DeepL: AI translator and writing assistant Firefox

DeepL: AI translator and writing assistant

By: DeepL
Stay informed, work smarter, and communicate globally without leaving your browser.

Features & Capabilities

DeepL: AI Translator and Writing Assistant is a powerful Chrome extension that enhances your global communication and productivity without leaving your browser. Trusted by millions, it offers highly accurate translations and writing assistance across 30+ languages with deep integration into Google Workspace and popular platforms like YouTube, WhatsApp, LinkedIn, and X.

With DeepL, you can translate sections or entire pages on the go, receive style and clarity improvements, apply custom glossaries, and automate translations (with Pro versions). Prioritizing data security, DeepL Pro and DeepL Write Pro ensure your content remains confidential. Whether for professional emails, documents, or social media, DeepL streamlines multilingual communication efficiently and securely.

User Growth & Download Statistics

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
DeepL
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/deepl-translate/
Email:
fi*****@deepl.com
Website:
https://deepl.com

Permission Change History

2024-09-26: Version 1.12.3 → 1.25.3
Add Permissions: alarms

User Reviews

Reviewers praise DeepL for high-quality, accurate translations and for saving time by showing results in a handy browser sidebar, with an easy-to-use UI. It’s seen as trustworthy and effective, including for technical texts. The main recurring downsides are login/authentication issues that block translations and the lack of a dark mode, both of which multiple users request.
Pros
  • High-quality / accurate translations (DeepL quality)
  • Convenience and time-saving via the browser sidebar (open in sidebar, no need to copy/paste)
  • Easy to use / intuitive UX
  • Good for technical translations
  • Better than Google Translate
Cons
  • Login/authentication issues preventing translations (may be blocked if not logged in)
  • Lack of dark mode / missing dark theme in extension and browser sidebar
Recent reviews
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by De*****, 2026-06-09

by Fi*****, 2026-06-06

by Pu*****, 2026-06-01
View all user reviews ›

Is DeepL: AI translator and writing assistant Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

DeepL: AI translator and writing assistant requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

DeepL: AI translator and writing assistant has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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