This Chrome extension is intended for personal customization on AnimeWorld
only. Using it on other sites may break functionality or violate terms of service.
- 🎨 Change background of .img-right: Apply custom backgrounds from 2020 to 2025 and a base version
- 💾 Persistent backgrounds: Your selected background remains even after refreshing the page
- 🔄 Reset button: Quickly restore the default background
- ⚡ Instant application: Uses CSS injection + MutationObserver to minimize flickering
- Google Chrome (or Chromium-based browser supporting Manifest V3)
- No additional libraries needed
- Clone or Download the Repo:
git clone https://github.com/TheMrZenith/Yuriko-Background-Changer
or download the ZIP and extract it.
- Load the Extension in Chrome:
- Go to
chrome://extensions/ - Enable Developer mode
- Click Load unpacked and select the extension folder
- Use the Extension:
- Open AnimeWorld
- Click the extension icon and choose a background
- Hit RESET to revert to the default
- Select a background from the popup → it’s immediately applied to
.img-rightand saved in Chrome storage. - The background persists across page reloads thanks to a content script using CSS injection + MutationObserver .
- Press RESET to clear the stored background and restore the original.
- The extension applies the background as early as possible (document_start) to reduce flash of the default background.
- Some micro-flashes may still occur due to dynamic content loading on the site.
manifest.json→ Chrome extension manifest, declares permissions and content scriptspopup.html / popup.js→ UI for choosing backgrounds and resettingcontent.js→ Applies and maintains selected background on page loadassets/→ Icons and image assets
This project is distributed under the MIT License. See LICENSE for details.