New Update Firefox’s Tab Notes Feature Feels Genuinely Useful (For Me, At Least)

[lokamoka820]

Firefox Nightly is experimenting with a built‑in “Add Note” feature for open tabs.

When you click the new notepad icon that appears next to a tab’s title, you can type a short reminder (e.g., a color, model, or size you’re researching). The note stays visible as long as the tab remains open, helping you recall why you left the page.

Key points:

• The feature is native to the browser—not an add‑on—and is only available on tabs that have a loaded website. It does not work on blank new‑tab pages, internal Firefox pages, or the settings UI.
• The note disappears automatically when the tab is closed.

To try it out:

1. Go to "about:config" in a new tab
2. Search for "browser.tabs.notes.enabled"
3. Double-click the line to set the value to "true"
4. Restart the browser (if you see ‘add note’ greyed out)

To disable it, repeat the process but this time double click-click the flag to set the vale to "false".

Firefox's Tab Notes Feature Feels Genuinely Useful (For Me, At Least) - OMG! Ubuntu

Want to add a note to a tab in Firefox? Well, soon you can. Mozilla developers are working on a new Tab Notes feature, and it's available to test early - here's how.

www.omgubuntu.co.uk

 

[Bot]

Firefox Nightly is experimenting with a built‑in “Add Note” feature for open tabs.

When you click the new notepad icon that appears next to a tab’s title, you can type a short reminder (e.g., a color, model, or size you’re researching). The note stays visible as long as the tab remains open, helping you recall why you left the page.

Key points:

• The feature is native to the browser—not an add‑on—and is only available on tabs that have a loaded website. It does not work on blank new‑tab pages, internal Firefox pages, or the settings UI.
• The note disappears automatically when the tab is closed.

Firefox's Tab Notes Feature Feels Genuinely Useful (For Me, At Least) - OMG! Ubuntu

Want to add a note to a tab in Firefox? Well, soon you can. Mozilla developers are working on a new Tab Notes feature, and it's available to test early - here's how.

www.omgubuntu.co.uk

Yes — Firefox is currently testing “Tab Notes” / “Add note” as a built-in feature, and your description matches what’s being reported for recent Nightly/Dev builds.

One important nuance (persistence differs by build)

From Mozilla’s own “Foxfooding: Tab Notes” campaign (ran January 5–16, 2026), the current proof-of-concept is described as being URL-associated rather than strictly “tab-associated”, specifically so a note can “stick” to a page even if you close the tab or restore it later. In other words, on some builds/configurations, notes may reappear when you reopen the same page, rather than always disappearing when the tab is closed. This also means the behavior can change as Mozilla iterates on the feature.

So if someone tests this and gets different results than “note disappears on tab close”, it’s likely not user error — it’s the experiment evolving across channels/versions.

Availability / where it works

• Reports agree it only works on normal web pages (not blank new-tab, and not most internal Firefox UI pages like Settings).
• In Nightly, Mozilla has stated it was available without needing pref flips during the foxfooding period; on other channels it may be behind the about:config pref you listed (browser.tabs.notes.enabled).

Security & privacy considerations (practical advice)

• Treat tab notes as potentially stored locally in your Firefox profile while the feature exists (even if the UI makes it feel “temporary”).
• Avoid putting secrets in them (passwords, full addresses, license keys, recovery codes).
• If you’re testing in Nightly, using a separate Firefox profile is the safer approach in general (Nightly is intentionally unstable and experimental).

Sources

• Foxfooding: Tab Notes - Mozilla Community Portal
• Firefox's Tab Notes Feature Feels Genuinely Useful (For Me, At Least) - OMG! Ubuntu