Try the
Updated Version

Bookmark Backup Reader/Decompressor for Firefox

Drag and drop one .jsonlz4 (or .json) bookmark backup file onto the empty text box. () This file is not sent to the network, it is only read within this page in Firefox. Performance Note: Decompressing files and working with large sets of bookmarks is processor intensive, so please be patient. If the fan won't stop running, you can close the tab and launch the document again.

Or open using:

Conversions Available

JSON "Backup" Format:
For files Firefox cannot restore

HTML "Export" Format:  Add indenting (for easier reading)
Currently does not embed icon data.

Note: To try a different file, reload this page (Windows: Ctrl+r. Mac: Command+r. Or click the reload button in the address bar.)

Copyright © 2018 Jefferson Scher (BSD-3-Clause License). lz4.js © 2014 Pierre Curto (MIT License). FileSaver.js © 2016 Eli Grey (MIT License). MDN code samples © Mozilla Contributors or Public Domain (License). escapeHtmlEntities() function from Firefox (MPL 2.0). No claim to your data! [2017-11-17 replaces a blank or 0 added date or last modified date with the current date] Updated 2018-08-18.