How to compress an image
- Choose one or more photos, or drag them onto the box.
- Pick a quality. 70–80% keeps photos looking sharp while cutting the file size a lot.
- Pick a maximum size. Phone photos are often 4000 px wide; 1920 px is plenty for screens and email.
- Click Download next to each image.
Which settings should I use?
| Use | Max size | Format & quality |
|---|---|---|
| Email attachment | 1920 px | JPG, 75% |
| Online form with a size limit (e.g. 1 MB) | 1280–1920 px | JPG, 60–75% |
| Website or blog | 1280–1920 px | WebP, 70–80% |
| Instagram / Facebook | 1080 px | JPG, 80–85% |
| Screenshot with text | Original | PNG |
Is it private?
Yes. Compression happens inside your browser with the HTML canvas. Your images are never uploaded to a server, so this tool also works for personal documents such as ID photos.
JPG vs PNG vs WebP
- JPG: best for photos; small files; no transparency.
- PNG: best for screenshots, logos and images with transparency; larger files.
- WebP: modern format supported by current browsers; usually smaller than JPG at the same quality.
Image Compressor FAQs
Does compressing an image reduce quality?
A little. At 70–80% quality most people cannot see a difference on a screen, while the file is often several times smaller.
Are my photos uploaded?
No. Everything happens in your browser on your own device.
Why did a file not get smaller?
Some images are already compressed. If the new file would be bigger, the tool keeps the original. Try a lower quality, a smaller maximum size or the WebP format.
Can I compress HEIC photos from an iPhone?
Most browsers cannot open HEIC files. Share the photo as “Most Compatible” (JPG) from your iPhone first, then compress it here.