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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----7-day growthDeclining
-10K-20%30-day growthFlat
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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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Love the extension. Even though the custom source feature is currently experimental I see very little reason to use it yet since you can only configure one source. I don't care so much about formatting I just want to add multiple websites. Because of this, something less elaborate like this extension: https://chromewebstore.google.com/detail/lookup-in-popup/akaefbhdlppmfdecoakjogglbjgacdhm actually serves my needs much better at the moment, but if more custom searches were allowed this extension would be miles ahead.
This extension is awesome. You will never get tired of using it. One thing, how can I have unlimited sound requests for text. The google API has limited requests for the free tier. I would love to have unlimited requests.
This extension is fantastic! Modern, sleek and practical. Deserves way more stars and users.
This extension is smooth and amazing, it did what it offered, much better than any dictionary extension I've used! Well done!
Мега полезно для школьников!!
Додайте, будь ласка, deepl в якості перекладача
Полезнейшее расширение! Пользователям рекомендую добавить в источники Викисловарь: "https://{lang}.wiktionary.org/wiki/{str}". Не хватает преобразования слов при поиске в словарях в начальную форму.
This is exactly what I needed. I am quite grateful to be able to learn vocab whilst simply surfing web. Thank you.
Очень удобное расширение, то что я искал!
This extension is great i totally loved it. Btw I am getting an error "Looks like you've exceeded the usage limit of the API's free tier. If you're using VPN, try connecting to a different server. That should reset the limit". was wondering what is the free tier limit, and can we increase it or not? Kindly help