SelectON — selection popup. Copy & Search
Workflow & Planning
Customizable popup with actions on text selection
Users
7K
Rating
4.8
Reviews
122
7D Growth
0|0%
Cooling signalUnknownHigh-risk permissions
Definer - Word Translator, Ask AI, Dictionary Extension
Select text to translate, define, or ask AI. A word translator and dictionary extension for webpages, PDFs, and EPUBs.
Users40KCurrent public install base
Rating4.8Store average score
Reviews389Public review volume
Manifest versionV3Extension platform version
7-day growth-10KNet users gained this week
7-day growth rate-20%Relative weekly velocity
Preview
7 assetsDefiner - Word Translator, Ask AI, Dictionary Extension Media preview
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Start
4.78
Latest
4.78
7-day rating change
0.00
2026年7月14日2026年7月20日
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Version1.16.2
ManifestV3
Size7.12MiB
Languages55Deutsch / English / English (Australia) +52
Published
Store updated
Last crawled
DeutschEnglishEnglish (Australia)English (United Kingdom)English (United States)FilipinoIndonesiaKiswahiliMelayuNederlandsTiếng ViệtTürkçe
Overview
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Stop interrupting your reading flow to switch tabs just to define a word or translate a phrase. Definer is a powerful word finder and browser extension that brings the dictionary directly to you. Whether you are reading a complex article, studying a foreign language, or just need a quick synonym, this tool acts as your personal reading assistant.
Simply select any text on a webpage to instantly trigger the popup bubble. Unlike a basic Google Dictionary extension, Definer integrates multiple data sources, allowing you to use it as a paraphrase tool, an encyclopedia searcher, or a translation hub. It streamlines how you consume content online, making it the perfect solution for anyone wondering how to search for a phrase on a website without losing their place.
🚀 Key Features
✅ Instant definitions with zero clicks—just select the text to see meanings
✅ Built-in AI paraphraser to help rewrite sentences and understand context
✅ Support for EPUB files to help you read ebooks in the browser
Reviews
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Store average score4.8Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.7Average computed only from synced review bodies below
Reviews with text299Synced review bodies
Total ratings / reviews389Chrome Web Store public rating/review count
Store average score: 4.8. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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Very useful, not invasive and customizable. Exactly how it should be. Thank you for this.
This is a jaw dropping improvement in productivity for language learning. It is amazingly customizable which means whatever source you need can be added and displayed painlessly. I used to try to stitch multiple extensions together and I still wasn't able to display as much as Definer does all by itself in a compact usable interface. No more copying and pasting stuff to your dictionary of choice!
well done guys
Extremely helpful!
excellent in every way. one of the absolute best extensions i've ever used - they should be proud. only suggestion would be to fine tune the wikipedia plugin to be able to recognize disambiguations and alternate names to better find the relevant wikipedia page. e.g.) if I highlight "Barack Hussein Obama", I can get his page to pop up on the Wikipedia plug-in, but if I just highlight "Obama", it doesn't take me to his page nor does it ask me if I want to select his, Michelle's etc. (Wikipedia generates a page with all of the disambiguation options when you type something vague, i don't know if you could connect and display it for selection somehow.) THANK YOU!
Apenas la eh usado un poco pero hasta ahora se ve bastante prometedor
This is very helpful with great design! It will be even better if the learning curve of adding custom sources is lower. I still couldn't add cambridge dictionary source into it: tried multiple variations and still doesn't work properly. Such as "https://dictionary.cambridge.org/dictionary/english-chinese-simplified//definer/iframe?text={str}&lang={lang}"
i started to read a book and there are some words on every page that i don't know the exact meaning now thanks to this extension i can just know the meaning of that word just by double clicking instead of searching on a next chrome tab which result in lose focus while reading a book
Massive appreciation and huge respect to you. Thank you very much! I won't forget and will be forever indept.
I am only 5 Minutes on this App but it works fantastically! I can't be more happy with it, OP i'm very thankful for this extension. Works like japanese railway