Compress Image
Shrink JPG, PNG and WebP files without wrecking how they look.
Smaller images, same picture
Large images slow down websites, clog up email and fill up phones. The fix is usually a single pass through a sensible compressor, not a new camera or a design tool.
This compressor runs entirely in your browser. Pick your files, choose a quality level, and download files that are dramatically smaller with no visible difference at normal viewing size.
How to compress an image
- Add one or more images.
- Set the quality. 80 is the safe default for photographs. 60 to 70 is good for web thumbnails.
- Choose the output format. WebP is usually the smallest, JPG is the most compatible.
- Press Compress and download.
The tool shows you the original size, the new size and the percentage saved before you commit.
What the quality setting actually does
The slider controls how much detail the encoder is allowed to throw away. At 0.9 the result is almost indistinguishable from the original at the cost of a larger file. At 0.6 you start to see softness in fine textures, but the file can be a quarter of the size.
For most uses, 0.8 is the sweet spot. For product photos and hero images on a website, try 0.85. For images that will only ever be viewed on a phone, 0.7 is plenty.
Where compressed images help most
- Website speed. Images are usually the heaviest part of a page. Cutting them in half is the fastest way to improve load time.
- Email limits. Most inboxes cap attachments around 20 to 25 MB. Compression gets a photo set under the limit.
- Storage. A phone full of screenshots and photos frees up quickly.
- Uploads forms. Many application portals reject images above a fixed size.
A note on PNG files
PNG is designed for graphics with flat colours, sharp edges and transparency. Re-encoding a screenshot as JPG often makes it larger and blurrier. If your file is a screenshot, keep it as PNG or switch to WebP. If it is a photograph, JPG or WebP will almost always be smaller.
Once your images are the right size, Resize Image can set exact dimensions, and Merge PDF can package them for sending.
Frequently asked
How much smaller will my image get?
It depends on the file. Photographs often drop by 60 to 85 percent at a quality setting of 0.8, with no visible change at normal viewing size. Screenshots and flat graphics compress differently because they have fewer colours.
Does compression ruin quality?
At the default setting, most people cannot tell the difference on screen. You can raise the quality slider if you need a sharper result, or lower it when file size matters more.
Which formats are supported?
JPG, PNG and WebP go in. You can save the result as JPG or WebP, which usually gives the smallest file.
Are my images uploaded?
No. Compression runs in your browser, so your photos never leave your device.
Can I compress several images at once?
Yes. Select a batch and each file is processed one after another.