
SelectON — selection popup. Copy & search by emvaized
Customizable popup with actions on text selection, just like in Opera browser
363 Users363 Users
You'll need Firefox to use this extension
Extension Metadata
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About this extension
● Copy or search any text in one click, just like in Opera browser
● Currency converter (supports 30+ currencies and 10+ crypto currencies)
● Basic units converter (metric/imperial)
● Contextual buttons depending on selected text, such as 'Open link', 'Translate', 'Show on map', CSS color preview and more
● Smart selection feature — automatic snapping by words, so you'll never lose that last letter again
● Customizable appearance for the tooltip, and ability to set custom text selection color
● Selection handles, which allow to quickly edit text selection
● Live translation of the selected text on hovering the "Translate" button
● Dictionary button, which fetches definition from Wikipedia on hover
● Highlighter button, which allows to highlight specific text on page
● Instant word and symbols count in the text selection
...and many more
SelectON does not collect, store or share any personal data, and will always remain open-source as a guarantee of it. If you want to financially support the project, you can find the Ko-Fi link on GitHub page or in the extension options.
● Currency converter (supports 30+ currencies and 10+ crypto currencies)
● Basic units converter (metric/imperial)
● Contextual buttons depending on selected text, such as 'Open link', 'Translate', 'Show on map', CSS color preview and more
● Smart selection feature — automatic snapping by words, so you'll never lose that last letter again
● Customizable appearance for the tooltip, and ability to set custom text selection color
● Selection handles, which allow to quickly edit text selection
● Live translation of the selected text on hovering the "Translate" button
● Dictionary button, which fetches definition from Wikipedia on hover
● Highlighter button, which allows to highlight specific text on page
● Instant word and symbols count in the text selection
...and many more
SelectON does not collect, store or share any personal data, and will always remain open-source as a guarantee of it. If you want to financially support the project, you can find the Ko-Fi link on GitHub page or in the extension options.
Rated 4.8 by 53 reviewers
Permissions and dataLearn more
Required permissions:
- Get data from the clipboard
- Display notifications to you
- Access your data for all web sites
Optional permissions:
- Access your data for sites in the wikipedia.org domain
- Access your data for translate.googleapis.com
- Access your data for api.exchangerate.host
- Access your data for min-api.cryptocompare.com
More information
- Add-on Links
- Version
- 3.9.8
- Size
- 154.56 kB
- Last updated
- 4 days ago (4 Aug 2025)
- Related Categories
- Licence
- MIT Licence
- Version History
- Add to collection
Support this developer
The developer of this extension asks that you help support its continued development by making a small contribution.
Release notes for 3.9.8
- Updated style of Translate and Dictionary hover popups
- Fixed search buttons in the main panel getting color inverted
- Fixed text field panel reappearing after button click
- Improvements for Dictionary button hover popup
- Improved dates detection for the Calendar button
- Improved compatibility with other extensions and websites
- Renamed CSS selectors from "selection-" to "selecton-" for better compatibility
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