Image Compressor
Reduce JPG, PNG and WebP file sizes while keeping good image quality.
Runs in your browser using Canvas 2D + toBlob — nothing is uploaded
How to use it
- Drop one or more images, or click to choose them.
- Set the quality. Lower means a smaller file; around 70–80% is usually indistinguishable from the original.
- Optionally cap the width so very large photos shrink further.
- Press Compress, then download the results.
Questions
Does compressing reduce image quality?
JPG and WebP compression is lossy, so some detail is discarded. At 75–85% quality most photographs look identical at normal viewing size while the file is far smaller. PNG has no quality setting — it is re-encoded, and savings come mainly from capping the width.
Why did my PNG get bigger?
PNG is lossless, so a photograph stored as PNG cannot shrink much and re-encoding can add a little. For photographs, convert to JPG or WebP instead — both are dramatically smaller.
Is there a file size limit?
Only what your device can hold in memory. Very large images (above roughly 50 megapixels) may fail on a phone.