v1.0.0 — Shipping soon

30 Developer tools.
One desktop app.
Zero network.

JSON formatting, API testing, regex building, encoding, cron, conversions. All native, all offline, all on your machine. Buy it once.

Download free trial See pricing
14-day trial No card required No subscription
JSON Formatter Offline
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{ "user": {
    "name": "Martijn",
    "active": true
  }
}
Format Valid 4ms
Tools included
30+
Data sent to us
0 bytes
Monthly fee
None
Platforms
3
01 / Why desktop

Web tools ask you to trust them. This one doesn't have to.

01
Runs locally
Native desktop performance. No spinners, no cold starts, no browser memory limits when you paste a 40 MB payload.
02
Nothing leaves
No cloud storage, no telemetry, no analytics. Paste production tokens and customer records without thinking twice.
03
Works offline
Plane, train, locked-down corporate network. Every tool works without a connection — activation is the only online step.
02 / The toolbox

What's in the box

Data
JSON Formatter YAML ⇄ JSON jq Playground CSV Viewer SQL Formatter Diff Viewer
Network
REST API Tester cURL Generator JWT Decoder DNS Lookup Webhook Inspector
Text
Regex Builder Base64 Encode URL Encode Hash Generator Markdown Preview Case Converter
Dev & Time
Cron Parser Timestamp Convert UUID Generator Color Converter Dockerfile Lint + 9 more
Buy it once. Keep it forever.
One payment, lifetime updates, up to three machines. Start with the 14-day trial — no card, no account.
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