and a note saying so.
What to expect
How much smaller a file gets depends on what's in it. Photos, scanned PDFs and videos usually shrink a lot. Files that are already compressed, like most MP4 downloads, or PDFs that are mostly text, shrink less. If compressing doesn't make a file smaller, you keep the original, so you never end up with a bigger file.
Frequently asked questions
Is the File Compressor free?
Yes. It's free to use, with no sign-up and no watermark.
Will my file keep its format?
Yes, a JPG stays a JPG and a PDF stays a PDF. The exceptions are lossless audio (WAV, FLAC and AIFF), which becomes MP3, and files with no format-specific method, which are put in a ZIP.
Can I compress a file to an exact size?
Images and videos can: pick Target size and type the largest size the file may be. The compressor finds the best quality under that size.
Can I compress different kinds of files together?
One kind at a time, since each kind has its own settings. Compress your photos, then clear them and add your PDFs.
Can I compress many files at once?
Yes. Add as many files as you like, then download them one by one or all together in a ZIP.
Why didn't my file get much smaller?
Some files are already compressed as far as they can go without losing quality. Try a lower quality, or the Strong level.