JASON (JSON Manager) version history - 2 versions
JASON (JSON Manager) by StefanoStem
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 KBWorks with firefox 140.0 and laterersion 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 sessionsSource code released under MIT License
Older versions
Version 1.0.1
Released Feb 18, 2026 - 36.14 KBWorks with firefox 140.0 and laterv1.0.1 – 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 reliablySource code released under MIT License