Find & Replace All

Name: Find & Replace All
Author: mnewton

Regex find & replace across all text on any page. Capture-group substitutions, variables, and JavaScript-evaluated values, with undo.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-10-03

Version:

1.0.0

Last updated: 2026-09-23

Features & Capabilities

Find & replace ALL text on any webpage.

Full regex: capture groups, named groups, lookahead, i/m/s/u flags — or plain literal mode.
Substitutions: $1…$99, $& (whole match), $` / $' (around the match), $<name> (named group), $$.
Variables: use {{name}} in the replacement; define your own — values can be plain text or JavaScript.
Inline JS per match: {{= expr }} with match, g1…g9, groups, named, offset, i in scope.
Built-ins: {{date}} {{time}} {{datetime}} {{url}} {{host}} {{title}} {{rand}} {{i}} (match number).
Optional scopes: input fields & textareas, attributes (title, alt, placeholder, aria-label).
Count dry-run, multi-level undo, settings synced.

No background worker and no host permissions: it runs only on the tab you act on (activeTab).

Example — find (\d+) and replace with {{=Number(g1)*2}} doubles every number on the page.

User Growth & Download Statistics

Add-on

By:

mnewton

Daily users:

Version:

1.0.0 Last updated: 2026-09-23

Version code:

6498945

Creation date:

2026-09-20

Firefox add-on GUID:

find-replace-all@hisingh.dev

Firefox add-on numeric ID:

3075482

Weekly download count:

Firefox on Android:

Risk:

Permissions:

Size:

22.38KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-10-03

Compare stats and ranking:

Contact the developer

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Developed by:: mnewton
Firefox Add-ons Store: https://addons.mozilla.org/firefox/addon/find-replace-all/

Is Find & Replace All 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.

Find & Replace All does not require any sensitive permissions.

Risk impact analysis details

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.

Find & Replace All is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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