Editing the source code of a section
Learn how to manually customize section code using Expert Mode in the B12 editor.
![]() Written by Jay Douglas
Last updated: 29 Dec. 2025 |
This feature requires the Basic Subscription or above. View plans and pricing here. |
Please proceed with caution.
These instructions are for users with advanced knowledge of HTML, JavaScript, and CSS code only.
Editing HTML and JavaScript code can cause errors and customizing section code may keep your website from updating to new versions in the future.
If you make any unwanted changes, you can restore your site to a previous version by following these instructions.
Editing section code
1. Enable expert mode.
2. Go to > Website
, then select the page and section you would like to access. Pages
3. Scroll to Layout, then click customize it manually.
4. In the layout tree that appears, click the corresponding component under a column.
The corresponding component will have a different title.
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5. Click Customize this component.
6. The Component HTML box will open. Review or edit the code as needed.
Tips:
- Click the Wrap text option in the bottom right to see all lines' information.
- Consider copying the original code into a text editing program like Notepad or TextEdit to use as a backup or reference easily.
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7. Click Save after making any changes. Your code should take effect and be visible in the website editor.
