Free developer tools · Runs in your browser
Developer tools, carefully arranged.
Format, decode, convert and generate without leaving the tab. Nothing you paste is uploaded. No ads, no sign-up.
/
- Runs
- In your browser. Nothing you paste is uploaded.
- Costs
- Nothing. No ads, no account, no paywall.
- Keys
- ⌘K to jump, ⌘↵ to run, ? for the rest.
01 / Tools
10 tools to start. More on the way.
Format & convert
04- 01JSON formatterPretty-print, minify, validate and compare JSON. Syntax errors point at the exact line and column./json
- 02Diff checkerCompare text or code side by side or inline, with an option to ignore whitespace.Soon
- 03YAML ↔ JSON ↔ XMLConvert between YAML, JSON and XML: Kubernetes manifests, Spring application.yml and SOAP payloads.Soon
- 04JSON to codePaste JSON, get a Java record or Jackson POJO, a TypeScript interface or a Kotlin data class.Soon
Encode & decode
02Time & schedule
02Generate & test
0202 / How it works
Small pages that do one job and get out of the way.
2.1
Nothing leaves your machine
Every tool runs in this tab. Open the network panel while you use one and check.
2.2
Quick to load
Each tool is its own page and loads only the code it needs. No ads and no cookie banner.
2.3
Keyboard first
⌘K jumps to any tool, ⌘↵ runs it and c copies the result. Press ? for the full list.
2.4
Free, with a tip jar
No paywall and no sign-up. If a tool saved you time, you can buy us a coffee once you have your result.