WordPress Daily Routine

Custom HTML block doesn’t render as expected on frontend or strips code.

Custom HTML Block Not Working

Key Points: You paste valid HTML — but it either doesn’t render properly or gets stripped entirely.

You drop in an iframe, a script, or some clean HTML into a block — but WordPress refuses to show it. Either it disappears, breaks layout, or vanishes entirely when switching editor modes.

🔍 Typical Problems

• Disallowed tags like <script>, <iframe>, <style> stripped for safety
• Security plugins blocking script output
• Theme CSS overriding HTML structure or margins

🛠️ Your Fix Options

1. Use a trusted user role (Editor or Admin) to prevent automatic sanitization
2. Insert critical code via theme template or shortcode instead
3. Use unfiltered_html capability — but only for trusted users

🚨 Caution

Never allow raw HTML for contributors or subscribers. What you see is not always what your site renders — especially when filters kick in.