How to compress an image
Choose an image, drag it here, or press Ctrl+V to paste a copied one. Pick the output format (keep original, JPEG or WebP), set the quality (40–95, default 80), and press Compress image. The new size is measured from the real file, with how much smaller or larger it is. Then download it.
JPEG, PNG or WebP?
JPEG and WebP suit photos because they shrink a lot while still looking good. WebP is often smaller than JPEG and keeps transparent backgrounds. PNG is lossless, so saving a PNG again usually doesn't make it smaller; for a smaller file that keeps transparency, try WebP.
Quality and file size
Lower quality makes smaller files but can lose detail; 75–85 usually works well for websites and chat. If an image is already compressed, the new file may not be smaller. The tool tells you honestly, and you can keep using the original.
Dimensions, transparency and metadata
Width and height always stay the same; to make an image smaller in pixels, use the Image Resizer. Transparent areas become white in JPEG, with a warning first. The new file has no metadata such as camera details or GPS location, and may lose its color profile. Your original file is not changed.
Privacy and limits
Images are compressed in your browser. They are not uploaded and not saved. JPEG, PNG and WebP up to 30 MB and 40 megapixels are supported; HEIC, GIF, SVG and animated images are not.
Frequently asked questions
Why is the new file bigger?
The original may already be compressed, or be a PNG. Lower the quality or choose WebP.
Can I compress several images at once?
Not yet. One image is compressed at a time.