Free browser-based dev tools

20 tools, no upload, no signup. Everything runs client-side.

converters

Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 back to text.

CSV to JSON Converter

Convert CSV to JSON instantly in your browser.

CSV to TSV Converter

Convert comma-separated data to tab-separated format.

HEX to RGB Converter

Convert colors between HEX codes and RGB values.

JSON to CSV Converter

Convert a JSON array of objects to CSV in your browser.

JSON to YAML Converter

Convert JSON to YAML instantly in your browser.

Markdown to HTML Converter

Convert Markdown to clean HTML markup.

TOML to JSON Converter

Convert TOML config files to JSON in your browser.

Unix Timestamp Converter

Convert Unix timestamps to dates and dates to epoch time.

URL Encoder/Decoder

Percent-encode text for URLs or decode it back.

XML to JSON Converter

Convert XML documents to JSON in your browser.

YAML to JSON Converter

Convert YAML to JSON instantly in your browser.

devops

Cron Expression Generator

Build and understand cron expressions visually.

Decode JWT header and payload without verification.

formatters

JSON Formatter & Validator

Format, beautify, and validate JSON in your browser.

Strip whitespace from JSON to shrink its size.

Pretty-print and validate XML in your browser.

validators

Test regular expressions against sample text live.

Check YAML syntax with line and column error reporting.

generators

Generate one or many random UUID v4 identifiers.