{}DevToolHub

Free developer tools that respect your privacy

Free online developer tools: JSON, SQL, YAML, XML formatters, encoders, generators and more. Everything runs in your browser — no data ever leaves your machine.

Text & Data

J

JSON Formatter & Validator

Format, validate and minify JSON instantly.

X

XML Formatter

Pretty-print and minify XML documents.

Y

YAML Formatter & Validator

Format YAML and convert between YAML and JSON.

SQL & Database

S

SQL Formatter

Beautify SQL queries for any dialect.

Encoding & Security

H

Hash Generator (MD5, SHA-1, SHA-256, SHA-512)

Compute MD5, SHA-1, SHA-256 and SHA-512 hashes of text.

B

Base64 Encode / Decode

Encode text to Base64 or decode Base64 back to text.

U

URL Encode / Decode

Percent-encode or decode URL components.

J

JWT Decoder

Decode JWT header and payload without a server round-trip.

H

HTML Escape / Unescape

Escape HTML entities or unescape them back to raw text.

Generators

C

Cron Expression Parser

Explain cron expressions in plain English and list upcoming runs.

U

UUID Generator

Generate random UUID v4 identifiers in bulk.

C

Color Converter

Convert colors between HEX, RGB and HSL.