Project Summary
The Tesseract OCR engine was one of the top 3 engines in the 1995 UNLV Accuracy test. Between 1995 and 2006 it had little work done on it, but it is probably one of the most accurate open source OCR engines available.
Tesseract will read a binary, grey or color image and output text, ALTO, PAGE XML, hOCR or PDF. It can read most common image formats.
Since 2020 the Internet Archive uses Tesseract to get text for its scanned documents.
In a Nutshell, tesseract-ocr...
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has a well established, mature codebase
maintained by a large development team
with stable Y-O-Y commits -
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took an estimated 1,201 years of effort (COCOMO model)
starting with its first commit in March, 2007
ending with its most recent commit about 2 months ago
Apache License 2.0
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Sub-License
Private Use
Use Patent Claims
Forbidden
Hold Liable
Use Trademarks
Required
Include Copyright
State Changes
Include License
Include Notice
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
Did You Know...
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30 Day SummaryJun 30 2025 — Jul 30 2025
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12 Month SummaryJul 30 2024 — Jul 30 2025
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Static Analysis ( Generated by Coverity Scan for tesseract-ocr )
Repository URL: https://github.com/tesseract-ocr/tesseract
Version: 5.5.1-13-g80142024
- 2025-07-06
- Last Analyzed
- 401,255
- Lines of Code Analyze
- 1.08
- Defect Density
Defects by status for current build
- 805
- Total defects
- 167
- Outstanding
- 614
- Fixed