Which archives can I compress?

ZIP, 7Z, TAR.GZ, TAR.BZ2 and TAR.XZ. Each file comes back in its own format, just smaller.

Does compressing archives reduce quality?

No. Archive compression is lossless; every file inside extracts byte-for-byte identical.

Can I compress archives to a specific size?

No. Lossless compression can't be aimed at an exact size; the result depends on what's inside.

Are my archives uploaded?

Archives are compressed in an isolated cloud sandbox created for your job; uploads and results are deleted automatically.

Can I compress several archives at once?

Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, mixing formats if you like, then download them individually or as one ZIP.

ZIP→smaller ZIP→7Z 7Z→smaller ZIP→TAR.GZ TAR.GZ→smaller ZIP→TAR TAR.BZ2→smaller ZIP→TAR.BZ2 TAR.XZ→smaller ZIP→TAR.XZ JPG→smaller 7Z→ZIP PNG→smaller 7Z→TAR.GZ MP4→smaller 7Z→TAR MP3→smaller 7Z→TAR.BZ2 PDF→smaller 7Z→TAR.XZ WebP→smaller TAR.GZ→ZIP HEIC→smaller TAR.GZ→7Z DOCX→smaller TAR.GZ→TAR TAR.GZ→TAR.BZ2 GIF→smaller TAR.GZ→TAR.XZ TAR.BZ2→ZIP SVG→smaller TAR.BZ2→7Z TAR.BZ2→TAR.GZ MOV→smaller TAR.BZ2→TAR TAR.BZ2→TAR.XZ AVIF→smaller TAR.XZ→ZIP TAR.XZ→7Z M4A→smaller TAR.XZ→TAR.GZ TAR.XZ→TAR WebM→smaller TAR.XZ→TAR.BZ2 PNG→JPG MKV→smaller JPG→PNG PNG→WebP XLSX→smaller JPG→WebP WebP→PNG EPUB→smaller WebP→JPG HEIC→PNG AVI→smaller HEIC→JPG MP4→MP3 FLAC→smaller PNG→JPEG JPG→JPEG PPTX→smaller JPEG→PNG JPEG→JPG AAC→smaller PNG→PDF JPG→PDF TIFF→smaller PDF→PNG PDF→JPG OGG→smaller HEIC→WebP MP4→WebP Opus→smaller PDF→DOCX DOCX→PDF ODT→smaller JPEG→WebP WebP→JPEG ODS→smaller PNG→GIF JPG→GIF ODP→smaller GIF→PNG GIF→JPG MP4→MOV MOV→MP4 WebP→PDF HEIC→JPEG WebP→GIF GIF→WebP HEIC→PDF MP3→WAV WAV→MP3 JPEG→PDF PDF→JPEG SVG→PNG SVG→JPG HEIC→GIF MOV→MP3 MP4→GIF GIF→MP4 JPEG→GIF GIF→JPEG PNG→AVIF JPG→AVIF AVIF→PNG AVIF→JPG MP3→M4A M4A→MP3 GIF→PDF SVG→PDF PNG→SVG JPG→SVG PDF→SVG SVG→WebP MOV→WebP MP4→WAV MP4→WebM WebM→MP4 WebP→AVIF AVIF→WebP WebP→SVG SVG→JPEG MP4→MKV MKV→MP4 HEIC→AVIF MP4→M4A JPEG→AVIF AVIF→JPEG JPEG→SVG MOV→GIF GIF→MOV WebM→MP3 AVIF→PDF MP3→FLAC FLAC→MP3 MP4→AVI AVI→MP4 MKV→MP3 GIF→AVIF AVIF→GIF SVG→GIF GIF→SVG WebM→WebP MOV→WAV XLSX→PDF CSV→PDF EPUB→PDF PDF→EPUB MOV→WebM WebM→MOV MKV→WebP PNG→ICO JPG→ICO ICO→PNG ICO→JPG MP3→AAC WAV→M4A AAC→MP3 M4A→WAV

Compress Archives

Repack ZIP, 7Z and TAR archives at maximum compression, with byte-identical contents. Free, processed in an isolated sandbox and deleted automatically.

Isolated cloud sandbox, auto-deleted
Lossless: identical contents
Batch & ZIP download

5 archives formats

Why archives can't be compressed to a size

Archive compression is lossless: nothing inside is changed or thrown away, so how small an archive gets depends entirely on its contents. Text, code and uncompressed files shrink well; photos, videos and other archives barely change. To make those smaller, compress them individually first, for example with the image or video compressor.

How to compress archives

1
Add your archives
Drop archives onto the compressor. You can mix ZIP, 7Z or TAR.GZ in one batch.
2
Keep the default
Archive compression is lossless, so there's nothing to tune.
3
Compress
Click Compress. Each file stays in its own format and comes back smaller.
4
Download
Download files one by one, or everything at once as a ZIP.

Compress other files

Compressing archives: frequently asked questions

Free, private and in your browser

Lighter archives, in seconds.

No sign-up, no watermark. Files are processed in an isolated sandbox and deleted automatically.

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Most conversions never leave your device
Cloud files deleted automatically
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