AO3 Word Replacer от 0nis

GitHub (issues, features, source):
https://github.com/0nis/ao3-word-replacer

Features
• Replace words or phrases with custom alternatives
• Optional case-sensitive matching
• Optional whole-word matching
• Preserve the capitalization pattern of replaced text
• Export or import your replacement list

Settings Overview
Original - Word or phrase to replace (e.g. Y/N)
Replacement - Word or phrase to use instead (e.g. Star)
Match Case - Only replaces text with identical capitalization
Whole Word - Replaces only full, standalone words
Preserve Case - Copies the capitalization pattern of the original
Remove - Deletes the entry

Tip
Remember to save before closing the modal.

Notes
• All data is stored locally in your browser
• Export/import your list if switching browsers or devices