What does compressing a file do?

It makes the file smaller while keeping its format. Depending on the format, that means re-encoding at a tuned quality or bitrate, recompressing embedded images, or repacking data at maximum compression.

What's the difference between Light, Balanced and Strong?

Light stays closest to the original and keeps full resolution. Balanced, the default, looks the same for most uses and is typically 40–70% smaller. Strong makes the smallest file, lowers quality and downscales large images and videos.

Can I compress a file to an exact size?

Yes, for lossy formats. Set a target size, like 100 KB for a form or 25 MB for an email, or a percentage to reduce by, and the file is compressed to land at or just under it.

Why can't SVG, FLAC and archives be compressed to a size?

Their compression is lossless: nothing is thrown away, so the result depends on the content and can't be dialled to an exact number. To get much smaller, convert them to a lossy format instead.

Which files stay on my device?

Images (except HEIC), video and audio are compressed in your browser and never uploaded. PDFs, Office documents, EPUB, HEIC and archives run in an isolated cloud sandbox and are deleted automatically.

When should I convert instead of compress?

When the format itself is the problem: a photo saved as PNG, a long GIF or a FLAC album. Converting to JPG, MP4 or MP3 shrinks those far more than compression can.

Yes. There's no watermark and no sign-up. Cloud jobs use the same free daily credits as cloud conversions.

JPG→smaller JPG→PNG PNG→smaller JPG→WebP MP4→smaller JPG→JPEG PDF→smaller JPG→PDF MP3→smaller JPG→GIF WebP→smaller JPG→AVIF HEIC→smaller JPG→SVG DOCX→smaller JPG→ICO GIF→smaller JPG→TIFF SVG→smaller JPG→BMP MOV→smaller JPG→PSD AVIF→smaller JPG→EPS M4A→smaller JPG→JXL JPG→TGA WebM→smaller JPG→DDS JPG→EXR MKV→smaller JPG→HDR JPG→JP2 XLSX→smaller JPG→CUR JPG→PPM EPUB→smaller JPG→QOI JPG→PCX AVI→smaller JPG→PGM JPG→PBM FLAC→smaller PDF→PNG PDF→JPG PPTX→smaller PDF→DOCX PDF→JPEG AAC→smaller PDF→SVG PDF→EPUB ZIP→smaller PDF→TXT PDF→HTML TIFF→smaller PDF→TIFF PDF→MOBI OGG→smaller PDF→AZW3 PDF→RTF Opus→smaller PDF→FB2 PDF→LIT 7Z→smaller PDF→PDB MP4→MP3 ODT→smaller MP4→WebP MP4→MOV TAR.GZ→smaller MP4→GIF MP4→WAV ODS→smaller MP4→WebM MP4→MKV ODP→smaller MP4→M4A MP4→AVI TAR.BZ2→smaller MP4→FLAC MP4→AAC TAR.XZ→smaller MP4→OGG MP4→WMV MP4→Opus MP4→M4V MP4→FLV MP4→MPEG MP4→3GP MP4→WMA MP4→TS MP4→MPG MP4→AIFF MP4→AMR MP4→VOB PNG→JPG PNG→WebP PNG→JPEG PNG→PDF PNG→GIF PNG→AVIF PNG→SVG PNG→ICO PNG→TIFF PNG→BMP PNG→PSD PNG→EPS PNG→JXL PNG→TGA PNG→DDS PNG→EXR PNG→HDR PNG→JP2 PNG→CUR PNG→PPM PNG→QOI PNG→PCX PNG→PGM PNG→PBM WebP→PNG WebP→JPG HEIC→PNG HEIC→JPG JPEG→PNG JPEG→JPG HEIC→WebP DOCX→PDF JPEG→WebP WebP→JPEG GIF→PNG GIF→JPG MOV→MP4 WebP→PDF HEIC→JPEG WebP→GIF GIF→WebP HEIC→PDF MP3→WAV WAV→MP3 JPEG→PDF SVG→PNG SVG→JPG HEIC→GIF MOV→MP3 GIF→MP4 JPEG→GIF GIF→JPEG AVIF→PNG AVIF→JPG MP3→M4A M4A→MP3 GIF→PDF SVG→PDF SVG→WebP MOV→WebP WebM→MP4 WebP→AVIF AVIF→WebP WebP→SVG SVG→JPEG

Compress files

Make images, videos, audio, PDFs and archives smaller, or hit an exact size for a form or an email. Same format out, just lighter.

Mostly in your browser
Same format, smaller file
Batch & ZIP download

Three levels, one job

Every lossy format uses the same three levels, so you know what you're getting whatever the file. Need something specific? Set a target size or a percentage to reduce by instead. Lossless formats (SVG, FLAC and archives) always come back with identical contents.

Light
Near-lossless. Re-encodes conservatively and keeps full resolution. Pick it when quality matters most.
BalancedDefault
The default. Looks and sounds the same for most uses, and is typically 40–70% smaller.
Strong
The smallest file. Lower quality, and large images and videos are downscaled.

Compress images

All images →

Compress videos

All videos →

Compress audio files

All audio files →

Compress documents

All documents →

Compress archives

All archives →

Popular sizes

Upload forms, email and chat apps often cap file size. Each page presets the target; the compressor also takes any size, or a percentage to reduce by.

Images

Videos

PDF

How to compress a file

1
Add files
Drop images, videos, audio, PDFs, Office documents or archives onto the compressor, or click to browse.
2
Choose a level or a target
Balanced suits most files. Light stays closest to the original; Strong makes the smallest file. Or set a target size or a percentage to reduce by.
3
Compress
Click Compress. Each file keeps its format; most are processed right in your browser.
4
Download
Download each smaller file, or everything at once as a ZIP.

Compressing files: frequently asked questions

Free, private and in your browser

Lighter files, same formats.

No sign-up, no watermark. Most files never leave your browser.

Compress a file Convert instead

Most conversions never leave your device
Cloud files deleted automatically
No watermarks