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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Best extension I have seen so far. Excellent for reading PDFs on web browsers.
Definer is good to use for me to search definition of words.
can you make definer remember translated words (history of words)
It was a perfect tool for me, but not able to use it anymore. Would you please provide an option to choose whether to use the "/responses" endpoint or not? I set OpenAI as the provider to use an OpenAI-like LLM service, but they do not support this endpoint.
that what im looking for thanks :D
Excellent on the fly translator and dictionary. Please add Takoboto for Japanese translation.
Coming from Google Dictionary, and it's worth it.
Awsome. Can you add DeepL?? Now I am using custom https://www.deepl.com/en/translator#en/{{lang}}/{{str}} + CSS #product-navigation-sidebar-container, [data-testid="product-navigation-sidebar-container"], [data-testid="product-navigation-sidebar"], header[role="banner"], footer[role="contentinfo"] { display: none !important; } .no-sticky-header, [class*="sticky top"], [class*="sticky-top"], [class*="fixed top"], [class*="header"] { display: none !important; } [class*="banner"], [class*="promo"], [class*="hero"], [data-testid*="promo"], [data-testid*="banner"], [data-testid*="jobs"] { display: none !important; } /* OneTrust */ #onetrust-banner-sdk, #onetrust-consent-sdk, .ot-sdk-container, .otFloatingButton, .ot-sdk-show-settings, /* Usercentrics */ #usercentrics-root, #uc-center-container, .uc-consent-root, /* CookieConsent */ .cc-window, .cc-banner, .cookie-consent, /* cookie/consent included */ [id*="cookie"], [class*="cookie"], [id*="consent"], [class*="consent"] { display: none !important; } .hidden.justify-center.gap-2.border-e.border-t.border-gray-100.bg-white.px-5.py-3.max-md\:flex, .mobile\:hidden.flex.items-center.justify-between { display: none !important; visibility: hidden !important; }
Wish I found it earlier! It's awesome
This exstension has improved my web experience a lot. But i just hope there wouldn't be annoying payment requirements... don't ruin this excellent thing!