JSON & Data
JSON Formatter
Format and beautify JSON online for free.
Browser-side workshop
Shape data.
Ship faster.
Fast, free tools for developers. — a hundred small utilities that run locally, like bench tools in your IDE.
● no signup · free · stays in your tab
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Recently used
The last 6 tools you opened in this browser, newest first.
Popular tools
What developers search for most — JSON, JWT, Base64, regex, UUIDs, timestamps, hashes, and diffs.
JSON & Data
JSON Validator
Check whether a payload is valid JSON.
JWT & Security
JWT Decoder
Decode a JWT header and payload without verifying.
Encoding & Text
Base64 Encoder
Encode text as Base64.
Regex
Regex Tester
Run a regular expression against a string.
IDs & Random Data
UUID Generator
Generate RFC 4122 version 4 UUIDs.
Date & Time
Unix Timestamp Converter
Convert unix time, millis, or date strings.
Encoding & Text
URL Encoder
Percent-encode text for URLs.
JWT & Security
SHA-256 Hash
SHA-256 digest for security payloads.
IDs & Random Data
Password Generator
Generate a random password in your browser.
SQL & Database
SQL Formatter
Indent SQL and uppercase keywords.
Diff
JSON Diff
Compare two JSON documents with path-level changes and a formatted line diff.
Browse by craft
Pick a lane — JSON, Git, security, DevOps — and stay in flow.
JSON & Data
Format, validate, convert, and inspect structured data.
Encoding & Text
Encode, decode, hash, and transform text.
IDs & Random Data
Generate UUIDs, passwords, and random strings.
JWT & Security
Inspect tokens, hashes, and security-related payloads.
Git & GitHub
Helpers for commits, ignores, diffs, and GitHub workflows.
Regex
Test, explain, and escape regular expressions.
Date & Time
Timestamps, timezones, cron, and date math.
SQL & Database
Format SQL and convert between queries and data.
Web & API
HTTP, cURL, URLs, and API payloads.
Docker & DevOps
Compose files, env files, and cluster YAML helpers.
AI
AI-assisted developer tools. Serverless later, never client API keys.
MCP
Inspect, validate, and generate Model Context Protocol configs and schemas.
Diff
Compare JSON, text, YAML, SQL, URLs, and other formats side by side.
Everyday essentials
YAML, cURL, cron, and gitignore — plus JSON Schema, token counts, and MCP configs developers use now.
JSON & Data
YAML → JSON
Convert YAML into JSON.
Web & API
cURL Generator
Build a curl command from JSON.
Date & Time
Cron Expression Explainer
Explain a 5-field cron expression.
Git & GitHub
.gitignore Generator
Build a .gitignore from stack names.
AI
JSON Schema → TypeScript
Generate TypeScript types from a JSON Schema object.
AI
JSON Schema → Zod
Generate Zod schemas from JSON Schema for runtime validation.
AI
Prompt Token Counter
Estimate token count for a prompt without sending it to an API.
MCP
MCP Server Config Generator
Generate MCP server configuration snippets for Cursor, Claude Desktop, and other clients.