Straighten a Scanned or Photographed Document — Free

For crooked or tilted scans and photos that need to be squared up into a neat, straight document.

A document that's tilted or crooked — whether from a hurried scan or an angled phone photo — looks unprofessional and is harder to read. Straightening it means detecting the page and rotating/warping it so the edges are square and the text runs horizontally. This tool finds the document's corners and applies a perspective transform that both deskews and flattens it, then enhances the result for a clean, paper-like finish. It works in your browser with on-device processing, so your scans stay private and nothing is uploaded — a clear benefit for personal or confidential documents. There's no watermark on the output and no sign-up. Use it to tidy up scans before emailing them, to square a photographed form before submitting it to a portal, or to clean up notes and receipts. The corrected document is straight, legible, and looks like it came from a proper scanner rather than a quick snapshot.