Convert Red Signature to Black
Signed in red ink by mistake? Government exam portals (SSC, UPSC, IBPS) and corporate onboarding systems will reject red signatures. Convert it to solid black ink here without re-signing.
Upload Red Signature
JPG, PNG, or WebP up to 10MB. Processed offline.
How to use this tool
Upload Red Signature
Select the photo or scan of your red ink signature. For best results, ensure the background is white unlined paper.
Adjust Darkness
Move the slider left or right until the red ink turns completely black, while keeping the paper background clean and white.
Download & Submit
Download your new black signature. If the file is too large, use a signature compressor to finalize it for upload.
Frequently Asked Questions
Why was my red ink signature rejected?
Red ink is historically reserved for grading or audits. Official documents and exam portals mandate black ink because scanners read black ink with the highest accuracy, and black ink makes authentication easier.
Will the converter work on maroon or pink ink?
Yes. For best results, upload a clear scan or phone photo with a light paper background. The converter turns the visible ink strokes into a black, high-contrast signature.
Does it work offline?
Yes. The conversion code executes strictly inside your browser, meaning it is 100% private and does not upload your signature files to a database.
Will this ruin the quality of my signature?
No. The tool preserves the shape of the signature strokes while increasing black contrast. If the scan is very blurry, clean or crop the signature first for better output.