Free Online Image Tools
Convert, compress, resize, and pick colours from images - free image tools that run privately in your browser with no uploads.
About Image Tools
Switch formats with PNG to JPG, JPG to WebP, and more, shrink files with the Image Compressor, change dimensions with the Image Resizer, or sample colours with the Image Color Picker.
Every image tool processes your file on your device - nothing is uploaded to a server - which keeps even personal images completely private.
Resize before you compress
This is the largest available saving and the most commonly missed. A 4,000-pixel photograph displayed in an 800-pixel column carries 25 times more data than the screen can use. Resizing to the display size and then compressing routinely reduces a file by 95% — far more than any quality setting alone. Serve at roughly twice the CSS display width for sharpness on high-density screens, and no more.
Choosing a format
Photographs belong in AVIF or WebP with a JPEG fallback; AVIF is typically 30–50% smaller than WebP, which is 25–35% smaller than JPEG at equivalent quality. Screenshots, logos and anything containing text belong in PNG, because JPEG produces visible ringing around sharp edges — and text edges are as sharp as content gets. Anything vector should stay SVG, which scales to any size without loss.
Quality 85 is the practical standard for lossy compression: typically half the file size of quality 95 and visually indistinguishable at normal viewing distance.
What to watch for
- Generation loss. Each decode-edit-re-encode cycle of a lossy image destroys more information permanently. Keep the original and always re-export from it.
- Transparency. JPEG has no alpha channel, so converting a transparent image fills it with a solid colour — white by default, which shows as a box on any other background.
- EXIF data. Photographs carry camera details and often GPS coordinates. Most compressors strip this, which is usually desirable before publishing personal photographs.
- Upscaling. Enlarging invents detail that was never captured. It produces softness, not resolution.
Every image tool here runs in your browser, so personal photographs and unreleased design work are never uploaded.
Frequently Asked Questions
Are my images uploaded to convert or compress them?
No. All image tools run in your browser, so your images never leave your device.
Which format should I use for photos on a website?
WebP is usually best for web photos as it is smaller than JPG at similar quality; JPG is best for maximum compatibility.
Does compressing reduce quality?
At sensible settings the difference is usually invisible, while the file size drops significantly.
Why is my compressed image still large?
Most likely the dimensions rather than the quality setting. A 4,000-pixel image shown in an 800-pixel column carries 25 times more data than needed. Resize first, then compress.
Which image format should I use?
AVIF or WebP for photographs with a JPEG fallback, PNG for screenshots, logos and anything with text or transparency, and SVG for vector graphics. JPEG handles sharp edges badly.
Are my images uploaded when I convert them?
No. Every image tool here runs entirely in your browser using its own canvas and image APIs, so files never leave your device.