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Preview of Perev

Perev by Santiago García

Instant Russian word lookup on hover. Transliteration, stress marks, English glosses, conjugation tables and more.

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Available on Firefox for Android™Available on Firefox for Android™
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You can instantly check a word's definition, instant lookup links, word frequency classification, Russian level classification, accent and word type.Conjugation tables for verbs, with their respective past and present/future forms, imperative, and derivatives.Declension tables for substantives.
About this extension
Perev is a hover dictionary for reading Russian on the web. Point your mouse at any Russian word to get an instant popup with the word's stressed form, transliteration (BGN/PCGN), part of speech, English translation, frequency rank, and CEFR level (A1–C2).

Features:
-Conjugation and declension tables in a dedicated tab (verbs show present/past side by side)
-Aspect pair links for verbs (perfective ↔ imperfective) — Click the copy icon to copy the word to clipboard
-Text-to-speech pronunciation
-Alt+P keyboard shortcut to toggle hover on/off
-Per-site disable via the toolbar popup
-Light and dark themes

Dictionary data is sourced from OpenRussian (CC BY-SA 4.0), covering 100,000+ word forms with grammar annotations. No data is collected or transmitted: everything runs locally in your browser.
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Permissions and data

Required permissions:

  • Access browser tabs
  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
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Version
0.9.0
Size
10.53 MB
Last updated
9 days ago (Apr 29, 2026)
Related Categories
  • Search Tools
  • Language Support
  • Social & Communication
License
MIT License
Version History
  • See all versions
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