# Compress files

> Make images, videos, audio, PDFs and archives smaller in seconds, or compress to an exact size like 100 KB or 25 MB. Most files never leave your browser. Free, no sign-up.

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

Popular: [Compress PDF](https://www.converterrr.com/compress-pdf), [Compress JPG](https://www.converterrr.com/compress-jpg), [Compress PNG](https://www.converterrr.com/compress-png), [Compress MP4](https://www.converterrr.com/compress-mp4).

## 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.

## Good to know

- Compression keeps the format: a JPG stays a JPG and a PDF stays a PDF, so the file works everywhere it did before.
- Most images and all video and audio are compressed right in your browser. HEIC, PDF, Office documents, EPUB and archives run in an isolated cloud sandbox and are deleted automatically.
- Lossless formats (SVG, FLAC and archives) come back with identical contents; lossy formats trade a little quality for a much smaller file.
- Need an exact size for a form or an email? Set a target size, or a percentage to reduce by, for any lossy format.

## Compress images

[All images](https://www.converterrr.com/compress-images)

- [Compress JPG](https://www.converterrr.com/compress-jpg): lossy, in the browser. Re-encodes with an optimised JPEG encoder at a tuned quality and strips bulky metadata.
- [Compress PNG](https://www.converterrr.com/compress-png): lossless or lossy, in the browser. Reduces the colour palette (lossy levels) and re-compresses at maximum zlib effort.
- [Compress WebP](https://www.converterrr.com/compress-webp): lossy, in the browser. Re-encodes WebP at a tuned quality with the slowest, most efficient encoder settings.
- [Compress AVIF](https://www.converterrr.com/compress-avif): lossy, in the browser. Re-encodes AVIF (AV1) at a tuned quality.
- [Compress GIF](https://www.converterrr.com/compress-gif): lossy, in the browser. Rebuilds the palette, drops redundant frame data and (on stronger levels) lowers the frame rate.
- [Compress HEIC](https://www.converterrr.com/compress-heic): lossy, cloud. Re-encodes HEIC at a tuned quality.
- [Compress TIFF](https://www.converterrr.com/compress-tiff): lossless or lossy, in the browser. Switches to efficient Deflate or JPEG compression inside the TIFF container.
- [Compress SVG](https://www.converterrr.com/compress-svg): lossless, in the browser. Minifies the markup: removes editor metadata, comments and redundant attributes.

## Compress videos

[All videos](https://www.converterrr.com/compress-videos)

- [Compress MP4](https://www.converterrr.com/compress-mp4): lossy, in the browser. Re-encodes the video at a lower bitrate (and resolution on Strong); audio is re-encoded to AAC.
- [Compress MOV](https://www.converterrr.com/compress-mov): lossy, in the browser. Re-encodes the video at a lower bitrate (and resolution on Strong).
- [Compress MKV](https://www.converterrr.com/compress-mkv): lossy, in the browser. Re-encodes the video at a lower bitrate (and resolution on Strong).
- [Compress WebM](https://www.converterrr.com/compress-webm): lossy, in the browser. Re-encodes VP9/Opus at a lower bitrate (and resolution on Strong).
- [Compress AVI](https://www.converterrr.com/compress-avi): lossy, in the browser. Re-encodes the video at a lower bitrate.

## Compress audio files

[All audio files](https://www.converterrr.com/compress-audio)

- [Compress MP3](https://www.converterrr.com/compress-mp3): lossy, in the browser. Re-encodes at a lower bitrate (Light 192 kbps, Balanced 128 kbps, Strong 96 kbps).
- [Compress M4A](https://www.converterrr.com/compress-m4a): lossy, in the browser. Re-encodes AAC at a lower bitrate.
- [Compress AAC](https://www.converterrr.com/compress-aac): lossy, in the browser. Re-encodes AAC at a lower bitrate.
- [Compress OGG](https://www.converterrr.com/compress-ogg): lossy, in the browser. Re-encodes at a lower bitrate.
- [Compress Opus](https://www.converterrr.com/compress-opus): lossy, in the browser. Re-encodes Opus at a lower bitrate.
- [Compress FLAC](https://www.converterrr.com/compress-flac): lossless, in the browser. Re-compresses at FLAC's maximum compression level; the audio stays bit-identical.

