What is an image compressor?
Image compression re-saves a picture with a more efficient format and quality setting, and resizing reduces its pixel dimensions. Together they often cut a phone photo from several megabytes to a few hundred kilobytes with little visible change.
Features
- JPG, PNG, WebP and other browser-readable images in
- WebP or JPG out
- Quality slider and maximum width
- Batch up to 20 images
- Runs on your device; nothing uploaded
How to use the image compressor
- Choose or drop your images.
- Set quality and maximum width.
- Download each compressed image.
Recommended settings
| Use | Width | Quality |
|---|---|---|
| Website photos | 1280–1920 px | 70–80% |
| Exam and job forms (size limits like 50 KB) | 800 px | 50–60% |
| Email and WhatsApp | 800–1280 px | 70% |
| Printing | Keep original | 90%+ |
Frequently asked questions
Are my photos uploaded to a server?
No. Compression happens in your browser with the canvas API. Your images never leave your device.
Why did a file get bigger?
Already-optimised small images, or PNG graphics converted to JPG, can grow. Keep the original in that case.
Last updated 15 November 2026. Made by Criza Labs. Spotted a mistake? Tell us.