Free image compressor
Compress JPG, PNG, and WebP images privately in your browser. Adjust quality and dimensions, compare file sizes, and download the result without uploading your image.
- Format
- Free browser tool
- Updated
- Updated
Private by design
Compress an image in your browser
Got an image that is too large to upload or share? Make a lighter copy here without sending the original to a server.
No upload · No account · No stored files
Finished locally
Your compressed image
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- Original
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- Compressed
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- Dimensions
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- Output
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How to compress an image
- Choose or drop a JPG, PNG, or WebP image up to 25 MB.
- Select WebP for the smallest typical web file, or choose JPEG or PNG when the output format matters.
- Adjust quality and, if useful, set a maximum width. The tool never enlarges an image.
- Compress the image, compare the file sizes, and download the new copy.
Start at 82% quality for photographs and illustrations. If the result still looks sharp, reduce quality or dimensions a little more. Always keep the original file separately.
Choose the right output format
| Format | Best for | Important tradeoff |
|---|---|---|
| WebP | Most website photographs, graphics, and product images | Usually the smallest practical output and supports transparency |
| JPEG | Photographs that need very broad compatibility | Does not support transparency; transparent areas become white |
| PNG | Logos, screenshots, and graphics that must remain lossless | The result may not be smaller because PNG does not use the quality setting |
Privacy and limits
The compressor runs in your browser. Your source image is not uploaded to Bitfoo, stored on a server, or included in analytics. Closing or leaving the page releases the temporary browser copies.
Re-encoding through the browser removes embedded metadata such as camera details and location data from the downloaded image. Animated images, SVG files, HEIC files, and images over 25 MB or 50 megapixels are not supported in this version.
Common image compressor questions
Will compressing an image reduce its quality?
JPEG and WebP compression trade some detail for a smaller file. At moderate settings the difference is often difficult to notice at normal display sizes. Compare the preview and keep your original.
Why did my compressed image become larger?
A source image may already be highly optimized, and lossless PNG output can be larger than JPEG or WebP. Try WebP, lower the quality, or reduce the maximum width.
Does this tool upload or keep my image?
No. The browser reads, re-encodes, previews, and downloads the image locally. Bitfoo does not receive the image file.
What image size should I use on a website?
Use dimensions close to the largest size at which the image will actually be displayed. A 1920-pixel-wide source is often enough for a full-width desktop image, while content images commonly need less.
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