About SigCleaner

SigCleaner is an online tool for removing the background from photos of seals, stamps, and handwritten signatures. Make your image transparent in seconds — no registration or software installation required.

Why use SigCleaner

Every day, thousands of accountants, clerks, lawyers, and HR professionals face the same challenge: inserting a stamp or signature into an electronic document when the photo has a white background, overlapping text, or form lines. Removing the background manually is time-consuming and requires design skills, while standard background removal tools struggle with complex stamps and signatures.

SigCleaner solves this problem automatically. Upload a scan or photo, and the service will remove the background from the stamp, erase unwanted text and artifacts, and return a clean PNG with a transparent background, ready to be inserted into any document.

Benefits

No subscription No watermarks. Process and preview without registration; download using processing packages.
Fast — in seconds Removing the background from a stamp is faster than opening a photo editor.
Specialized for stamps Not a generic editor, but a purpose-built solution for this specific task.
Removes text and lines SigCleaner cleans up form elements around a signature or stamp.
Works on mobile Take a photo of a stamp directly in your browser — no app required.
Developer API REST API with Bearer token authentication for seamless integration into any system.

Who is it for

  • Accountants who need to insert a stamp into an invoice or statement
  • HR professionals — for orders, employment contracts, and performance reviews
  • Developers — via REST API for batch processing
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