Compress images online
The best free online tools to compress images, ranked and filterable.
13 tools to compress images
SVG Optimizer
SVG
CompressNow
JPG, PNG, GIF
Compressor.io
JPG, PNG, SVG
GiftOfSpeed
JPG
ImageRecycle
JPG, PNG, PDF
Kraken.io
JPG, PNG; JPG, PNG, GIF
Optimizilla
JPG, PNG
Reduce Images
JPG, PNG
ShortPixel
JPG, PNG, WebP
Shrink.media
JPG, PNG
SVGO Online
SVG
Website Planet
JPG, PNG
PDF2Go
Comprehensive PDF management suite.
Side-by-side comparison
| Tool | Free | No signup | No watermark | Quality | Speed |
|---|---|---|---|---|---|
| SVG Optimizer | Yes | Yes | Yes | high | medium |
| CompressNow | No | Yes | Yes | high | medium |
| Compressor.io | No | Yes | Yes | high | medium |
| GiftOfSpeed | No | Yes | Yes | high | medium |
| ImageRecycle | No | Yes | Yes | high | medium |
| Kraken.io | No | Yes | Yes | high | medium |
| Optimizilla | No | Yes | Yes | high | medium |
| Reduce Images | No | Yes | Yes | high | medium |
Frequently asked questions
What's the best free tool to compress images?
We rank tools by "Best match" — free, no signup, no watermark, and quality. The top card above is usually the safest starting point to compress images.
Can I compress images without signing up?
Yes. Toggle "No signup" above and you'll only see tools that let you compress images straight from your browser, no account required.
Are these compress tools really free?
Most are fully free; some are freemium with paid limits. Use the "Pricing" filter to see only free tools, and check the limits on each card.
Will quality drop when I compress images?
Quality depends on the tool. Filter by "Quality: High" to only see tools we've graded as preserving fidelity when you compress images.