MySemaCode
Repair damaged & unreadable QR / Data-Matrix codes — free, i
Semacode recovers QR and Data-Matrix codes that a normal scanner rejects — smudged, torn, faded, scratched or blurry. Upload a photo and it runs client-side image recovery and returns the decoded content. Free, no signup, runs entirely in your browser. Heavily damaged codes can be sent in for a manual deep-repair.
Features
Recovers damaged & unreadable QR and Data-Matrix codes — smudged, torn, faded, scratched, low-contrast or slightly blurry
Works from a photo or live camera — no clean scan needed
100% client-side: the image never leaves your browser — no upload, no signup, no tracking
Multi-step recovery engine: contrast/threshold normalization, denoise, deskew, quiet-zone reconstruction, multi-scale decoding
Instant content + safety check — see the decoded link or text before you open it
Manual deep-repair for heavy cases — submit codes too damaged for the automatic pass
Bonus: also scans clean codes and creates new QR codes (with logo)
Free, no account, works on mobile and desktop
Use Cases
A printed QR on a menu, flyer, ticket or parcel got creased, smudged or torn and won't scan
Faded or weather-worn outdoor codes (signs, stickers, posters)
A blurry photo or screenshot of a code you can't re-scan
Scratched or worn industrial Data-Matrix codes on parts and labels (logistics, manufacturing, automotive)
Marketers/event organizers rescuing a mis-printed campaign code without a reprint
Anyone who just needs to know "what's behind this broken code" — fast, without installing an app
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