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Research & data

We publish our test methods and raw findings so they can be cited and checked, including measured recognition error rates and replacement results on scans for each writing system, and the languages not yet supported.

OCR language support matrix for scans

We tested the recognition error rate and replacement results for 17 scripts on real scanned documents. Simplified Chinese and English are primary languages; 8 scripts including Thai, Traditional Chinese and Japanese are usable but need checking; 8 are still experimental; Lao scans are not usable.

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Try it first with your own file

After downloading, open a scan, enter a keyword and click "Find". Finding, replacing and saving need no network connection.

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