Fast and full-featured Internet browser that`s easy to use!

Firefox Portable

Firefox Portable

  -  143.69 MB  -  Open Source
  • Latest Version

    Firefox Portable 135.0.1 LATEST

  • Review by

    Juan Garcia

  • Operating System

    Windows 10 / Windows 11

  • User Rating

    Click to vote
  • Author / Product

    John T. Haller / External Link

  • Filename

    FirefoxPortable_135.0.1_English.paf.exe

  • MD5 Checksum

    04cbaf4806365465271d8bda9cb743e8

Mozilla Firefox Portable is a fast, full-featured Free Web Browser. The app includes pop-up blocking, tab-browsing, integrated Google, Yahoo, and Bing search, simplified privacy controls, a streamlined browser window that shows you more of the page than any other browser, and a number of additional features that work with you to help you get the most out of your time online. You can download Firefox for PC offline installer from the site by clicking on the free download button.

Check out the new Mozilla Firefox Portable version, which is the first of several releases called Firefox Quantum, getting you to the things you love and the stuff you need faster than ever before, along with a fresh new look.



Features and Highlights

2x Faster
Crazy powerful browser engine? Check. Less time waiting around for pages to load? Also, check. Get the best yet.

30% lighter than Chrome
Less memory usage means more space for your computer to keep running smoothly. Your other programs will thank you.

Smooth browsing
Whether you’ve opened 10 or 1000, switching between tabs is faster than ever with Firefox’s new, responsive engine.

Private Browsing
Mozilla FirefoxPortable for PC blocks online trackers while you browse and won’t remember your history after you’re done.

Tracking Protection
Some ads have hidden trackers that follow you online. Rude. We know. That’s why powerful tool stops them cold.

Faster Page Loading
By blocking some ads and scripts that bog down browsing, pages load up to 44% faster. Now that’s a win-win.

Screenshots
Uncomplicate screenshots. Take and share them directly from Firefox. That means no more searching for mysterious file names on your computer.

Pocket
Built right into the toolbar, it’s the ultimate save-for-later feature. View your articles, videos, and pages across any device.

Gaming & VR
Engineered for next-gen gaming, It has built-in support for WASM and WebVR. No additional installation is needed!

Library
Save time! Find all your favorite content like Pocket saves, bookmarks, browsing history, screenshots, and downloads in one spot.

Extensions
Customize with thousands of extensions like LastPass, uBlock Origin, Evernote, and more.

Themes
Makeover to suit your mood! Choose a new look from theme categories or create your own.

Toolbar
Set up Browser your way. Drag and drop features in and out of your toolbar for easy access.

Sync your devices
Seamlessly access passwords, bookmarks, and more. Plus, use the Send Tabs feature to instantly share open tabs between desktop, mobile, and tablet.

Note: Its support for Windows XP and Windows Vista is still available through Firefox ESR (Extended Support Release). Download Firefox for Windows XP or Vista.

Also Available: Download Firefox for Mac

  • Firefox Portable 135.0.1 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    Firefox Portable 135.0.1 Screenshot 1
  • Firefox Portable 135.0.1 Screenshot 2
  • Firefox Portable 135.0.1 Screenshot 3
  • Firefox Portable 135.0.1 Screenshot 4
  • Firefox Portable 135.0.1 Screenshot 5

What's new in this version:

New:
- Firefox Translations now supports more languages than ever! Pages in Simplified Chinese, Japanese, and Korean can now be translated and Russian is now available as a target language for translating into
- The credit card autofill feature is now being gradually rolled out to all users globally
- AI Chatbot access is now being gradually rolled out to all users. To use this optional feature, choose AI Chatbot from the sidebar or from Firefox Labs. Then, complete the provider selection to see the chat interface become available on the sidebar.
- Firefox now enforces certificate transparency, requiring web servers to provide sufficient proof that their certificates were publicly disclosed before they will be trusted. This only affects servers using certificates issued by a certificate authority in Mozilla's Root CA Program.
- Additionally, the CRLite certificate revocation checking mechanism is also being gradually rolled out, substantially improving the performance of these checks.
- Firefox now includes safeguards to prevent sites from abusing the history API by generating excessive history entries, which can make navigating with the back and forward buttons difficult by cluttering the history. This intervention ensures that such entries, unless interacted with by the user, are skipped when using the back and forward buttons.

Fixed:
- Made improvements to the Translations feature which will reduce the likelihood that models will invent new, made-up words under some circumstances

Various security fixes:
- CVE-2025-1009: Use-after-free in XSLT
- CVE-2025-1010: Use-after-free in Custom Highlight
- CVE-2025-1018: Fullscreen notification is not displayed when fullscreen is re-requested
- CVE-2025-1011: A bug in WebAssembly code generation could result in a crash
- CVE-2025-1012: Use-after-free during concurrent delazification
- CVE-2025-1019: Fullscreen notification not properly displayed
- CVE-2025-1013: Potential opening of private browsing tabs in normal browsing windows
- CVE-2025-1014: Certificate length was not properly checked
- CVE-2025-1016: Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 115.20, and Thunderbird 128.7
- CVE-2025-1017: Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbird 128.7
- CVE-2025-1020: Memory safety bugs fixed in Firefox 135 and Thunderbird 135

Changed:
- The refreshed New Tab layout previously rolled out in Firefox 134 to users in the United States is now being made available in all countries where Stories are available. It features a repositioned logo to prioritize Web Search, Shortcuts, and Recommended Stories at the top. The update also includes changes to the card UI for recommended stories and allows users with larger screens to see up to four columns for better use of space.
- The “Do Not Track” checkbox has been removed from preferences. If you wish to ask websites to respect your privacy, you can use the “Tell websites not to sell or share my data” setting instead. This option is built on top of the Global Privacy Control (GPC).
- The "Copy Without Site Tracking" menu item was renamed to "Copy Clean Link" to help clarify expectations around what the feature does. "Copy Clean Link" is a list based approach to remove known tracking parameters from links. This option can also now be used on plain text links.

Developer:
- A warning is now displayed when content-visibility is used on elements where size containment does not apply
- Introduced a new console command $$$ that allows searching the page, including within shadow roots.
- Enhancements to WebExtension debugging: Workers are now available in the Console panel’s context selector and breakpoints function correctly in content scripts.

Web Platform:
- Added support for a post-quantum key exchange mechanism (mlkem768x25519) for HTTP/3
- The attribute values which indicate the coordinates of PointerEvent may now be fractional values rather than only integers. This allows web apps to handle the events with higher-precision coordinates when the target element is transitioned by CSS and/or the viewport is zoomed.
- The behavior of mouseenter, mouseleave, pointerenter and pointerleave events was changed for improved spec compliance when the last mouseover or pointerover event target is removed
- Added support for the WebAuthn getClientCapabilities() method