Is Relingo - Master vocabulary while browsing websites and watching YouTube safe?

Low risk

Relingo runs on every page and sends words and sentences you select to its own API and to third-party dictionary and translation services.

Relingo's content script loads on all pages (including local files) and, when you select or hover over text, posts that text to api.relingo.net for AI translation and grammar analysis. The same selections are also relayed through a background fetch proxy to outside dictionary and machine-translation providers such as Collins, Longman, Oxford, Merriam-Webster, Youdao, Microsoft Translator, NiuTrans, and DeepL to build word definitions and translations.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

Lesslabv3.32.0Chrome Web Store
17Risk
Who publishes it

Lesslab - 2 other listings from the same operator, none carrying a finding

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Lesslab

Same store account

2 other listings published from this account, 103k+ users between them, none of them carrying a finding.

Shared hosts - 1 hostname

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

trk.lesslab.net
Also called by 2 other listings, including Clearly Reader

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 3.32.0. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on relingo.net

    *://*.relingo.net/

  • Read and change your data on localhost

    http://localhost/* and 1 more

  • Read and change your data on 127.0.0.1

    http://127.0.0.1/*

  • Store data in your browser

    storage

  • Read and change cookies, including the ones that keep you signed in

    cookies

  • Add items to the right-click menu

    contextMenus

Where it sends data

Destinations our analysis observed Relingo - Master vocabulary while browsing websites and watching YouTube contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • api.cognitive.microsofttranslator.com

    Relingo - Master vocabulary while browsing websites and watching YouTube sends data to api.cognitive.microsofttranslator.com. 12 other extensions we have analyzed send data here.

  • api.niutrans.com

    Relingo - Master vocabulary while browsing websites and watching YouTube sends data to api.niutrans.com. 2 other extensions we have analyzed send data here.

  • www.merriam-webster.com

    Relingo - Master vocabulary while browsing websites and watching YouTube sends data to www.merriam-webster.com. 2 other extensions we have analyzed send data here.

  • www.oxfordlearnersdictionaries.com

    Relingo - Master vocabulary while browsing websites and watching YouTube sends data to www.oxfordlearnersdictionaries.com. One other extension we have analyzed sends data here.

  • api.relingo.net

    Relingo - Master vocabulary while browsing websites and watching YouTube sends data to api.relingo.net. No other extension we have analyzed sends data here.

  • www.collinsdictionary.com

    Relingo - Master vocabulary while browsing websites and watching YouTube sends data to www.collinsdictionary.com. No other extension we have analyzed sends data here.

  • www.ldoceonline.com

    Relingo - Master vocabulary while browsing websites and watching YouTube sends data to www.ldoceonline.com. No other extension we have analyzed sends data here.

  • www.youdao.com

    Relingo - Master vocabulary while browsing websites and watching YouTube sends data to www.youdao.com. No other extension we have analyzed sends data here.

  • DeepL

    Relingo - Master vocabulary while browsing websites and watching YouTube sends data to DeepL. Named as a recipient by 10 other extensions we have analyzed.

Updated 30 September 2026dpphkcfmnbkdpmgneljgdhfnccnhmfig