FullForms by FullForms
Search your glossaries and look up abbreviations on FullForms.com from the address bar, right-click, or side panel.
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About this extension
FullForms brings your glossaries and abbreviation lookups right into Firefox. Search your FullForms lists from the address bar, the right-click menu, or a sidebar, and add new entries without leaving the page. FullForms.com lookups work even without an account.
What you can do
- Address-bar search: type
- Sidebar search: open the FullForms sidebar to search your lists and favorites, star entries, and quick-add new ones.
- Right-click any selected text to search it in your lists, look it up on FullForms.com, or add it as a new entry.
- Quick-add entries with definitions, types, tags, and rich descriptions (mentions, callouts, and more) without opening the website.
- Offline search: your lists are cached on this device, so lookups keep working when you lose connection.
Sign in once
Sign in with the same account you use at list.fullforms.com. A token is minted for this device under the hood (you never copy or paste anything) and you can revoke it anytime from your account page. Public FullForms.com lookups work without signing in.
Using it on Firefox
- The sidebar opens on the left. Use the sidebar toolbar button, or View > Sidebar > FullForms, or the keyboard shortcut.
- To set or change keyboard shortcuts, open
Your privacy
The extension talks only to list.fullforms.com to search your lists, add entries you create, and sign you in. It sends no analytics or telemetry anywhere. See the privacy policy.
What you can do
- Address-bar search: type
fullforms, a space, then your query, and pick a result straight from the suggestions.- Sidebar search: open the FullForms sidebar to search your lists and favorites, star entries, and quick-add new ones.
- Right-click any selected text to search it in your lists, look it up on FullForms.com, or add it as a new entry.
- Quick-add entries with definitions, types, tags, and rich descriptions (mentions, callouts, and more) without opening the website.
- Offline search: your lists are cached on this device, so lookups keep working when you lose connection.
Sign in once
Sign in with the same account you use at list.fullforms.com. A token is minted for this device under the hood (you never copy or paste anything) and you can revoke it anytime from your account page. Public FullForms.com lookups work without signing in.
Using it on Firefox
- The sidebar opens on the left. Use the sidebar toolbar button, or View > Sidebar > FullForms, or the keyboard shortcut.
- To set or change keyboard shortcuts, open
about:addons, click the gear, and choose Manage Extension Shortcuts.Your privacy
The extension talks only to list.fullforms.com to search your lists, add entries you create, and sign you in. It sends no analytics or telemetry anywhere. See the privacy policy.
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Permissions and data
Optional permissions:
- Access your data for list.fullforms.com
Required data collection, according to the developer:
- Authentication information
- Search terms
- Web site content
More information
- Add-on Links
- Version
- 1.15.3
- Size
- 58.93 kB
- Last updated
- 5 days ago (7 Jun 2026)
- Related Categories
- Licence
- MIT Licence
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection