# Tesseract.js v6.0.0

- Product: Tesseract.js (https://whatsnew.fyi/product/tesseract-js)
- Vendor: naptha
- Date: 2025-01-07
- Version: v6.0.0
- Original notes: https://github.com/naptha/tesseract.js/releases/tag/v6.0.0
- Permalink: https://whatsnew.fyi/product/tesseract-js/releases/v6.0.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

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- **fixed** — Fixed memory leaks that caused memory to rise over time and eventually lead to crashes
- **changed** — Reduced runtime and memory usage for most users by updating default formats
- **fixed** — Fixed compatibility with Electron main process
- **fixed** — Fixed bug where user-provided parameters were overwritten by defaults
- **changed** — All output formats other than text are now disabled by default
- **changed** — The JavaScript object output format (blocks) now returns only the array of blocks instead of automatically generating lists of words and symbols
- **changed** — Only text-based blocks are reported, non-text blocks are no longer automatically reported
- **changed** — The shape of some block objects was changed, with main properties text and bbox remaining unchanged
- **removed** — Removed previously deprecated functions including worker.initialize and worker.loadLanguage

##### 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](https://github.com/naptha/tesseract.js/blob/c75a380171e2df87e045808cbc16359a6959f08f/src/index.d.ts#L75-L89) for a list of possible output formats.
1. 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](https://github.com/naptha/tesseract.js/blob/master/src/index.d.ts) for reference on properties.
      - The main properties--`text` and `bbox`--are unchanged.
1. 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