Thumbmark Maker
Remove a light background from a thumbprint photo. Your files stay on your device.
Thumbmark Maker
Remove a light background from a thumbprint photo.
Your documents are processed on this device. Files are not uploaded. Maximum 100 MB per file.
Drop files or a folder here
Supported formats: .png, .jpg, .jpeg, .webp.
Refine your thumbprint
Move the slider or enter a threshold to remove the light background. Higher values keep more ink detail.
0 removes all pixels; 255 keeps almost all detail. The checkerboard shows transparent areas in your PNG.
Choose a thumbprint photo to see the live preview.
Dark ink on a light, evenly lit background gives the clearest result.
- A threshold mask works best with dark ink on white paper. Check the result before using it.
How to use Thumbmark Maker
- Choose your files or drop them into the upload area.
- Move the threshold slider or enter a value, then check the transparent live preview.
- Run the tool and check the downloaded result before sharing.
Files are processed in your browser. Engines, fonts and OCR or speech models may need to download first. Processing speed and file limits depend on your device.