AnkiWeb
- Votes
- 0 (👍 0 · 👎 0)
- Updated
- 2026-10-10
- Anki versions
- 25.09~
- Description language
- en
MathJax NBSP Cleaner: Auto Removing of " " from Notes
AnkiWeb addon 126852831
Automatically detects and converts stray characters in MathJax fields back to normal spaces on focus-out, including dynamically generated, shadow DOM, and iframe editors.
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Maintenance
active
- Last update or commit: 2026-10-10 (22 days before the snapshot).
GitHub
No GitHub repository linked.
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Version branches
| Min Anki | Max Anki | Updated |
|---|---|---|
| 25.09 | + | 2026-10-10 |
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Description
MathJax NBSP Cleaner: Clean MathJax Formatting Automatically
When writing MathJax equations or editing formatted text, Anki's editor frequently writes double spaces into literal   strings. This corrupts MathJax rendering and clutters formulas - incredibly frustrating when using LaTeX inside cards!
MathJax NBSP Cleaner silently runs in the background of your card editor, automatically detecting and converting   characters back into normal spaces every time a field loses focus (before MathJax rendering triggers) by directly injecting raw HTML data.
Key Features
- Automatic Focus-Out Cleaning: Sanitizes fields immediately upon unfocusing (
focusout), right before MathJax re-renders your note preview. - Targeted MathJax Correction: Specifically targets escaped
 artefacts to restore proper LaTeX/MathJax expressions without altering unintended elements. - Deep Field Detection: Traverses regular DOM elements, shadow roots (Shadow DOM), and nested iframes to ensure every editor field is monitored simultaneously.
- Dynamic Field Monitoring: Uses a
MutationObserverto immediately attach cleaners to any dynamically generated fields without requiring an editor reload. - Native Change Dispatch: Emits native input events directly to the editor after sanitising, ensuring Anki registers and saves the corrected text instantly.
- Duplicate Prevention: Built-in script and listener flags prevent duplicate observers and multi-firing event handlers.
Usage
No configuration, shortcuts, or menus required. Install the add-on, restart Anki, and edit your MathJax notes as usual—the cleaner functions completely automatically in the background.