What-Version

Find the right software version for your system

Stable release timeline

Mozilla Firefox version history

Free and open source web browser with privacy protection.

Current verified version154.0

Verified 2026-08-23 from Mozilla product details.

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Show the current Mozilla Firefox version

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Mozilla Firefox current stable version badge
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Release timeline

15 stable release records

Newest first
  1. 154.0Mozilla Firefox 154.0
    Official release ↗
  2. 153.0Mozilla Firefox 153.0
    Official release ↗
  3. 152.0Mozilla Firefox 152.0
    Official release ↗
  4. 151.0Mozilla Firefox 151.0
    Official release ↗
  5. 150.0Mozilla Firefox 150.0
    Official release ↗
  6. 149.0Mozilla Firefox 149.0
    Official release ↗
  7. 148.0Mozilla Firefox 148.0
    Official release ↗
  8. 147.0Mozilla Firefox 147.0
    Official release ↗
  9. 146.0Mozilla Firefox 146.0
    Official release ↗
  10. 145.0Mozilla Firefox 145.0
    Official release ↗
  11. 144.0Mozilla Firefox 144.0
    Official release ↗
  12. 143.0Mozilla Firefox 143.0
    Official release ↗
  13. 142.0Mozilla Firefox 142.0
    Official release ↗
  14. 141.0Mozilla Firefox 141.0
    Official release ↗
  15. 140.0Mozilla Firefox 140.0
    Official release ↗

How to cite this version history

Link to this page when you need a version history people can read. Use JSON or CSV when you need the data. Each release links to the publisher’s official record.

Open Mozilla Firefox JSON dataOfficial publisher source
Markdown
Preview

Mozilla Firefox version history · verified 2026-08-23 · source: Mozilla product details

[Mozilla Firefox version history](https://www.what-version.com/versions/firefox/) · verified 2026-08-23 · source: [Mozilla product details](https://product-details.mozilla.org/1.0/firefox_versions.json)
HTML
Preview

Mozilla Firefox version history · verified 2026-08-23 · source: Mozilla product details

<a href="https://www.what-version.com/versions/firefox/">Mozilla Firefox version history</a> · verified 2026-08-23 · source: <a href="https://product-details.mozilla.org/1.0/firefox_versions.json">Mozilla product details</a>
Text
Preview

Mozilla Firefox version history. What-Version. Verified 2026-08-23. https://www.what-version.com/versions/firefox/ Source: https://product-details.mozilla.org/1.0/firefox_versions.json

Mozilla Firefox version history. What-Version. Verified 2026-08-23. https://www.what-version.com/versions/firefox/ Source: https://product-details.mozilla.org/1.0/firefox_versions.json
Sources and last check
Freshness evidence

Source-backed record details

Source ownership

Vendor-provided source

Version evidence

Publisher API record

Last catalog check

2026-08-23

Recently checked — Checked 15 days ago; the catalog review window is 45 days.

Support lifecycle

Stable channel

Active support ends

Not published

Security support ends

Not published

Firefox also offers Extended Support Release (ESR). Choose ESR when the publisher’s enterprise support cadence matters more than the newest stable features.

Read Firefox release channels ↗
Distribution trust

Where can you install it?

What-Version labels who publishes or maintains each route. Community routes are useful, but they are not presented as vendor downloads.

Vendor-providedMozilla product details

Version evidence and catalogued download links are anchored to the publisher-owned source.

Open publisher source ↗