Firefox Community Forum

To optimize performance and ensure cross-browser compatibility in complex web applications, several best practices can be implemented:

   Use Responsive Design: Employ responsive web design techniques to ensure that your application functions well on various screen sizes and devices. This approach enhances user experience across different platforms.

   Minimize HTTP Requests: Reduce the number of HTTP requests by combining files (like CSS and JavaScript) and using image sprites. This can significantly improve loading times.

   Leverage Browser Caching: Implement caching strategies to store frequently accessed resources, which can speed up load times for returning users.

   Test Across Multiple Browsers: Regularly test your application on various browsers (like Chrome, Firefox, Safari, and Edge) to identify and fix compatibility issues early in the development process.

   Optimize Images and Assets: Use appropriate image formats and compression techniques to reduce file sizes without compromising quality, which can enhance loading speed.

   Utilize Best Application Development Services: Partner with experts who provide the best application development services to incorporate performance monitoring and optimization tools into your development workflow.

By following these practices, developers can create robust applications that not only perform well but also deliver a consistent experience across different browsers. Engaging with the community to share insights and experiences can further enhance our collective understanding of effective application development strategies.

Hello there,

Recently I have upgrade my OS from Ubuntu 22.04 to 24.04, but while I logged in my firefox account to recover my bookmarks & settings, I can't find them. How to recover my bookmarks?

Don't know how, but I deleted Firefox on my desktop. Re-downloaded it on my computer and signed into my acct. But how do I get my NUMEROUS web bookmarks and folders w/ web bookmarks back? I still have everything on my phone app, but if try to sync I think my phone will just get what my computer now has which is nothing.

Dave N.

The verification mode that accompanies the payment page keeps asking me to match images. I do that if the version of the matching image is exactly the same as the one given. However, if the version is different--eyeballs, nose, mouth--then I don't match it. What am I supposed to do to get through this verification mode and make my payment in order to complete my order.

I opened up firefox to see that all my passwords disappeared, I've tried syncing, and following this article (https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update), but still nothing. I can see in my firefox profile file that there are logins.json-4.corrupt files, but I don't know what to do from here. Please can someone help? (Also please be explain step by step simply)

I just installed Firefox on a new device and wanted to set it up to mirrow my Firefox setup on another device. On this other device, I use both Firefox and Chrome, but I keep them separate, so that Chrome is associated with my Google account and Firefox with my work/professional account. When I installed Firefox on my new device, it defaulted to using bookmarks from my Chrome account somehow. Thinking I could inherit the correct bookmarks from Firefox on my old device, I turned on Sync for my new Firefox. But this had the opposite effect: it sent the Chrome bookmarks from my new Firefox to the Firefox on my old device. I even have a third device running Firefox in the same framework as my old device (so, Firefox=professional, Chrome=personal/Google), and this third device also automatically acquired the Chrome bookmarks from the Firefox on my new device.

How do I fix this? How do I recover the Firefox bookmarks (my non-Google Chrome bookmarks)? Thank you!

So today i did a format on my PC when i go to Firefox i log in with Mozilla account but i don't remember my password so i reset it with a message to my mail but i didn't have a recovery key, i haven't used this function never and i swear that the last time i did this and logged in everything was perfect. After because i freaked out ofc i try to log in with my google account and because i assume the fresh sync got through poof nothing at all. As far as i understand i lost all my bookmarks,history, browser settings etc since i am only on 1 PC and i can't access them ever again is that correct? Is there a way to actually get my browser back to where it was before i essentially formatted my PC without doing everything by hand

Recently I installed firefox again after install new windows. But I lost my old sync details. How can I get my old sync details. I would like to get backup before 2 days ago. I want my old backup.

I often use the Sync function to bring open tabs over from my smartphone to my desktop computer. I have noticed over the past month or so, this functionality has become increasingly unreliable and sometimes does not function at all. At the moment I have no synced tabs showing on my desktop. I have signed out and back in to Mozilla on both my smartphone and desktop multiple times, checked the sync settings, and nothing seems to resolve this. There have been a couple Firefox updates on both the desktop and mobile side, none of which have changed this behavior.

Has anyone else been experiencing this? What other trouble shooting steps can I perform? Any help is much appreciated.

Desktop FF version: v131.0 Mobile FF version (Android): v130.0.1

Every time I try to sign in into my FF account in the browser it fails to connect to sync.

I get to the sign-in stage, it already knows my email so I'm prompted to put in my password then it sends me an email with code which I put in then I am prompted to put in my 2FA. I get signed in on a separate Mozilla accounts page but when I click on the Account icon in the top right in my browser and sync starts it immediately fails and says "Account Disconnected". I noticed that this started happening after I updated my email/updated Firefox to 131.0 (64-bit) Windows. Not sure if any of it is related.

I have tried various things like:

1. Logging in and out (multiple times) 2. Refreshing Firefox 3. Checking that I am not always using Privacy Mode (I was not) 4. Changing Profiles, changing default profiles 5. Reinstalling Firefox

Nothing solves the problem. I am now unable to see any of my bookmarks or anything from my profile because sync never works. I want to add that this is NOT a problem on Android. The issue happens only on my desktop FF installation.

"I logged into Firefox on my new device, but none of my tabs, passwords, or other data transferred over. Since my old computer is completely unusable, I'm not sure how to recover my Firefox data. Any advice on how I can get everything back?"

Hello, im having issue with desync. I had to click "reset password" after disc format, because i forgot password and firefox desynced permanently. How can I resync old profile?

Hallo!

Tenho a preocupação de aprender maneira de configurar uma senha no alleinstark@yahoo.com e a mesma

não ser perdida, o que vem acontecendo desde o inicio de 2024.

Ich danke Ihnen herzlich für alles! 30/09/2024 Darcy Larangeira