## Compress documents

[All documents](https://www.converterrr.com/compress-documents)

- [Compress PDF](https://www.converterrr.com/compress-pdf): lossy, cloud. Downsamples and recompresses images, subsets and compresses fonts, and removes duplicate data.
- [Compress DOCX](https://www.converterrr.com/compress-docx): lossy, cloud. Shrinks the embedded photos and repacks the document at maximum compression; text and layout are untouched.
- [Compress PPTX](https://www.converterrr.com/compress-pptx): lossy, cloud. Shrinks the embedded photos and repacks the document at maximum compression; text and layout are untouched.
- [Compress XLSX](https://www.converterrr.com/compress-xlsx): lossy, cloud. Shrinks the embedded photos and repacks the document at maximum compression; text and layout are untouched.
- [Compress ODT](https://www.converterrr.com/compress-odt): lossy, cloud. Shrinks the embedded photos and repacks the document at maximum compression; text and layout are untouched.
- [Compress ODP](https://www.converterrr.com/compress-odp): lossy, cloud. Shrinks the embedded photos and repacks the document at maximum compression; text and layout are untouched.
- [Compress ODS](https://www.converterrr.com/compress-ods): lossy, cloud. Shrinks the embedded photos and repacks the document at maximum compression; text and layout are untouched.
- [Compress EPUB](https://www.converterrr.com/compress-epub): lossy, cloud. Shrinks the embedded images and repacks the book at maximum compression; the text is untouched.

## Compress archives

[All archives](https://www.converterrr.com/compress-archives)

- [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.

## Popular sizes

Each page presets the target size; the compressor also takes any size, or a percentage to reduce by.

- [Compress image to 20 KB](https://www.converterrr.com/compress-image-to-20kb): Signatures & tiny photos
- [Compress image to 50 KB](https://www.converterrr.com/compress-image-to-50kb): ID photos & form uploads
- [Compress image to 100 KB](https://www.converterrr.com/compress-image-to-100kb): 100 KB upload limits
- [Compress image to 200 KB](https://www.converterrr.com/compress-image-to-200kb): Web images & listings
- [Compress image to 300 KB](https://www.converterrr.com/compress-image-to-300kb): Larger web images
- [Compress image to 500 KB](https://www.converterrr.com/compress-image-to-500kb): Hero images & forms
- [Compress image to 1 MB](https://www.converterrr.com/compress-image-to-1mb): Email & portal uploads
- [Compress image to 2 MB](https://www.converterrr.com/compress-image-to-2mb): High quality under 2 MB

- [Compress video to 8 MB](https://www.converterrr.com/compress-video-to-8mb): Chat app uploads
- [Compress video to 10 MB](https://www.converterrr.com/compress-video-to-10mb): 10 MB upload limits
- [Compress video to 25 MB](https://www.converterrr.com/compress-video-to-25mb): Email attachments
- [Compress video to 50 MB](https://www.converterrr.com/compress-video-to-50mb): Portals & bigger uploads
- [Compress video to 100 MB](https://www.converterrr.com/compress-video-to-100mb): Long videos, smaller

- [Compress PDF to 100 KB](https://www.converterrr.com/compress-pdf-to-100kb): Strict form uploads
- [Compress PDF to 200 KB](https://www.converterrr.com/compress-pdf-to-200kb): Scanned certificates
- [Compress PDF to 300 KB](https://www.converterrr.com/compress-pdf-to-300kb): Short scanned documents
- [Compress PDF to 500 KB](https://www.converterrr.com/compress-pdf-to-500kb): Résumés & cover letters
- [Compress PDF to 1 MB](https://www.converterrr.com/compress-pdf-to-1mb): Job portals & applications
- [Compress PDF to 2 MB](https://www.converterrr.com/compress-pdf-to-2mb): Portfolios & reports
- [Compress PDF to 5 MB](https://www.converterrr.com/compress-pdf-to-5mb): Email-friendly PDFs
- [Compress PDF to 10 MB](https://www.converterrr.com/compress-pdf-to-10mb): Large documents, emailable

## Compressing files: frequently asked questions

### 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.

### Is it free?

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