{"id":22508080,"url":"https://github.com/Automattic/harper","last_synced_at":"2025-08-03T13:30:42.730Z","repository":{"id":221453891,"uuid":"708266011","full_name":"Automattic/harper","owner":"Automattic","description":"The Grammar Checker for 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id=\"header\" align=\"center\"\u003e\n    \u003cimg src=\"logo.svg\" width=\"400px\" /\u003e\n    \u003ch1\u003eHarper\u003c/h1\u003e\n\u003c/div\u003e\n\n[![Harper Binaries](https://github.com/automattic/harper/actions/workflows/build_harper_binaries.yml/badge.svg)](https://github.com/automattic/harper/actions/workflows/build_harper_binaries.yml)\n[![Website](https://github.com/automattic/harper/actions/workflows/build_web.yml/badge.svg)](https://github.com/automattic/harper/actions/workflows/build_web.yml)\n[![Precommit](https://github.com/automattic/harper/actions/workflows/precommit.yml/badge.svg)](https://github.com/automattic/harper/actions/workflows/precommit.yml)\n[![Crates.io](https://img.shields.io/crates/v/harper-ls)](https://crates.io/crates/harper-ls)\n![NPM Version](https://img.shields.io/npm/v/harper.js)\n\nHarper is an English grammar checker designed to be _just right._\nI created it after years of dealing with the shortcomings of the competition.\n\nGrammarly was too expensive and too overbearing.\nIts suggestions lacked context, and were often just plain _wrong_.\nNot to mention: it's a privacy nightmare.\nEverything you write with Grammarly is sent to their servers.\nTheir privacy policy claims they don't sell the data, but that doesn't mean they don't use it to train large language models and god knows what else.\nNot only that, but the round-trip-time of the network request makes revising your work all the more tedious.\n\nLanguageTool is great, if you have gigabytes of RAM to spare and are willing to download the ~16GB n-gram dataset.\nBesides the memory requirements, I found LanguageTool too slow: it would take several seconds to lint even a moderate-size document.\n\nThat's why I created Harper: it is the grammar checker that fits my needs.\nNot only does it take milliseconds to lint a document, take less than 1/50th of LanguageTool's memory footprint,\nbut it is also completely private.\n\nHarper is even small enough to load via [WebAssembly.](https://writewithharper.com)\n\n## Language Support\n\nHarper currently only supports English, but the core is extensible to support other languages, so we welcome contributions that allow for other language support.\n\n## Performance Issues\n\nWe consider long lint times bugs.\nIf you encounter any significant performance issues, please create an issue on the topic.\n\nIf you find a fix to any performance issue, we would appreciate the contribution.\nJust please make sure to read [our contribution guidelines first.](https://github.com/automattic/harper/blob/master/CONTRIBUTING.md)\n\n## Links\n\n- [Frequently Asked Questions](https://writewithharper.com/docs/faq)\n- [Obsidian Documentation](https://writewithharper.com/docs/integrations/obsidian)\n- [`harper-ls` Documentation](https://writewithharper.com/docs/integrations/language-server)\n- Supported Editors' Documentation\n  - [Visual Studio Code](https://writewithharper.com/docs/integrations/visual-studio-code)\n  - [Neovim](https://writewithharper.com/docs/integrations/neovim)\n  - [Helix](https://writewithharper.com/docs/integrations/helix)\n  - [Emacs](https://writewithharper.com/docs/integrations/emacs)\n  - [Zed](https://writewithharper.com/docs/integrations/zed)\n- [`harper.js` Documentation](https://writewithharper.com/docs/harperjs/introduction)\n- [Official Discord Server](https://discord.com/invite/JBqcAaKrzQ)\n\n## Huge Thanks\n\nThis project would not be possible without the hard work from those who [contribute](https://writewithharper.com/docs/contributors/introduction).\n\n\u003ca href=\"https://github.com/automattic/harper/graphs/contributors\"\u003e\n  \u003cimg src=\"https://contrib.rocks/image?repo=automattic/harper\" /\u003e\n\u003c/a\u003e\n\nHarper's logo was designed by [Lukas Werner](https://lukaswerner.com/).\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FAutomattic%2Fharper","html_url":"https://awesome.ecosyste.ms/projects/github.com%2FAutomattic%2Fharper","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FAutomattic%2Fharper/lists"}