Semantix
Multilingual Context-aware AI Powered Dictionary
As of June 2026, Semantix has 19 users and a 4.89/5 rating from 9 reviews in the Education category.
Usersup 280.0 percent+280.0%
19
19
Ratingdown 2.2 percent−2.2%
4.89
9 reviews
Reviewsup 350.0 percent+350.0%
9
Version
1.1.6
Manifest V3
90-day change · In the last 90 days this extension 4 version updates, changed permissions.
History
10 snapshotsTracking since Apr 16, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| Apr 16, 2026 | 5 | 5.00 | 2 | 1.1.2 |
| Apr 22, 2026 | 7 | 4.67 | 3 | 1.1.3 |
| Apr 27, 2026 | 8 | 4.75 | 4 | 1.1.3 |
| May 4, 2026 | 8 | 4.75 | 4 | 1.1.3 |
| May 10, 2026 | 17 | 4.86 | 7 | 1.1.3 |
| May 15, 2026 | 19 | 4.86 | 7 | 1.1.4 |
| May 21, 2026 | 20 | 4.88 | 8 | 1.1.5 |
| May 28, 2026 | 23 | 4.89 | 9 | 1.1.6 |
| Jun 4, 2026 | 18 | 4.89 | 9 | 1.1.6 |
| Jun 9, 2026 | 16 | 4.89 | 9 | 1.1.6 |
| Now | 19 | 4.89 | 9 | 1.1.6 |
Changelog
- May 21, 2026permissions
storage, webNavigation, contextMenus
storage, webNavigation, contextMenus, notifications
- May 15, 2026description
✨ Turn any webpage into a smart learning experience. This extension instantly shows context-aware meanings, synonyms, antonyms, word categories, and real usage examples for any selected word — all powered by advanced AI. Instead of generic dictionary definitions, it understands the context of the page you’re reading and gives explanations that actually make sense. Whether you're reading articles, research papers, documentation, blogs, or social media posts, this tool helps you understand faster, learn better, and read more confidently. 🔹 Key Features 👉 Context-aware word meanings (based on page content) 👉 AI-powered explanations instead of generic definitions 👉 Synonyms and antonyms for vocabulary expansion 👉 Word category detection (noun, verb, adjective, etc.) 👉 Real usage examples 👉 One-click lookup — no tab switching 👉 Optional confirmation mode for intentional lookups 👉 Clean, fast, and lightweight 🔹 Why install this? 👉 Learn new words naturally while browsing 👉 Improve vocabulary without interrupting reading flow 👉 Perfect for students, researchers, developers, and professionals 👉 Saves time and boosts comprehension ⚙️ How it works Just double click any word on a webpage, and get an instant AI-powered explanation tailored to the context you’re reading ✨. Enable "Ask before explaining" mode in the extension popup for more intentional lookups ✨. 🚀 Upgrade your browsing into a smarter, more productive learning experience. New features added in Version 1.1.3 - **Word History**: Automatically saves recently looked up words (last 100) - **Favorites**: Bookmark words for later review with one click - **Export**: Download your history and favorites as JSON files for study purposes - **Expandable Details**: Click any saved word to view full definition details New features added in Version 1.1.4 **PDF local file support**
✨ Turn any webpage into a smart learning experience. For PDF feature: 1. Open Chrome 2. Search `chrome://extensions/` 3. Find Semantix and click **Details** 4. Scroll, Find and Enable **Allow access to file URLs** 5. After enabling it, Semantix will work on local PDFs and files. This extension instantly shows context-aware meanings, synonyms, antonyms, word categories, and real usage examples for any selected word — all powered by advanced AI. Instead of generic dictionary definitions, it understands the context of the page you’re reading and gives explanations that actually make sense. Whether you're reading articles, research papers, documentation, blogs, or social media posts, this tool helps you understand faster, learn better, and read more confidently. 🔹 Key Features 👉 Context-aware word meanings (based on page content) 👉 AI-powered explanations instead of generic definitions 👉 Synonyms and antonyms for vocabulary expansion 👉 Word category detection (noun, verb, adjective, etc.) 👉 Real usage examples 👉 One-click lookup — no tab switching 👉 Optional confirmation mode for intentional lookups 👉 Clean, fast, and lightweight 🔹 Why install this? 👉 Learn new words naturally while browsing 👉 Improve vocabulary without interrupting reading flow 👉 Perfect for students, researchers, developers, and professionals 👉 Saves time and boosts comprehension ⚙️ How it works Just double click any word on a webpage, and get an instant AI-powered explanation tailored to the context you’re reading ✨. Enable "Ask before explaining" mode in the extension popup for more intentional lookups ✨. 🚀 Upgrade your browsing into a smarter, more productive learning experience. New features added in Version 1.1.3 - **Word History**: Automatically saves recently looked up words (last 100) - **Favorites**: Bookmark words for later review with one click - **Export**: Download your history and favorites as JSON files for study purposes - **Expandable Details**: Click any saved word to view full definition details New features added in Version 1.1.4 **PDF local file support** # New features v-1.1.5 - **Cross-Device Sync**: History and favorites automatically sync across all devices when logged into Chrome - **Context Menu**: Right-click selected text to look up definitions - **Phrase Lookup**: Look up single words or phrases (up to 3 words)
- May 15, 2026permissions
storage, webNavigation
