What's Changed

• Fixed memory leaks (#977)
  • This version fixed a long-standing issue where memory would rise over time, eventually leading to a crash.
• Reduced runtime and memory usage for most users by updating default formats (#916).
• Fixed compatibility with Electron main process (#925)
• Fixed bug where user-provided parameters were overwritten by defaults (#975).

Breaking Changes

1. All outputs formats other than text are now disabled by default.
   • To re-enable the hocr output (for example), set the following: worker.recognize(image, {}, { hocr: true })
     • See here for a list of possible output formats.
2. The JavaScript object output format (blocks) was tweaked.
   • Only the array of blocks (blocks) is returned.
     • Previous versions would automatically generate lists of every unit of text (words, symbols, etc.).
       • If needed, these should now be generated by the user.
   • Only text-based blocks are reported.
     • Previous versions reported non-text blocks when detected by Tesseract (e.g. line segments).
   • The shape of some objects were changed.
     • See the type declarations for reference on properties.
     • The main properties--text and bbox--are unchanged.
3. Various functions and options marked as depreciated previously have been removed.
   1. This includes worker.initialize and worker.loadLanguage, along with several depreciated options from v2.

See #993 for additional discussion about this release.

New Contributors

• @IgorAufricht made their first contribution in https://github.com/naptha/tesseract.js/pull/971

Full Changelog: https://github.com/naptha/tesseract.js/compare/v5.1.1...v6.0.0