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Latest Version
Firefox Portable 135.0.1 LATEST
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Review by
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Operating System
Windows 10 / Windows 11
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User Rating
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Author / Product
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Filename
FirefoxPortable_135.0.1_English.paf.exe
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MD5 Checksum
04cbaf4806365465271d8bda9cb743e8
Developed by PortableApps.com in collaboration with Mozilla, this portable version allows users to carry their favorite browser on a USB drive or cloud storage and run it on any Windows PC without leaving behind personal data.
It retains all the features of the standard Firefox, including enhanced security, privacy settings, and add-on support, while ensuring portability and ease of use.
Key Features
Portability – Runs from a USB stick or cloud storage without installation.
Full Firefox Experience – Supports add-ons, themes, and developer tools.
Privacy & Security – Includes tracking protection, private browsing mode, and security updates.
Automatic Updates – Keeps the browser up to date when used on an internet-connected PC.
Data Persistence – Saves bookmarks, history, and extensions between sessions.
Customizability – Supports UI customization with themes and extensions.
Cross-Platform Syncing – Integrates with a Firefox account for syncing bookmarks, history, and passwords.
Open-Source & Free – Offers transparency and security with an open-source codebase.
User Interface
Firefox Portable retains the same clean and customizable interface as the regular desktop version.
The UI consists of a minimalist design with a tabbed browsing layout, an address bar with integrated search, and a customizable toolbar.
Users can personalize their experience with themes and extensions, making it easy to create a tailored browsing experience.
Installation and Setup
Download – Visit the PortableApps website or FileHorse.com and download the latest Firefox Portable 32/64bit package.
Extract Files – Run the downloaded file and extract it to a USB drive or a folder on your PC.
Run the Browser – Open the folder and launch FirefoxPortable.exe.
Customize Settings – Configure extensions, privacy settings, and preferences as needed.
How to Use
- Launch FirefoxPortable.exe from the extracted folder.
- Browse as usual, with bookmarks, history, and extensions saving to the portable directory.
- To update, download the latest version and replace the old files while keeping your personal data.
- For privacy, delete the "profile" folder if you wish to reset all settings.
Is Firefox Portable different from the standard Firefox?
No, it offers the same features but is designed to run without installation.
Can I sync my bookmarks and passwords?
Yes, by signing into a Firefox account, you can sync browsing data across devices.
Does it update automatically?
Yes, but you must have an internet connection and manually download updates from PortableApps.
Can I run Firefox Portable on macOS or Linux?
No, it is designed for Windows, but you can use regular Firefox on macOS and Linux.
Will Firefox Portable leave traces on a computer?
No, it is designed to be self-contained and does not leave browsing history or settings on the host machine.
Alternatives
Google Chrome Portable – Similar portability but requires a Google account for full functionality.
Opera Portable – Offers built-in VPN and social media integration.
Brave Portable – Privacy-focused with ad-blocking and built-in Tor browsing.
Tor Browser Portable – Best for anonymous browsing with enhanced privacy features.
System Requirements
- OS: Windows 7, 8, 10, 11 (32-bit or 64-bit)
- Processor: Intel/AMD 1 GHz or faster
- RAM: 512MB (1GB+ recommended)
- Storage: 200MB free space (additional for cache and downloads)
- Internet: Required for updates and cloud syncing
- Does not require installation
- Fully functional with all Firefox features
- Leaves no traces on the host computer
- Supports extensions, themes, and customization
- Free and open-source
- Updates must be manually downloaded
- Performance may be slower on USB drives
- Limited to Windows (no macOS or Linux support)
- No official Mozilla support for the portable version
- May have compatibility issues with certain extensions
Firefox Portable is an excellent choice for users who need a lightweight, privacy-focused browser that can be carried on a USB drive or cloud storage. It delivers the full Firefox experience without installation, making it perfect for students, professionals, and anyone who uses multiple computers.
While it has minor limitations, such as manual updates and slower performance on USB drives, its flexibility and security make it one of the best portable web browsers available.
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
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
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