storage, webNavigation, contextMenus
- May 10, 2026description
✨ Turn any webpage into a smart learning experience. This extension instantly shows context-aware meanings, synonyms, antonyms, word categories, and real usage examples for any selected word — all powered by advanced AI. Instead of generic dictionary definitions, it understands the context of the page you’re reading and gives explanations that actually make sense. Whether you're reading articles, research papers, documentation, blogs, or social media posts, this tool helps you understand faster, learn better, and read more confidently. 🔹 Key Features 👉 Context-aware word meanings (based on page content) 👉 AI-powered explanations instead of generic definitions 👉 Synonyms and antonyms for vocabulary expansion 👉 Word category detection (noun, verb, adjective, etc.) 👉 Real usage examples 👉 One-click lookup — no tab switching 👉 Optional confirmation mode for intentional lookups 👉 Clean, fast, and lightweight 🔹 Why install this? 👉 Learn new words naturally while browsing 👉 Improve vocabulary without interrupting reading flow 👉 Perfect for students, researchers, developers, and professionals 👉 Saves time and boosts comprehension ⚙️ How it works Just double click any word on a webpage, and get an instant AI-powered explanation tailored to the context you’re reading ✨. Enable "Ask before explaining" mode in the extension popup for more intentional lookups ✨. 🚀 Upgrade your browsing into a smarter, more productive learning experience. New features added in Version 1.1.3 - **Word History**: Automatically saves recently looked up words (last 100) - **Favorites**: Bookmark words for later review with one click - **Export**: Download your history and favorites as JSON files for study purposes - **Expandable Details**: Click any saved word to view full definition details
✨ Turn any webpage into a smart learning experience. This extension instantly shows context-aware meanings, synonyms, antonyms, word categories, and real usage examples for any selected word — all powered by advanced AI. Instead of generic dictionary definitions, it understands the context of the page you’re reading and gives explanations that actually make sense. Whether you're reading articles, research papers, documentation, blogs, or social media posts, this tool helps you understand faster, learn better, and read more confidently. 🔹 Key Features 👉 Context-aware word meanings (based on page content) 👉 AI-powered explanations instead of generic definitions 👉 Synonyms and antonyms for vocabulary expansion 👉 Word category detection (noun, verb, adjective, etc.) 👉 Real usage examples 👉 One-click lookup — no tab switching 👉 Optional confirmation mode for intentional lookups 👉 Clean, fast, and lightweight 🔹 Why install this? 👉 Learn new words naturally while browsing 👉 Improve vocabulary without interrupting reading flow 👉 Perfect for students, researchers, developers, and professionals 👉 Saves time and boosts comprehension ⚙️ How it works Just double click any word on a webpage, and get an instant AI-powered explanation tailored to the context you’re reading ✨. Enable "Ask before explaining" mode in the extension popup for more intentional lookups ✨. 🚀 Upgrade your browsing into a smarter, more productive learning experience. New features added in Version 1.1.3 - **Word History**: Automatically saves recently looked up words (last 100) - **Favorites**: Bookmark words for later review with one click - **Export**: Download your history and favorites as JSON files for study purposes - **Expandable Details**: Click any saved word to view full definition details New features added in Version 1.1.4 **PDF local file support**
- May 10, 2026host_permissions
<all_urls>
<all_urls>, file:///*
- May 10, 2026permissions
storage
storage, webNavigation
- Apr 16, 2026description
✨ Turn any webpage into a smart learning experience. This extension instantly shows context-aware meanings, synonyms, antonyms, word categories, and real usage examples for any selected word — all powered by advanced AI. Instead of generic dictionary definitions, it understands the context of the page you’re reading and gives explanations that actually make sense. Whether you're reading articles, research papers, documentation, blogs, or social media posts, this tool helps you understand faster, learn better, and read more confidently. 🔹 Key Features 👉 Context-aware word meanings (based on page content) 👉 AI-powered explanations instead of generic definitions 👉 Synonyms and antonyms for vocabulary expansion 👉 Word category detection (noun, verb, adjective, etc.) 👉 Real usage examples 👉 One-click lookup — no tab switching 👉 Optional confirmation mode for intentional lookups 👉 Clean, fast, and lightweight 🔹 Why install this? 👉 Learn new words naturally while browsing 👉 Improve vocabulary without interrupting reading flow 👉 Perfect for students, researchers, developers, and professionals 👉 Saves time and boosts comprehension ⚙️ How it works Just double click any word on a webpage, and get an instant AI-powered explanation tailored to the context you’re reading ✨. Enable "Ask before explaining" mode in the extension popup for more intentional lookups ✨. 🚀 Upgrade your browsing into a smarter, more productive learning experience.
