Change Image Opacity Online

Change image opacity in the browser with percent control, transparent PNG/WEBP output, JPG background and batch processing.

Need help with the calculation?
Files are not sent to a server. Processing runs in your browser, and the queue handles one file at a time so the device stays responsive.
Drop JPG/PNG/WEBP/AVIF files here or tap to choose several files
No files selected.

Choose PNG or WEBP for a transparent result. JPG is flattened onto the selected background.

Output format
In queue0
Done0
Size saving-
Add JPG/PNG/WEBP/AVIF files.
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How to use it

Add images and set the opacity. To keep transparency, choose PNG or WEBP; if you need JPG, transparent areas are flattened onto the chosen background.

Recommended settings

50-70% works for overlays and watermarks; 20-40% works for light background images. Check the first result before processing the full queue.

Privacy

Your files are not uploaded to a server. The editor runs in your browser with local libraries from this site.

Limits

Large images can take longer on phones. If the browser slows down, process fewer files at once or choose a smaller output format.