JSON viewer for Mac.

Opens a 1 GB file on Apple Silicon in about 0.3 seconds, where Quick Look declines to preview it at all.

Build 4220bb3 · Jul 2026 ·

Requirements

macOS 14 (Sonoma) or newer, Apple Silicon. Native arm64, so nothing runs through Rosetta. Intel Macs are not supported.
Signed and notarized by Apple, so the .dmg opens normally, no Gatekeeper warning and no right-click-then-Open.
Install: open the .dmg and drag jsonbolt to Applications. No administrator password needed.
The jb CLI is bundled inside the app, useful over SSH. See the CLI reference.
Clipboard shortcut: ⌃ ⌥ J opens whatever JSON you last copied.

Free for personal use · commercial seats are $89 per year · see the benchmarks or the GUI guide.