✨ Turn any webpage into a smart learning experience. This extension instantly shows context-aware meanings, synonyms, antonyms, word categories, and real usage examples for any selected word — all powered by advanced AI. Instead of generic dictionary definitions, it understands the context of the page you’re reading and gives explanations that actually make sense. Whether you're reading articles, research papers, documentation, blogs, or social media posts, this tool helps you understand faster, learn better, and read more confidently. 🔹 Key Features 👉 Context-aware word meanings (based on page content) 👉 AI-powered explanations instead of generic definitions 👉 Synonyms and antonyms for vocabulary expansion 👉 Word category detection (noun, verb, adjective, etc.) 👉 Real usage examples 👉 One-click lookup — no tab switching 👉 Optional confirmation mode for intentional lookups 👉 Clean, fast, and lightweight 🔹 Why install this? 👉 Learn new words naturally while browsing 👉 Improve vocabulary without interrupting reading flow 👉 Perfect for students, researchers, developers, and professionals 👉 Saves time and boosts comprehension ⚙️ How it works Just double click any word on a webpage, and get an instant AI-powered explanation tailored to the context you’re reading ✨. Enable "Ask before explaining" mode in the extension popup for more intentional lookups ✨. 🚀 Upgrade your browsing into a smarter, more productive learning experience. New features added in Version 1.1.3 - **Word History**: Automatically saves recently looked up words (last 100) - **Favorites**: Bookmark words for later review with one click - **Export**: Download your history and favorites as JSON files for study purposes - **Expandable Details**: Click any saved word to view full definition details
Permissions & access
- Permissions
- storagewebNavigationcontextMenusnotifications
- Host access
- <all_urls>, file:///*
Screenshots
About
✨ Turn any webpage into a smart learning experience. For PDF feature: 1. Open Chrome 2. Search `chrome://extensions/` 3. Find Semantix and click **Details** 4. Scroll, Find and Enable **Allow access to file URLs** 5. After enabling it, Semantix will work on local PDFs and files. This extension instantly shows context-aware meanings, synonyms, antonyms, word categories, and real usage examples for any selected word — all powered by advanced AI. Instead of generic dictionary definitions, it understands the context of the page you’re reading and gives explanations that actually make sense. Whether you're reading articles, research papers, documentation, blogs, or social media posts, this tool helps you understand faster, learn better, and read more confidently. 🔹 Key Features 👉 Context-aware word meanings (based on page content) 👉 AI-powered explanations instead of generic definitions 👉 Synonyms and antonyms for vocabulary expansion 👉 Word category detection (noun, verb, adjective, etc.) 👉 Real usage examples 👉 One-click lookup — no tab switching 👉 Optional confirmation mode for intentional lookups 👉 Clean, fast, and lightweight 🔹 Why install this? 👉 Learn new words naturally while browsing 👉 Improve vocabulary without interrupting reading flow 👉 Perfect for students, researchers, developers, and professionals 👉 Saves time and boosts comprehension ⚙️ How it works Just double click any word on a webpage, and get an instant AI-powered explanation tailored to the context you’re reading ✨. Enable "Ask before explaining" mode in the extension popup for more intentional lookups ✨. 🚀 Upgrade your browsing into a smarter, more productive learning experience. New features added in Version 1.1.3 - **Word History**: Automatically saves recently looked up words (last 100) - **Favorites**: Bookmark words for later review with one click - **Export**: Download your history and favorites as JSON files for study purposes - **Expandable Details**: Click any saved word to view full definition details New features added in Version 1.1.4 **PDF local file support** # New features v-1.1.5 - **Cross-Device Sync**: History and favorites automatically sync across all devices when logged into Chrome - **Context Menu**: Right-click selected text to look up definitions - **Phrase Lookup**: Look up single words or phrases (up to 3 words)
Technical
- Version
- 1.1.6
- Manifest
- V3
- Size
- 5.74MiB
- Min Chrome
- 88
- Languages
- 1
- Featured
- No
Metadata
- ID
- pkfmjfakbiiimffjmcdfnlmdiefgiohk
- Developer ID
- uda7f602e616e71f053edeb5dfa4601ea
- Developer Email
- [email protected]
- Created
- Mar 6, 2026
- Last Updated (Store)
- May 20, 2026
- Last Scraped
- Jun 9, 2026
- Website
- —
- Support URL
- —
Similar extensions
Alternatives to Semantix, ranked by description similarity.
Quick Dictionary
Double-click any word to get instant definitions - works on any website
13
★ 5.0
Lexiora
Lexiora — in-page vocabulary lookups.
112
★ 4.0
AI Term Highlighter
AI-powered extension that highlights difficult words and terminologies on web pages based on selected concepts
26
★ 5.0
WordPeek
Learn the meaning of any word in English.
4
Word Dictionary
A dictionary extension with search count tracking
2
Nimbus
Select any word, phrase, or name for instant definitions, translation, AI explanations, and in-browser tools for online learning.
10
Reading copilot - Contextual Vocabulary Learning
Learn vocabulary while reading the web with contextual explanations powered by AI.
11
★ 5.0
LexiVocab
Master new languages while browsing. Easily save, highlight, and translate vocabulary.
24
★ 5.0
Data sourced from the Chrome Web Store · last verified Jun 9, 2026.