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JASON (JSON Manager) version history - 2 versions

JASON (JSON Manager) by StefanoStem

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JASON (JSON Manager) version history - 2 versions
  • Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.

  • Latest version

    Version 1.1.1

    Released Mar 7, 2026 - 44.4 KB
    Works with firefox 140.0 and later
    ersion 1.1.1

    New in this release:
    • Undo / Redo — Ctrl+Z / Ctrl+Shift+Z, full history per tab
    • Minify — collapse JSON to one line (toolbar button or Ctrl+Shift+M)
    • Download — save the current snippet as a .json file
    • Duplicate — clone the current tab into a new tab
    • Folding — collapse and expand JSON objects/arrays with gutter arrows
    • Light / Dark theme — toggle with the sun/moon icon, persists across sessions
    • Real-time size indicator — byte count in the status bar updates as you type
    • In-flight validation — JSON is validated every 500 ms while editing
    • Tabs and content persist when closing and reopening the sidebar

    Bug fixes:
    • Fixed invisible editor content after deleting all text
    • Fixed ghost text from placeholder node appearing in the editor
    • Fixed broken Ctrl+Shift+Z redo after certain edit sequences
    • Fixed sidebar losing content between sessions

    Source code released under MIT License

    Download Firefox and get the extension
    Download file
  • Older versions

    Version 1.0.1

    Released Feb 18, 2026 - 36.14 KB
    Works with firefox 140.0 and later
    v1.0.1 – Bug fixes
    Cursor no longer jumps to the start while typing
    Enter inserts one new line and moves the cursor correctly
    Typed and pasted text is no longer lost
    Pasting JSON and plain text works reliably

    Source code released under MIT License

    Download file
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