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%
Stable 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.
Users50KCurrent public install base
Rating4.8Store average score
Reviews389Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%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12日2026年7月18日
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1-day growthFlat
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+10K+25%Technical snapshot
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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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It does work, but unfortunately it doesn't in pdf and epub tabs
Fantastic! Exactly what I wanted. Awesome tool with everything I ever needed. All the hassle of finding meaning of words on my screen randomly anywhere, just gone. Thanks to whoever solved this problem, you are a genius. Lots of love to you!!
smooth and amazing
I just started using Definer, and I’m genuinely impressed. It’s such a handy tool — you can translate, search, and access so many features with just a single click. The interface is smooth and intuitive, and it makes looking up information or meanings incredibly fast. Didn’t expect it to be this good, but it’s quickly becoming one of my favorite tools!
i have been using this for more than a year now and i really appreciate how useful it is and the user interface is so beautiful.
A melhor que encontrei até agora para os estudos
Прям палочка выручалочка какая-то, и определения умеет давать и текст переводить без указания языка, много времени экономит
Great language extension! I'm learning a new language right now, and it's really helping me. It's really working well. Thank you!
Very satisfied with it! I use it for my own personal dictionaries, for dictionaries that have no pop-up extension apps, by only using Google Spreadsheets as the source file! Now all I have to do to translate obscure words is double click a word, and it'll translate for me. Definitely recommend it!
This is fantastic! I added a thesaurus to one of the custom sources, and it's working so well. Perfect for me and my kiddos to learn new words and expand our vocabulary at a click of a button. Thank you!