Compress Signature to 50KB.
Free and private — reduce your signature photo to 50KB in your browser. No sign-up, no upload.
Drop your photo here
or tap anywhere to choose a file
50KB for signatures
A 50KB signature limit gives you more flexibility than the stricter 20KB requirement. At 50KB, a well-photographed signature will look crisp and sharp — the ink is clearly defined against the white background, and there are no visible compression artefacts.
This limit is common across banking KYC (Know Your Customer) portals, financial services onboarding forms, and corporate HR systems. Always verify the current requirement directly from the official portal instructions before submitting.
Privacy
ToolKB compresses your signature entirely within your browser tab. No file is ever transmitted to a server. This makes it safe to use with sensitive documents such as financial and legal signatures.