Image Compressor
Compress and resize JPEG or PNG images directly in your browser, with adjustable quality and no upload to a server.
Free to use, no sign-up, no limit on how many times you run it.More image tools
Overview
Large image files slow down websites and take up unnecessary storage. This tool resizes and compresses images right in your browser so you can shrink file size before uploading elsewhere.
- Adjustable quality and maximum width
- Live before/after size comparison
- No file ever leaves your device
How to use it
- 1Choose an image from your device
- 2Adjust the quality and max width sliders to taste
- 3Download the compressed result
Tips
- — For web use, 70–80% quality is usually visually indistinguishable from the original at a fraction of the file size
Frequently asked questions
Is my image uploaded anywhere?
No. The image is read and processed entirely in your browser using the Canvas API — it's never sent to a server.
What file format is the output?
The compressed result is saved as JPEG, which typically offers the best size reduction for photos. PNG input is supported as well, but the output is always a compressed JPEG.