# Compress Archives

> Compress ZIP, 7Z, TAR.GZ, TAR.BZ2 and TAR.XZ files online for free. Processed in an isolated cloud sandbox and deleted automatically. Repacked losslessly at maximum compression. No sign-up, no watermark.

URL: https://www.converterrr.com/compress-archives

## 5 archives formats

- [Compress ZIP](https://www.converterrr.com/compress-zip): lossless, cloud. Repacks every file at maximum compression; the contents are byte-identical.
- [Compress 7Z](https://www.converterrr.com/compress-7z): lossless, cloud. Repacks every file at maximum compression; the contents are byte-identical.
- [Compress TAR.GZ](https://www.converterrr.com/compress-tgz): lossless, cloud. Repacks at maximum gzip compression; the contents are byte-identical.
- [Compress TAR.BZ2](https://www.converterrr.com/compress-tbz2): lossless, cloud. Repacks at maximum bzip2 compression; the contents are byte-identical.
- [Compress TAR.XZ](https://www.converterrr.com/compress-txz): lossless, cloud. Repacks at maximum xz compression; the contents are byte-identical.

## 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. To make photos or videos inside smaller, compress them individually first.

## 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.

## Good to know

- Archive compression is lossless: every file inside is byte-identical after extraction.
- Already-compressed content like JPGs, MP4s or other archives can't shrink much further, which is why archives can't be aimed at a size or a percentage.
- Archives are compressed in an isolated cloud sandbox created for your job; uploads and results are deleted automatically.

## Compress other files

[Compress images](https://www.converterrr.com/compress-images), [Compress videos](https://www.converterrr.com/compress-videos), [Compress audio files](https://www.converterrr.com/compress-audio), [Compress documents](https://www.converterrr.com/compress-documents)

## Compressing archives: frequently asked questions

### 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.