HTML Ref by Libor Benes

A sidebar with the complete HTML reference. Search all 100 elements, including descriptions and attributes, sorted into 12 categories. Offline, no data collection, fully secure, secured by future standards.

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About this extension

Designed for web developers, researchers, designers, and students.
Streamlines your workflow with the following features:
• Dynamic Search: Filter elements in real-time by name, description, or attributes. Case-insensitive for ease of use.
• Autocomplete: Sidebar-specific suggestions for element names, isolated from browser history, with up to 5 recent search terms saved locally only.
• Collapsible 12 Categories to save space and reduce scrolling.
• Attributes: Shown below each element, styled visually different from the elements for clarity.

Security is a priority:
• Minimal Permissions.
• No Data Collection: Operates entirely offline, with all its source data saved locally in a file.
• Safe DOM Manipulation.
• No Third-Party Libraries.
• Adheres to Mozilla’s development and security standards, including future data collection permissions requirements.
• Privacy: No personal data collected.

Data is sourced for accuracy from MDN and WHATWG as of September 2025.

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