A way to convert your .jsonlz4 to .json valid for 2026?

Hola, he necesitado una forma de convertir un archivo .jsonlz4 a .json de forma online o que ponga en riesgo lo menos posible mi PC (evitando descargar y ejecutar, largos… (hamaky bebe kokoa)

Hola, he necesitado una forma de convertir un archivo .jsonlz4 a .json de forma online o que ponga en riesgo lo menos posible mi PC (evitando descargar y ejecutar, largos código que requieren de herramientas de terceros como Python, etc.), y he encontrado un sitio web que no me ha servido porque mi archivo .jsonlz4 era lo suficientemente grande como para dejar la página web congelada teniendo que esperar una larga cantidad de tiempo), este post es simplemente para ayudar a la comunidad que busca una solución a esto en 2026 (hay una versión de 2015 en el foro que utiliza la inferfaz IFilePicker que ya no funciona en las versiones actuales de Firefox):

  1. Escribe "about:config" en la barra de direcciones de Firefox.
  2. Busca "devtools.chrome.enabled".
  3. Asegúrate de que esté en "true" (doble clic para cambiar si es necesario).
  4. Código que debes pegar en la consola de Firefox (Shift+Ctrl+J):

--- // (Bourdait, 2026) Script de Firefox para convertir archivos .jsonlz4 a .json (descomprimido) desde consola de FF (async () => {

 // 1. Verificar configuración necesaria
 if (!Services.prefs.getBoolPref("devtools.chrome.enabled", false)) {

console.warn("ADVERTENCIA: 'devtools.chrome.enabled' es falso. El selector de archivos podría fallar."); console.warn("Ve a about:config y pon devtools.chrome.enabled en true si tienes problemas.");

 }
 let filePath = null;
 // 2. Selector de Archivos (Intento XPCOM con fallback)
 try {

// Intento utilizar el filepicker nativo (aún funciona en consola privilegiada en muchas versiones) const fp = Cc["@mozilla.org/filepicker;1"]?.createInstance(Ci.nsIFilePicker); if (fp) { // Nota: En versiones muy recientes (FireFox 125+), a veces requiere window.browsingContext try { fp.init(window.browsingContext || window, "Seleccionar archivo jsonlz4", Ci.nsIFilePicker.modeOpen); } catch (e) { fp.init(window, "Seleccionar archivo jsonlz4", Ci.nsIFilePicker.modeOpen); } fp.appendFilter("Archivos jsonlz4", "*.jsonlz4"); fp.appendFilter("Todos los archivos", "*.*"); // Esperar la selección const result = await new Promise(resolve => fp.open(resolve)); if (result === Ci.nsIFilePicker.returnOK && fp.file) { filePath = fp.file.path; } }

 } catch (e) {

console.error("El selector XPCOM falló:", e.message); // Fallback manual filePath = prompt("El selector automático no funcionó. Pega la RUTA COMPLETA del archivo .jsonlz4:", ""); if (!filePath || !filePath.endsWith(".jsonlz4")) return;

 }
 if (!filePath) return;
 const outputFile = filePath.replace(".jsonlz4", "_convertido.json");
 try {

console.log("Leyendo y descomprimiendo:", filePath); // 3. LECTURA Y DESCOMPRESIÓN CORRECTA // IOUtils es global, NO se importa. // El truco está en la opción { decompress: true } const content = await IOUtils.readUTF8(filePath, { decompress: true }); console.log("Guardando archivo JSON:", outputFile); // 4. ESCRITURA DEL ARCHIVO await IOUtils.writeUTF8(outputFile, content); console.log("Archivo guardado en:", outputFile); alert("Conversión completa.\nArchivo guardado en:\n" + outputFile); // Opcional: Abrir el resultado en una nueva pestaña const fileObj = Services.io.newFile(Services.io.newFile(outputFile)); // Corrección de ruta // Método más seguro para abrir archivo local en Firefox moderno: const url = Services.io.newFileURI(Services.io.newFile(outputFile)).spec; window.open(url, "_blank");

 } catch (err) {

console.error("Error crítico:", err); alert("Error al procesar el archivo:\n" + err.message + "\n\nAsegúrate de que la ruta es correcta y el archivo no está corrupto.");

 }

})(); ---

NOTA: Aunque el script muestre algún error comprueba el archivo, a veces aparece algún error pero ha convertido el archivo perfectamente.

