v0.7.0

What's Changed

• Major rework of PDF export implementation.
  • Writing to PDF is faster and uses less memory.
    • Documents that used to crash due to memory errors now run almost instantly.
  • For many inputs, output PDF file sizes are now much smaller.
• Fixed memory leaks within OCR module.
• Misc bug fixes.

Full Changelog: v0.6.1...v0.7.0

v0.6.1

What's Changed

• Fixed Node.js support on Windows (#9)
• Fixed platform-related installation issues (#27, #29)
• Increased use of workers in Node.js version, enabling much better performance using a single process.

Full Changelog: v0.5.1...v0.6.1

v0.5.1

What's Changed

• Fixed bug causing crashes when recognizing certain PDFs using Node.js (#26)
• Minor updates

Full Changelog: v0.5.0...v0.5.1

v0.5.0

What's Changed

• Added config argument to recognize, which allows for passing arguments to Tesseract.js (#22)
• Added support for parsing PDF text at various orientations (90/180/270 degrees).
• Minor improvements to OCR quality.
• Various improvements to imports of HOCR and native PDF text.
• Added saveAs utility function for saving files.
• Added opt.kerning option that can be used to enable or disable kerening.

Full Changelog: v0.4.1...v0.5.0

v0.4.1

What's Changed

• Implemented parallel processing by default for Node.js version
  • To restore the previous behavior (1 worker), set scribe.opt.workerN = 1 before calling any functions.
• Non-default behavior for extracting text from PDF files is now handled by setting the properties of scribe.opt.usePDFText.
• Added Nimbus Mono font (similar to Courier)
• Improvements to text extraction from PDF files.
• Improvements to text positioning.

Full Changelog: v0.3.1...v0.4.1

Note: This post combines changes for 0.4.0 and 0.4.1 since the former was only the most recent version for a few hours.

v0.3.1

What's Changed

• Fixed memory leaks

Full Changelog: v0.3.0...v0.3.1

v0.3.0

What's Changed

• Improvements to parsing existing text from PDF files
• Various improvements to OCR text and bounding box quality
• Fixed memory leak
• Various minor changes

Full Changelog: v0.2.8...v0.3.0

v0.2.8

• Improved performance of "Quality" recognition mode.
  • Many documents should run up to 10-15% faster in quality mode.
• Updated Scribe Tesseract build to improve recognition accuracy.
  • Accuracy for data tables and other complex layouts has been noticeably improved.
    • See benchmark repo for examples and accuracy metrics.
• Improved image pre-processing.
• Updated Vanilla Tesseract build to support debugging features and image upscaling.
• Other minor changes

Full Changelog: v0.2.7...v0.2.8

v0.2.7

• Fixed bug preventing existing text in some PDFs from being detected (025456a)
• Increased resolution at which PDFs are rendered (0dd8801)
• Added calcSuppFontInfo option that calculates font metrics for the fonts in text-native PDFs (4b2b43e)
  • This is useful for niche applications that require highly-accurate visual coordinates from text-native PDFs.
• Various other minor updates

Full Changelog: v0.2.6...v0.2.7

v0.2.6

• Restored compatibility with Webpack
  Full Changelog: v0.2.5...v0.2.6