Plain Text or Regular Expression Find and Replace Text on Web Pages

Replace promo image
What is Replace?

"Replace" is a Firefox extension that allows you to Find & Replace text on web pages. It supports both plain text and Regular Expression. Added features include replacing in textarea & editable elements, and an easily accessible help guide. This add-on promises no tracking, advertising, or privacy infringement.

By: erosman
Users: 740 ▲ 13
Rating: 4.45 (11)
Version: 1.5 (Last updated: 2023-08-14)
Creation date: 2017-09-22
Weekly download count: 30
Firefox on Android: No
Risk impact: Low risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 2
  • activeTab
  • notifications
Size: 80.80K
URLs: Website
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
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Replace is a tiny multi-process extension to Find & Replace text on web pages using plain text or Regular Expression. I made the addon because of a request and will add more features if needed.

Note: None of my extensions contain any tracking, advertising or privacy infringement.


  • Plain Text Find & Replace
  • Regular Expression Find & Replace
  • Replace in textarea & editable Elements (v1.1)
  • Help Guide
  • Display notifications to you: Used to inform users
Optional Permissions
  • Access your data for all websites: Needed to replace text in some iframes
For more comprehensive editing of editable elements elements such as textarea, Input, etc, you can try Edit
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Helpful for editing large chunks of text
  • Very handy tool for massive editing
  • Optimized for specifically the 'replace' functionality
  • Issues with the final character of the search not being processed until focus changes or addition of an extra character
  • Fails to find anything on any page
  • Inefficiencies when handling escaping characters
  • Latest update adds the change twice
Most mentioned
  • Issues with searching and replacing text
  • Useful for editing large chunks of text
  • Problems arising from the latest update
View all user reviews
Risk impact

Replace is relatively safe to use as it requires very minimum permissions.

Risk likelihood

Replace is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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