La única intención de compartir el script es ayudar a otros y hacer crecer la comunidad.

Un saludo.

Open

I have Javascript active in my settings.Yet.Every time I try to open something it says Javascript is not active.And it's necessary for this application or whatever to run

So what exactly should I do to rectify this problem . I just to reiterate the problem is that applications will not open when I try to open them.Because it says the Javas… (hamaky bebe kokoa)

So what exactly should I do to rectify this problem . I just to reiterate the problem is that applications will not open when I try to open them.Because it says the Javascript is not running.Yeah, my setting.It says it is everything is updated and up to date so i'm lost on what to do.

Open

Cannot log in to X.com

Content Security policy blocks essential scripts no matter what I do. It's new Firefox installation, Troubleshoot mode, Enhanced tracking disabled, I'm not on VPN, can lo… (hamaky bebe kokoa)

Content Security policy blocks essential scripts no matter what I do.

It's new Firefox installation, Troubleshoot mode, Enhanced tracking disabled, I'm not on VPN, can log into X.com in another browser just fine.

It's the reason #1 I don't use Firefox. I thought the issue would be fixed but it has been like this for long time.

Yet whatever I do, whatever I turn off this pops up:

Content-Security-Policy: The page’s settings blocked the loading of a resource (default-src) at https://abs.twimg.com/responsive-web/client-web/bundle.Conversation.721fc4aa.js because it violates the following directive: “default-src 'self'”

The screenshot is from Zen, but it uses Firefox and the issue is the same in Firefox.

Open

Widgets does not have Indian Standard Time

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India operates on a unique UTC+5:30 time zone used by over 1.4 billion people, making it one of the most widely used time zones globally. The absence of IST while neighbouring time zones are available feels like a major oversight and reduces the usefulness of the widget for Indian users and anyone who regularly works with Indian colleagues, clients, friends, or family.

Please add Indian Standard Time (IST) to the World Clock widget as a standard option. Its inclusion would greatly improve the widgets global coverage and usability.

Open 2

lost browsing and download history

I couldn't log into a site and it was suggested to 'clear cache' as follows: - settings - privacy and security - cookies and site data - clear browsing data BUT only cook… (hamaky bebe kokoa)

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Open 2

"Firefox is not opening on Windows 11."

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My Mozilla Firefox browser is not working. It does not open when I try to start it. I have restarted my computer, but the issue still persists. Please help me fix this problem.

Open

Lose all passwords & sometimes my bookmarks on desktop firefox . Android phone still has them all. Afraid to sync, in case erases all on phone!

I recovered them once by choosing a different default profile. Then the next time I opened Firefox both the saved profiles had no passwords. I can find the referred file… (hamaky bebe kokoa)

I recovered them once by choosing a different default profile. Then the next time I opened Firefox both the saved profiles had no passwords.

I can find the referred files on the desktop, but don't see real steps on what to do with them, and if they're the ones in the now password list-less profiles they will be useless anyway.

I really don't know what to do. It seems every time I open Firefox it updates and half the time I lose all my bookmarks, all the time I have no passwords. Right now I have bookmarks but no passwords on the desktop. I have everything on the Android phone only.

I'm on Windows 10 still on the desktop, but my windows 11 surface pro 8 now seems to have lost passwords, too!

Is there a way to download and not lose anything, then import back to desktops?

I'm afraid to sync, in case the desktop takes precedence and erases all my passwords on my phone!

