Opening a JSONLZ4 File

The JSONLZ4 file type is primarily associated with Firefox.

JSONLZ4	File extension: JSONLZ4
	File type:	compressed Firefox bookmarks backup file

What is a JSONLZ4 file?

JSONLZ4 files mostly belong to Firefox by Mozilla. The JSONLZ4 extension is used for files that store compressed bookmarks saved by individual user profiles on the Mozilla Firefox web browser. The JSONLZ4 is an open-source format based on the JSON (JavaScript Object Notation) file format. Similarly to JSON, it is used for storing data and other objects in a standard data interchange format. It uses the LZ4 (Lempel-Ziv) compression to reduce the size of the file.

• Data Recovery: The JSONLZ4 can be used to recover lost bookmarks if the data related to the bookmarks are deleted during version updates. The data are available in the /bookmarkbackups" folder in the Firefox user profile directory. The date of creation of the file can be obtained by checking the name of the file in the JSONLZ4 format.
• Popularity: The JSON and JSONLZ4 are generally useful for Ajax Web application programming. While the JSON data format is fast gaining popularity as an alternative to the XML data format, JSONLZ4 has no usage outside Firefox.

How to open JSONLZ4 files

You need a suitable software like Firefox from Mozilla to open a JSONLZ4 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your JSONLZ4 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a JSONLZ4 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online JSONLZ4 File Viewer

Choose your .jsonlz4 file to view

or drag and drop it here

Online File Viewer

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How to extract texts from JSONLZ4 files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

1. To do this, click the button "Choose your .jsonlz4 file to view" on this page.
2. After your file is opened in browser,
3. click "Save as..." in the menu.
4. Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
5. Download the converted file.

JSONLZ4 file format:

The file format, which is the arrangement and type of data in a file, determines which program can open the file. Often, the file format can be deduced from the file extension or the initial bytes (called the signature). If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our analysis of the JSONLZ4 files produces the following result:

The JSONLZ4 extension is very commonly found and mainly uses a special format. The file formats most commonly found in JSONLZ4 files are:

• 95% of all JSONLZ4 files belong to Mozilla mozLz4 compressed data. These files are not pure binary files and are therefore readable and interpretable with a text editor. JSONLZ4 files are between 1 KB and 200 KB in size. This file type is based on cutting-edge technology. The files contain the following words: mozLz40, title, index, dateAdded, sRoot","children":[, {"guid":"root_, lastModifi, ":"text/x-moz-place-container", Cmenu, 1,"typeCode":2 and version. A usual file name is previous.jsonlz4. Files like these are about bookmarks, recovery, event, sessionstore, modules, party, third, shutdown and first.

All other JSONLZ4 files (5%) have no consistent format. Tagged as health, profile, upgrade, bebd, cfbf or sync. Just click the "Choose your .jsonlz4 file to view" button on this page to find out what your JSONLZ4 file is.