Novel Name Replacer — Shizu

Novel Name Replacer allows you to replace character names on any webpage. This extension is designed for readers who want to customize names while reading online novels, fanfiction, or any text-based content.

Features:
Multiple Replacements
Add unlimited name replacement pairs. Each replacement consists of an original name and the text you want to replace it with.

Manual and Automatic Modes:
Choose to apply replacements manually with a button click, or enable automatic replacement that applies changes when pages load.

Persistent Storage:
All replacement pairs are saved in your browser and persist across sessions. You don't need to re-enter your preferences.

Whole Word Matching:
The extension uses word boundary detection to ensure only complete words are replaced. For example, replacing "Harry" will not affect "Harryton".

Case-Insensitive:
Replacements work regardless of capitalization. The original text case is replaced with your specified replacement.

Cross-Site Compatibility:
Works on all websites without requiring per-site configuration. Common sites include Archive of Our Own, Wattpad, FanFiction.Net, Royal Road, and other reading platforms.

Mobile Support:
Fully functional on Firefox for Android with a touch-optimized interface.

How It Works:
Open the extension popup from your browser toolbar
Click "Add Replacement" to create a new replacement pair
Enter the original name in the first field
Enter your preferred replacement in the second field
Either click "Apply to Page" for immediate replacement, or enable "Auto-replace on page load" for automatic application
Remove individual replacements or clear all at once as needed
Technical Information
Browser Compatibility
Requires Firefox 79 or higher. Compatible with Firefox for Desktop and Firefox for Android.

Performance:
The extension processes text nodes in the DOM using tree walking. It skips script, style, and input elements to avoid breaking page functionality.

Dynamic Content:
Includes mutation observer support to handle dynamically loaded content on modern web applications.

Privacy:
All data is stored locally using Firefox's storage API. No external connections are made. No user data is collected or transmitted.

Use Cases:
Fanfiction Reading
Replace character names in fanfiction to personalize stories or use names you prefer over canonical ones.

Web Novel Translation:
Change unfamiliar translated names to more familiar equivalents for easier reading comprehension.

Accessibility:
Simplify complex character names or replace them with easier-to-read alternatives.

Reader Insert Stories:
Replace placeholder text like "Y/N" with actual names in reader-insert fiction.

Limitations:
The extension modifies page display only. It does not change the underlying HTML source or affect search functionality on websites. Changes are temporary and revert when the page is reloaded, unless auto-replace is enabled.

Privacy Policy:
This extension does not collect, transmit, or store any user data externally. All name replacement preferences are stored locally on your device using Firefox's storage API. The extension does not make network requests, does not include analytics, and does not track user behavior.