Open

How do I restore my page layout?

My cat stepped on my keyboard and now my top bar with my tabs is only accessible when I mouse up to the top, and my taskbar is hidden entirely and can only be seen if I d… (hamaky bebe kokoa)

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"Clear cookies and site data" option disabled on container tabs

It seems that after a recent Firefox version update (perhaps to 151.0.3), the "Clear cookies and site data" option is disabled for any container tab. This is really annoy… (hamaky bebe kokoa)

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Open

Firefox Image Display Problem with Grok / xAI Chat

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Firefox Image Display Problem with Grok / xAI ChatI'm using:Dell computer Windows 10 Firefox (latest version)

Problem: Grok-generated images (graphs, memes, translated election charts, etc.) do not appear at all in the chat. I only see blank spaces or broken image icons. Right-click → "Open Image in New Tab" and Ctrl+Shift+R (hard refresh) do not work.This issue started during a long conversation where Grok was creating multiple JPG versions of an election results graph with translated text.Note: The same images load fine in other sessions/browsers, but I prefer to stay with Firefox.Is this a known compatibility issue with Grok's image rendering system in Firefox? Any settings, extensions, or workarounds (without switching to Chrome or Edge) that can fix it?

Problem description generated by Grok

Open

Troubles with passkeys in Microsoft password manager, not Windows Hello. (I was denied supporting from Windows OEM vendor also)

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I asked about troubles with passkeys in Microsoft password manager, not Windows Hello. The question was denied. https://support.mozilla.org/en-US/questions/1585824

I am only a home PC customer and have Windows OEM vendor's support only. It supports operation mises about Windows OS and preinstalled applications, but doesn't support Windows's bug trouble shootings. I was denied supporting from FUJITSU CLIENT COMPUTING LIMITED (known as a Japanese company, but a subsidiary of Lenovo now). I copied the raw Japanese text to avoid my failure of translating.

==

パスキーのご利用について、お問い合わせをいただいております。

はじめに、恐れながら弊社では、出荷時に搭載されている OSおよび、一部のアプリについてのみ、動作確認をしております。

そのため、[Firefox]については情報を有しておらず、具体的な ご案内を差し上げることが困難です。

[Microsoft Edge]でご希望の操作が可能な場合は、こちらで ご利用いただくことをご検討ください。

なお、[Microsoft Edge]でも同様に問題が生じている場合は、 お手数ですが、[Microsoft Edge]で発生している状況や、 実施されたい作業の内容についてお書き添えいただき、再度 FMVテクニカルセンター(メールサポート)へご連絡くださいますよう お願いいたします。

==

By the answer, I lost any support about trouble shooting.

I ask questions. Have Firefox development team previously confirmed that it works? Does you have Bugzilla ID about functionality check with passkeys in Microsoft password manager or something like it?

Open

Unable to complete authentication process in attempting to login to VA Health

Using "https://www.va.gov/sign-in/?application=mhv&oauth=false&to=home" unable to login to VA Department of Veterans Affairs. Neither ID.me or Login.gov authentic… (hamaky bebe kokoa)

Using "https://www.va.gov/sign-in/?application=mhv&oauth=false&to=home" unable to login to VA Department of Veterans Affairs. Neither ID.me or Login.gov authentication will allow login. Using either of the latter, the authentication process just cycles continuously. Diagnostics included clearing cache and rebooting Firefox version 151.0.3. OS is W10. However, I was successful using Chrome. Problem began about 5 June.

Open

bookmarks that i save on firefox android ar not syncing to firefox desktop

please tell me how to solve the problem in the one sentence i was asked to provide. i have tried syncing from both devices and have disconnected and reconnected to se if … (hamaky bebe kokoa)

please tell me how to solve the problem in the one sentence i was asked to provide. i have tried syncing from both devices and have disconnected and reconnected to se if that helps, nope. i have no problem syncing bookmarks from desktop to android but the other way around is not working

Open