Features

• Copy or search any text in one click — especially useful for laptops
• Customizable appearance for tooltip and custom text selection color
• Currency converter (supports 30+ currencies & 10+ crypto currencies)
• Basic units converter (metric/imperial) and timezones conversion
• Contextual buttons depending on selected text, such as 'Open link', 'Translate', 'Show on map', CSS color preview and more
• Smart selection - automatic snapping of text selection by words, so you'll never lose that last letter again
• 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 and quickly find it later

 

Screenshots

More screenshots

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FAQ

Moved to the Wiki page – read here

Donate

If you really enjoy this project, please consider supporting its further development with a small donation!

     

Currency conversion

In order to make extension more autonomous, currency rates are set to be updated every 2 weeks, and at the moment of conversion data may not be 100% accurate. Currency conversion output is intended to be used only for a quick estimation. You can decrease update interval in extension's settings if needed, but minimal value for now is 7 days to not cause too much load on API servers. Currency rates are fetched from fawazahmed0's currency-api.

List of the supported currencies

AUD — Australian Dollar
BGN — Bulgarian Lev
BRL — Brazilian real
CAD — Canadian Dollar
CHF — Swiss Franc
CNY — Chinese Yuan
CRC — Costa Rican Colon 
CZK — Czech Koruna
DKK — Danish Krone 
EUR — Euro
GBP — British Pound 
HKD — Hong Kong dollar
ILS — Israeli New Sheqel
INR — Indian Rupee
IRR — Iranian Rial
JPY — Japanese Yen
KPW — North Korean Won
KRW — South Korean Won
KZT — Kazakhstani Tenge
MNT — Mongolian Tugrik 
MXN — Mexican Peso
NGN — Nigerian Naira
NOK — Norwegian krone
PLN — Polish złoty
RUB — Russian Ruble
SAR — Saudi Riyal
SEK — Swedish Krona
TRY — Turkish Lira 
UAH — Ukrainian Hryvnia
USD — United States Dollar
VND — Vietnamese Dong
ZAR — Rand

Crypto:
BTC — Bitcoin
ETH — Etherium
LTC — Litecoin
ADA — Cardano
BCH — Bitcoin Cash
XRP — Ripple
ZEC — Zcash
XMR — Monero
ZCL — ZClassic
DOGE — Dogecoin
IOTA (MIOTA)
EOS

Contribution

You can make SelectON better without even knowing how to code:

• Provide translation for your language: Base English file
• Add your currency to the list of supported currencies: Currencies list
• SelectON relies on looking for keywords in the selected text. Enhance them with keywords for your language: Keywords

Make your changes, and then create pull request here on GitHub so I can merge it. Also, you can always write me an email to share your ideas and suggestions.

Some ideas for future releases

• Advanced buttons editor, which allows to quickly turn on/off buttons and change reorder them with drag'n'drop
• Cloud sync of settings using browser account sync
• Ability to turn on/off background blur for tooltip and hover panels
• Make separate tab for markers in the extension popup, with separate category for markers for currently open page
• Translation and Search buttons for text fields

Building

• npm install to install all dependencies
• npm run build to generate dist folder with minimized code of the extension
• (optional) npm run build.chrome to generate dist folder for Chromium-based browsers (with few chagnes to Manifest)

My other browser extensions and projects

• Open in Popup Window – quickly open any links and images in a small popup window with no browser controls
• Circle Mouse Gestures – better mouse gestures, with visual representation of all available actions
• Text reflow on zoom – userscript and mobile browser extension which reflows all text after a pinch gesture
• Modern Inverted Mouse Cursors – cursor pack for Windows 10/11 which inverts all colors behind cursors