SelectON — selection popup. Copy & Search
Customizable popup with actions on text selection
Select text to translate, define, or ask AI. A word translator and dictionary extension for webpages, PDFs, and EPUBs.
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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
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Customizable popup with actions on text selection
Looks up the selected text on Oxford Learner's Dictionaries
Translate text while browsing. Auto-translate, audio, favorites, spaced repetition. PDF support. Language learning tool.
Click on a word to get its definition instantly, now with audio pronunciation and Google Search.
A customizable dictionary extension that supports double-click lookups in 20+ languages, 1000+ dictionaries, and Anki integration.
Find precise English-to-English definitions effortlessly and for free with this intuitive dictionary extension.
Love the extension, but recently I am having issues. The Google dictionary 'Tab' in the popup is unavailable (greyed out). Often, the google 'tab' asks me to log in but always gives me an error when I try too (I am log in to google in chrome and if I open any google component). I have searched the settings for help and experimented with changes. I have tried to have the actual google dictionary extension installed, not installed, installed but disabled. I have tried to uninstall and reinstall this extension. I will give it a few weeks and then look at competitors? I love the extension, but right now it is more in the way than helpful.
Best of. More Custom dictionaries that can be added, will be great.
It is great but It only allows me to define one word the suddenly it don't work, and I have to restart/page and It will work but only at first. I'm using Edge btw. I hope that the developers address this issue. Thank you.
Friendly request if possible: to add the option of adding more than two languages on the List of languages section, it would be helpful for some of us learning a third language. Thanks
It's an amazing tool. Thanks a bunch :) Have you thought about integrating with chatGPT/gemini/other LLM? It would be really handy to have the ability to define a custom prompt and use the query string and the language as a variable to the custom prompt.
Awesome!! It would be fantastic if you guys add an option to create Anki Flashcards from the pop up dictionary having the ability to save the definition that I want to be added in a certain deck and note, there are other extension or apps that can do that.
It's amazing. I use this primary for language learning and looking at foreign source materials, given its ease of ability to translate. Bing Images can act akin to a visual dictionary, Google Translate has obvious utility etc., so does Wikipedia (which I read a lot in my spare time anyway) and Google Dictionary. The custom source is also incredibly useful. A feature I would desperately like to see - that would boost it to five stars for me, and take it to the next level - would be mouseover/hover popup as an option. Some other specific language learning extensions make use of this, but not many (for Chinese, I know Zhongwen and Zhongzhong build this into their extensions), and I have not found any other general extension with this functionality. If mouseover definer becomes a thing in a future update (or if it already a thing, and I just haven't found the setting), without a doubt, I will increase to five stars.
First Impression: Just amazing.
Thank you and good job.
This is absolutely brilliant, and a great addon that differentiates it from the other dictionary apps :) Not only does it have the dictionary service, it also has a translator, googler, wikipedia lookup and I think more? Amazing tool, great product!