Image Compressor
Reduce JPG and WebP file size while comparing image quality.
Select an image or drop it here
JPG, PNG, WebP · Your file is not uploaded
How to use it
Three simple steps
- 1Choose an imageSelect the file you want to process.
- 2Adjust optionsEnter the settings you need.
- 3Save the resultReview and download the new file.
Calculation guide
Image size depends on pixels, format and quality together
Dropping quality too aggressively can damage faces, text and high-contrast edges. A safer workflow is to confirm required dimensions, remove unnecessary resolution and then adjust JPG or WebP quality gradually.
Formula usedFile size ≈ pixel count × colour information × compression efficiency
Image content affects compression, so identical settings can produce different file sizes.
Recommended steps
- Check the destination’s pixel, format and file-size requirements.
- Keep the original and resize first if its resolution is unnecessarily large.
- Lower quality gradually while comparing the preview and output size.
How to interpret the result
- WebP can be smaller than JPG but the destination must support it.
- PNG photographs are often larger when transparency is unnecessary.
- UCALX processes the selected image in the browser without uploading it to the server.
FAQ
Frequently asked questions
What quality percentage should I use?
It varies by image. Start around 80–90% and lower it gradually while inspecting faces, text and edges.
Does compression change pixel dimensions?
Changing quality alone keeps width and height. Use the resizer to change pixels.
Is the original overwritten?
No. A new file is generated for download.
Useful together