wordharvest

Privacy Policy — WordHarvest

Last updated: October 18, 2026 (v1.1)

WordHarvest is a Chrome extension for learning vocabulary while you read. This policy explains what data the extension handles and where that data goes.

Summary

• Your saved words, sentences and review history are stored only in your browser.
• When a word has to be translated online, only the text being translated is sent to the translation service.
• There are no accounts, analytics, ads or tracking. Nothing is sold or shared.

Data stored on your device

When you save a word, the extension stores these items in your browser’s extension storage (chrome.storage.local):

• the word, its translation and the detected language
• the sentence the word appeared in, and the translation of that sentence
• the title and address (URL) of the page where you saved it
• notes you add, and each word’s review schedule (due dates, intervals)
• your learning progress: XP, daily XP history, streak, lessons completed and achievements
• your settings (target language, auto-save, daily goal, sound and listening options, translation provider and, if you enter one, a MyMemory e-mail address)

This data never leaves your device unless you export it yourself. The extension has no servers. Uninstalling the extension, or using Delete all cards on the Import & export page, removes it.

Data sent to translation services

1. Chrome’s built-in translator (default). When it is available, translation and language detection run on your device through Chrome’s built-in Translator and Language Detector APIs. The extension sends nothing over the network for these. Chrome may download language models from Google the first time a language pair is used.

2. MyMemory (optional fallback). If on-device translation is not available for a language pair, or you choose “Online only” in the settings, the extension sends these items to the MyMemory translation API (api.mymemory.translated.net, operated by Translated S.r.l.):

   • the word you double-clicked and, when you save it, the sentence around it
   • the source and target language codes
   • your e-mail address, only if you entered one in the settings to get a higher free quota

   The extension does not send the page URL, the page title, other page content, or your saved cards. MyMemory’s own privacy policy applies to these requests: https://mymemory.translated.net/doc/privacy.php. To keep everything on your device, choose On-device only in the settings.

Extra example sentences (Tatoeba)

To give you more practice than the one sentence you saved, WordHarvest can fetch a few short example sentences for the words you are practising from Tatoeba (api.tatoeba.org), a free, open collection of sentences and translations. When this is on, the extension sends Tatoeba only the word being practised and the two language codes (for example “aprovechar”, Spanish → English). It does not send the page, the sentence you saved, or anything else. Fetched sentences are stored with the word on your device. You can turn this off in the settings (“More example sentences from Tatoeba”).

Pronunciation (listening exercises)

Lessons can read words aloud using your browser’s built-in speech voices. WordHarvest prefers voices that run on your device. If your system only has an online voice for a language (for example Chrome’s “Google” voices), Chrome sends the word to be spoken to Google to produce the audio. You can turn listening off in the settings.

What the extension does not do

• It does not collect analytics, telemetry or personal information.
• It does not read or transmit page content, except the selected word and its sentence when you double-click a word, and the word being practised when extra sentences are on, as described above.
• It does not sell, rent, or share your data with third parties, and it does not use your data for advertising or creditworthiness.
• It does not use or transfer your data for any purpose unrelated to its single purpose: translating words and helping you learn them.

Changes

If this policy changes, the new version will be published at this address, with a new “Last updated” date.

Contact

Questions or requests: open an issue at https://github.com/talipturkmen/wordharvest/issues.

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