Image Compressor
An image compressor reduces the file size of a picture by re-encoding it more efficiently, so it loads faster and fits upload limits. This one keeps the original width and height, tries several quality levels, and gives you the smallest file it can make in the format you choose.
Compress an image
Compress Your Image
Reduce image file size while keeping the original dimensions.
Supported: JPG, JPEG, PNG, WebP · Maximum file size: 50MB
Compression Result
How to use the image compressor
- Select Choose Image and pick a JPG, PNG or WebP file (up to 50 MB).
- Pick a download format. WebP usually gives the smallest file; JPG is the safest choice for older software; PNG keeps transparency.
- Select Compress Image, compare the before and after sizes, then download the result.
If the compressed version would be larger than your original in the same format, the tool tells you the image is already optimized and keeps the original instead of handing you a bigger file.
How the compression works
The image is drawn onto an HTML canvas in your browser and exported again at several quality settings. JPG and WebP are lossy formats: they discard detail your eye is unlikely to notice, which is why photos often shrink by 60–90%. PNG is lossless, so re-saving a PNG as PNG rarely makes it much smaller. For a big PNG photo, switching the output to WebP or JPG is usually what makes the real difference.
Which format should you choose?
| Output | Best for | Transparency |
|---|---|---|
| WebP | Websites, smallest files | Yes |
| JPG | Photos, email, older apps | No (filled with white) |
| PNG | Logos, screenshots, sharp text | Yes |
Example
A 1600 × 1200 photo saved at 295 KB as a high-quality JPG came out at about 44 KB as a compressed JPG in our tests, an 85% reduction with the same dimensions. Results depend on the picture: busy, detailed photos compress less than plain backgrounds.
Tips and common mistakes
- Resize first if the image is huge. A 6000-pixel photo for a 1200-pixel website slot is wasted bytes. Use the image resizer, then compress.
- Don’t compress the same JPG again and again. Each lossy save removes more detail.
- Keep your original. Download the compressed copy under a new name so you can go back.
- Converting PNG to JPG fills transparent areas with white. Use WebP or PNG if you need a transparent background.
Privacy
Compression happens in your browser using the canvas API. The tool does not upload your image to a LIVETOOLSLAB server. Very large files depend on your device’s memory; if a browser tab struggles, try a smaller image or a desktop browser.
Target sizes for common uses
Upload forms often set limits such as 100 KB, 200 KB or 2 MB. If one pass isn’t enough, reduce the dimensions with the image resizer first. Pixel count drives file size more than anything else.
Frequently asked questions
JPG and WebP compression removes some detail, but at the levels this tool uses the change is usually hard to see at normal viewing size. PNG output is lossless.
PNG is already a lossless format, so re-encoding it rarely saves much. Choose WebP or JPG output for photos, or keep the original if it is a logo or screenshot.
No. The compressor keeps the original width and height. Use the image resizer if you need smaller dimensions.
Each image can be up to 50 MB. Very large images may be slow on phones because all the work happens on your device.
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