Adjust Image Opacity
Make an image partially transparent and download a PNG with real alpha.
Drop your image here
Drag and drop, or choose a file below
JPG · PNG · WEBP
Up to 250 MB · One image at a time
Each image: up to 16 megapixels and 8192 px per side
Multiplies existing alpha by the selected percentage. A transparent pixel cannot become opaque.
Exports a full-resolution PNG with transparency. PNG files can be larger than the original.
Original
Choose an image or try the sample to see your preview here.
100% local processing
How to use
- 01
Choose an image or try the local sample.
- 02
Choose the remaining opacity from 0% to 100%.
- 03
Process, inspect the preview and download PNG.
Details and tips
How it works
Every original alpha value is multiplied by your selected percentage. RGB values are kept during processing; the PNG retains the transparency instead of flattening it onto a background.
Made for everyday images
Prepare watermarks, overlays and translucent design layers.
Frequently asked questions
Are images uploaded?
No. Processing and export happen on your device. Images are not saved to an account.
What are the limits?
Input supports JPG, PNG and WebP, up to 250 MB, 8192 px per side and 16 million pixels. Expanded output must also fit the pixel limits. Animated input is processed as a still frame.