Drop your images
One or many; they are processed on your device.
Compress images for the web
Drop your images and get web-ready versions: a maximum width of 1920 pixels and WebP output, the combination that makes pages load faster. Nothing is uploaded.
- Free
- No sign-up
- Runs in your browser
Options
100% private — your images are compressed on your device and are never uploaded to any server.
Works with images up to about 60 MB each. GIFs are converted using their first frame. On an older phone, very large images may be slow.
Next step
Keep going with your result in another tool. Nothing is uploaded.
- Convert to WebPWebP is usually 25 to 35 % lighter than JPG at the same visible quality.
- Remove metadataPhotos can carry your location and camera details. Clean them before you share.
- Make a PDFTurn one or several images into a single PDF.
- Fit a size limitNeed it under 100 KB or 1 MB for a form? Set the limit and it does the rest.
How it works
Check the settings
The settings for this page are already set; change them if you like.
Download
Compare sizes, then download each file or a ZIP.
How to compress images for a website
To compress images for a website, drop them on the box above. This page is preset to a maximum width of 1920 pixels and WebP output, which typically makes photos 25% to 35% smaller than JPG at the same visible quality. Check the sizes shown and download the results. The work is done in your browser and the images are never uploaded.
Why image size matters
Images are usually the heaviest part of a web page. Big files slow the loading of the main image, which is what Google measures as Largest Contentful Paint, one of the Core Web Vitals, and slow pages lose visitors. Optimising images is often the cheapest speed improvement a site can make.
A checklist for web images
- Right dimensions: no wider than the biggest size they are shown at, 1920 px for full-width images.
- Modern format: WebP for photos and graphics, JPG as a fallback.
- Sensible quality: 75 to 85 is the usual sweet spot.
- Descriptive file names and alt text, which help accessibility and image search.
- Lazy loading for images below the fold.
JPG, PNG or WebP?
| Format | Best for | Transparency |
|---|---|---|
| WebP | Photos and graphics on the web | Yes |
| JPG | Photos when WebP is not accepted | No |
| PNG | Logos and screenshots that must stay lossless | Yes |
Keep your originals
Always keep the original files and publish the optimised copies. If you later need a bigger size or a different format, you can go back to the source instead of recompressing an already compressed image.
Private by design
Everything is calculated in your browser as you type; nothing is sent to a server.
Frequently asked questions
What is the best image format for websites?
WebP is the best all-round choice today: smaller than JPG and PNG, with transparency, and supported by every modern browser.
What width should web images be?
No wider than the largest size they are displayed at. 1920 px covers full-width images on most screens; smaller images can be 800 to 1200 px.
Does this improve SEO?
Faster pages help user experience and Core Web Vitals, which Google uses as a ranking signal, although content matters far more.
Is this converter free?
Yes. There is no sign-up and no limit, and it runs in your browser, so nothing you type is sent to a server.
Does it work on a phone?
Yes. It works in any modern mobile browser, and the result updates as you type.
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