How to use Compress Image
- Drop your files into the box above, or click it to choose them.
- Adjust the options if you need to. Processing starts right away.
- Download each file, or download everything at once as a ZIP.
Tips to compress pictures to the smallest size
The compressor re-encodes your image at the quality you choose, removing detail the eye can barely see. For photos, savings of 50–80% are common with no visible change.
Tips for the smallest files
For PNG screenshots and graphics, keep “Same as original”: we reduce the number of colours, which often saves 50–80% while keeping transparency. For photos, choose WebP or JPG as the output format for the biggest savings. If a compressed file would end up bigger than the original, we keep your original.
Private by design
Every conversion happens inside your browser using your own device. Files are never uploaded to a server, so they cannot be seen, stored or shared by anyone.
Frequently asked questions
What quality setting should I use?
Start with Balanced. Choose Small file for the smallest size, or High quality if you notice any loss of detail – or set any value with the slider. Use Compare to check the result before you download.
Can I compress PNG files?
Yes. PNG files are compressed by reducing the number of colours, the same technique used by popular PNG optimisers. Screenshots and graphics often get 50–80% smaller and keep their transparency. Photos saved as PNG shrink less, so for them choose WebP or JPG as the output format.
Does compressing change the image size in pixels?
No. Width and height stay the same. To make images smaller in pixels, use the Resize Image tool.
How to compress photo size – is this a free photo compressor?
Yes. This photo compressor is free: add your files, choose a preset and download. It works as an online image compressor, image size compressor and photo size compressor for JPG, PNG and WebP – an online photo compressor and pic compressor in one. Use it as an image compressor JPG tool, or to compress PNG image and compress JPG image files. Wondering how to compress image size? Pick Small file. Compress image online free with no upload – a true photo compressor online free. You can also compress picture files straight from your phone.