Render inline and display LaTeX math on any website using KaTeX. Careful with input fields! Be sure to have rendering OFF when entering an input field, otherwise you can mess up your delimiters. I have made a fix button for this, but it might not be exactly correct.
This vibe coded script renders LaTeX math expressions on any website using KaTeX, with inline delimiters and display delimiters. It provides a toggle button to switch rendering on/off.
Disclaimer: sometimes you might have to toggle a couple times for all the LaTeX to render.
Disclaimer: multiline code is not (yet?) supported.
🔧 Features:
Renders both inline and display math expressions
Highlights the rendered expression in color for easy recognition
Supports multiple delimiter styles: [;...;], \(...\), and $...$ for inline and \[...\] and $$...$$ for display. You can easily edit the script to add your own or change which delimiter is used for what.
Toggle button lets you enable/disable rendering whenever you want
Auto-hides buttons when holding CTRL for unobtrusive browsing
Only displays the button when a valid delimiter is detected on the page
Leaves <input>, <textarea>, and editable fields untouched while rendering is ON
Minimal and fast — scans efficiently and only activates when LaTeX is detected
⚠️ Caution: Always turn LaTeX rendering OFF before typing into input fields or rich text editors. Rendering changes the DOM and could interfere with form content if left on while editing.
⚙️ Installation:
