JSON Viewer
That doesn't
choke

jsonbolt is a hardware-accelerated JSON viewer. Drop a 1 GB JSON file on it. The tree is open before your finger leaves the trackpad.

Download for Windows
2GB/s Parse throughput
50ms First paint, 100MB
20Million/s Search results
1:1 RAM usage
— The race

Open a 1 GB file.
Watch the rest catch up.

Same machine. Same file. Same goal: open it and let me search. We waited so you don't have to. Times measured to first usable tree on a M2 Pro / 32 GB.

10MB 41,829 records
100MB 418,299 records
1GB 4,182,990 records
Apple M2 Pro · 32 GB · macOS 14.4 · 30 s timeout · cold cache Updated 2026-04-12
Built for huge files

Tools that don't flinch
when the file gets big.

01 / VIRTUAL TREE

Expand 100M nodes.
Render only 60.

Drop a 1 GB API dump and start clicking. No load bar, no freeze.

Virtualized tree renders just the visible rows. Scrolling stays at native refresh rate, no matter how deep the document goes.

02 / SEARCH

Search 9-figure files
without breaking a sweat.

Find every order over $1,000 across 12M records in a second.

SIMD-accelerated regex, basic and key-value search capable of processing files at 1 GB/s and generating tens of millions of matches per second. No other tool comes close.

03 / URL

Paste a URL.
See the tree.

Skip the curl, skip the jq. Paste the URL.

Drop any JSON endpoint in and the response lands in the tree like a local file. Save auth headers for the APIs you keep hitting.

04 / LIVE

Tail JSON like
a logfile.

Open it once. Watch it fill up.

jsonbolt re-reads the file as it grows. New rows show up at the bottom, your scroll holds, your search keeps highlighting. Mostly for NDJSON logs that won't sit still while you read them.

05 / EXPORT

From JSON
to XML or CSV.

Highlight what you want. Pick a format.

Pick a subtree and save it out as XML or CSV. Where you'd normally reach for jq plus a one-liner — except you see what you're grabbing before you commit.

06 / HARDWARE ACCELERATION

SIMD on the CPU.
Layout on the GPU.

Stay in flow. Slow tools break it.

A SIMD parser that runs bytes through AVX2. Tree layout, scrolling hit a WGPU pipeline. Open multi-gigabyte files in seconds.

— Command line

CLI for your AI Agents
and automation.

Same JSON engine you click on, now in your terminal. Inspect huge JSON files, search by key, value, JSONPath, or type, and extract exact results — without dumping the whole document into your prompt, script, or CI log. Purpose-built for JSON, so scripts and agents can ask smaller, sharper questions.

  • jb schema, jb paths, jb keys reveal structure without value bloat
  • jb search supports key/value search, regex, types, --where, --exists
  • jb get and jb extract pull exact JSON values by path
  • --ai gives bounded JSONL envelopes with {path, preview, value}
  • Stdin, globs, and exit codes make it useful in scripts and CI

Read the CLI docs →

inspect.sh
search.sh
extract.sh
— Get jsonbolt

Stop
waiting.

Free for personal use. One download, no account. The Windows build is signed and notarized and weighs less than a wallpaper.

— Available builds
Windows GUI x64 · win10+
v1.4 · ready
Windows CLI x64 · winget
v1.4 · ready
macOS Universal · 14+
private beta
Linux x64 · deb / rpm / appimage
private beta