Compress PNG files by reducing them to at most 256 colors while keeping transparency. Screenshots, icons and charts often shrink by half or more with no visible change; photos saved as PNG are better converted to JPG or WebP.
How to use
- Pick a tool at the top: Resize, Compress, Crop, Rotate, Convert or EXIF.
- Drop images on the card, tap to choose them, or paste with Ctrl+V. You can add many at once.
- Adjust the options. Tap an image in the list to preview it, crop it or see its metadata.
- Press the button and download the result: one file, or a ZIP when there are several. Compress runs automatically.
- Images are processed in your browser and never uploaded.
- Photos are turned upright using their EXIF orientation before editing.
- Compress keeps the original when re-encoding would make it bigger. PNG compression reduces colors (up to 256) and keeps transparency.
- Removing metadata from JPEG, PNG and WebP is lossless: only the metadata is cut out, pixels stay identical. The orientation tag is kept so photos stay upright.
- AVIF appears as a format when your browser can encode it. HEIC photos open only in browsers that support them (such as Safari).
How the compression works
JPG and WebP are recompressed at the quality you choose; around 75 keeps photos looking clean while often cutting the size by half or more, especially for camera photos saved at high quality. PNG stays lossless in format but is reduced to at most 256 colors with transparency kept, which works very well for screenshots, icons and flat graphics. If a re-encoded file would come out larger than the original, the original is kept.
Getting under a size limit
Pixel dimensions matter more than quality. A 12-megapixel photo (4000 × 3000) still weighs a lot at low quality, while the same photo scaled to 1600 px on the long side is usually a few hundred KB. Use the maximum size option for that.
Compressing the same JPG again and again adds artifacts each time, so always start from the original file.
Checking the result
The before and after view lets you look at faces, text and gradients up close. Banding in skies and blocky edges around text are the first signs that the quality is too low. Your images are processed locally and never uploaded.
Frequently asked questions
How can I reduce a photo to under 1 MB or 200 KB?
Set a maximum size such as 1600 px, then lower the quality until the new size shown for the file is under the limit. Reducing pixel dimensions has the biggest effect.
What quality should I choose for JPG?
Between 70 and 85 suits most photos on screens. Below about 60, artifacts start to show around edges and in smooth areas such as skies.
Does PNG compression lose quality?
It reduces the number of colors to at most 256, which is invisible for screenshots and graphics but can cause banding in photos. For photos, JPG or WebP is usually the better choice.
Is transparency kept?
Yes for PNG and WebP. JPG has no transparency, so compressing to JPG fills transparent areas with white.
Why did a file not get smaller?
Some files are already well compressed. When the new version would be the same size or larger, the tool keeps the original and marks it as already optimized.
Are my photos uploaded?
No. Compression runs in your browser on your own device, so the images never reach a server.