AO3 Word Replacer Firefox

AO3 Word Replacer

By: 0nis
A browser extension that lets you create and manage custom word replacements on Archive of Our Own.

Features & Capabilities

Customize your reading experience on Archive of Our Own by automatically replacing words or phrases with your own alternatives.

Please note that this extension only works on Archive of Our Own pages!

Support & Bug Reports If you have a question, feature request, or encounter an issue, please open an issue on GitHub: https://github.com/0nis/ao3-word-replacer/issues

Features • Replace words or phrases with your custom alternatives. • Configure the settings of each replacement individually. • Optionally only replace text that matches the capitalization of the original. • Optionally replace only full, standalone words. • Optionally preserve the capitalization pattern of the original text. • Export or import your replacement list to use across browsers or devices.

Settings Overview • Original - Word or phrase to replace (e.g., Y/N). • Replacement - Word or phrase to use instead (e.g., Star). • Match Case - If enabled, only replaces text with identical capitalization (woah won't match WOAH). • Whole Word - If enabled, replaces only full, standalone words (he won't match the). • Preserve Case - If enabled, copies the capitalization pattern of the original (COLOR -> COLOUR). • Remove - Deletes the entry.

Notes • All data is stored locally in your browser; export/import your list if switching browsers or devices. • Remember to save before closing the modal!

User Growth & Download Statistics

Manifest V2 Add-on
By:
0nis
Daily users:
725 9
Rating:
4.67
(6)
Version:
1.0.2 Last updated: 2025-11-17
Version code:
6077280
Creation date:
2025-11-01
Risk:
Low risk impact Moderate risk likelihood
Permissions:
Content scripts matches:
  • archiveofourown.org
Size:
22.94KB
Email:
0n*****@gmail.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-07-11
Compare stats and ranking:

Other platforms

Chrome
AO3 Word Replacer (v1.0.2)
357 5.00 (2)

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:
0nis
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/ao3-word-replacer/
Email:
0n*****@gmail.com
Website:
https://github.com/0nis/ao3-word-replacer

User Reviews

by Fi*****, 2026-04-04

It does its job!! Thank you for creating this However, for some reason when I change anything it puts it entirely in bold?? (Ex. Y/N to idk Jessica becomes JESSICA) Could you fix that? Is it a problem on my end?
by Lu*****, 2026-03-15

I'm giving this 1 star because I had to download and try it to find it doesn't work on normal web pages - just to alert other addon searchers. It looks really good - better than FoxReplace because it has both find case and preserve case options. Would definitely be 5/5 if it could be applied to general web pages (I wanted it for substack edits). Or if the addon clarifies it doesn't work on any other pages. ✔
by pi*****, 2026-02-19
View all user reviews ›

Is AO3 Word Replacer 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.

AO3 Word Replacer requires very minimum permissions.

Risk impact analysis details
  • High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
  • Low ******* ****** ** *** ********* ******** *******************
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.

AO3 Word Replacer is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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