Upload & Clean Signature

100% Client-Side Privacy

Upload a photo of your paper signature, remove the background, and create a transparent digital stamp.

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Upload photo of your signature

Snap a picture of your signature on white paper

Supported: PNG, JPG, JPEG, WEBP
No Server UploadsAll processing runs strictly in your browser memory
Instant & FreeNo signup, subscriptions, or watermarks
High-DPI QualityLossless and professional print grade output

How to Use Upload & Clean Signature

Follow these simple steps to process your files securely in seconds.

1

Upload Photo or Scan

Upload a picture of your signature written on white paper.

2

Adjust Contrast & Threshold

Move the threshold slider to eliminate paper texture and shadows while keeping ink strokes crisp.

3

Select Ink Color

Keep original ink or enhance it to crisp jet-black or legal blue ink.

4

Download Clean PNG

Save the transparent signature stamp for digital signing.

About Upload & Clean Signature

Convert Paper Signatures into Digital Assets

Taking a phone photo of a paper signature usually produces uneven lighting, yellow tints, and gray shadows. Our client-side image filter evaluates pixel luminosity and alpha-masks the paper while preserving fine pen pressure gradations.

Free & Unlimited usage
Zero server logging or storage
Full resolution & high-DPI output

Frequently Asked Questions (FAQ)

Write on unlined white paper with a dark pen or marker in a well-lit room without heavy shadows over the paper.