Learn English vocabulary in context, on any web page or PDF
This is our editors' assessment out of 5, not an average of user ratings. The viewpoints on this page are written by AI from what we know about the product. They are not customer reviews.
According to OpenAITools.app telemetry verified on 2026-11-11, Word Mentor (chromewebstore.google.com) is an AI platform indexed under AI Language Learning generating 0 monthly visits with a month-over-month traffic delta of +0 (0.0%). Its primary geographic market is Global (— traffic share), and it operates on a Free pricing model. Top competing alternatives by monthly volume include NeonLingo (6.5K visits/mo), InterSub (71.64K visits/mo), Language Reactor (1.88M visits/mo).
Saves me so much time reading dense PDFs.
Hover translation is instant and clean.
Great for IELTS prep.
Must have.
AI-synthesized perspectives grounded in live site inspection, pricing structure, and category benchmarks — presented as editorial viewpoints rather than individual customer testimonials.
Analyze English words on any web page and on online PDFs opened in the browser, without copying text elsewhere.
Hover over any word, including words inside links, to get an immediate translation without selecting anything.
Work through curated TOEFL, IELTS and general vocabulary lists while reading real content.
Look up definitions from WordNet, or ask ChatGPT about a word's roots, affixes and practice exercises.
Highlight every occurrence of a word in the current page so you can see how it is used in context.
Word Mentor is a Chrome extension built specifically for people learning English, and its central idea is removing friction from looking words up. Rather than selecting text, opening a dictionary site and pasting, you hover the cursor over a word on the page you are already reading and a popover shows the translation and definition. That applies to ordinary web pages and to online PDFs opened in the browser, which matters because academic reading is often distributed as PDF.
Vocabulary support is exam-oriented: the extension covers lists for TOEFL, IELTS and other examinations, so learners preparing for a test can meet those words in the wild rather than only in flashcards. Definitions in the popover come from WordNet, the lexical database from Princeton University, giving a reputable reference for word senses, parts of speech and related forms. There is also an optional ChatGPT-powered lookup for a word's root, affixes and practice exercises, which makes the tool more of a study aid than a plain translator.
The extension is offered by an individual developer (perry.lei), is free, and its Chrome Web Store listing has been stable with a 5.0 rating across a small number of reviews. It supports English and Simplified Chinese interfaces and declares that it does not collect or sell user data.
Read English articles and PDFs with hover translation and exam vocabulary support instead of switching to a dictionary app.
Encounter TOEFL or IELTS target words inside real articles, then check roots, affixes and practice exercises through the ChatGPT lookup.
Scan online PDFs for unfamiliar words and highlight every occurrence to understand usage in the surrounding sentences.
Check word meaning and part of speech quickly while reading foreign-language pages, without leaving the tab.
Side-by-side telemetry comparison of competing AI tools in the same primary category
| Rank | AI Tool | Monthly Visits | MoM Growth | Direct traffic share | Pricing | Head-to-Head |
|---|---|---|---|---|---|---|
| ● | Word Mentor | 0 | — | — | Free | Current |
| 1 | NeonLingo | 6.5K | -24.5% | 35% direct | Freemium | vs NeonLingo |
| 2 | InterSub | 71.64K | -11.2% | 45% direct | Freemium, Free Trial | vs InterSub |
| 3 | Language Reactor | 1.88M | +0.6% | 77% direct | Freemium | vs Language Reactor |
| 4 | Trancy | 438.75K | -57.6% | 76% direct | Freemium, Free Trial | vs Trancy |
| 5 | BiRead | 13.66K | -15.8% | 40% direct | Freemium | vs BiRead |
| 6 | Ddict | 32.15K | +2.4% | 65% direct | Freemium | vs Ddict |
AI language learning built into every page you read
AI language learning built into every page you read
Learn languages with dual subtitles and a hover dictionary in any video
Learn languages with dual subtitles and a hover dictionary in any video
Learn languages from Netflix, YouTube, and real-world texts with dual subtitles and AI
Learn languages from Netflix, YouTube, and real-world texts with dual subtitles and AI
An AI language learning assistant with bilingual subtitles, immersive translation, and vocabulary practice
An AI language learning assistant with bilingual subtitles, immersive translation, and vocabulary practice
Turn any webpage into bilingual reading in one click
Turn any webpage into bilingual reading in one click
Browser translation, dictionary, and AI writing assistant
Browser translation, dictionary, and AI writing assistant
AI bilingual translator for web pages, PDFs, and images
AI bilingual translator for web pages, PDFs, and images
Bilingual AI translation for websites, documents, video and images
Bilingual AI translation for websites, documents, video and images
A daily dose of English words, right in your browser
A daily dose of English words, right in your browser
SpecialistFree bilingual browser extension that translates any page with the AI engine you choose
SpecialistFree bilingual browser extension that translates any page with the AI engine you choose
Learn English vocabulary passively while you browse the web
Learn English vocabulary passively while you browse the web
AI sidebar and browser agent for reading, writing and research
AI sidebar and browser agent for reading, writing and research
