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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7-day rating change
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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Great extension!! but there was a visual bug, when I do the PDF Reader and select a word, It doesn't highlight the word correctly, I mean just the shadow, but word wise it does read it fine. Nonetheless it deserve 5 stars.
I compared the results of google translate in Definer with official google translate, but they're not same. Why?
can you please please please please add a option all word should be saved so that i can review it at the end of the day bro when are you inserting the save word feature the word are search are not storing so how am i revise them at the end of the if you have any solultion then give me
A melhor estensão gratuita que utilizei até hoje. Obrigado aos desenvolvedores! :)
Love this so much👍
Perfect! I was looking for something exactly like this!! Came here from your reddit post :)
The best among others :-) !!!!!!!!!!!
I love this extension, it’s top-notch and the only one I’ll be using from now on. However, I’m only giving it 4 stars because having more customisation options is essential for me. I’d really love to be able to add more customised dictionaries, as this would greatly enhance my personal experience and language learning. Please, please, please add more customisation options (or create a feature where user can easily click to add customised dictionaries as per users' need)
Thank so much
Fantastic extension! I love the contextual search in mobile Chrome (just long tap any word). Never undestood why it is not available in desktop Chrome. I was looking for something like it and was happy to find this extension, which gets *very* close. (You may want to mention that in the description to help people find it). Great job! Only downside: I would like to donate, but don't have crypto currency. Please provide a Paypal account. One suggestion: Please make the popup close on Esc key. That key press is hardwired in my spine and it is always a downer when it doesn't work. Update June 2025: Thanks a ton for implementing the Esc key feature! And the new popup next to selected content is also very convenient. Keep up the great work. Again, I would love to donate if you tell me how without crypto currency.