Dev Tools

JSON, Base64, regex and developer utilities

22 tools available

hot

JSON Formatter

Format, validate and beautify JSON data

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Base64 Encoder/Decoder

Encode and decode Base64 strings instantly

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URL Encoder/Decoder

Encode and decode URL components

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JWT Decoder & Debugger

Decode and inspect JWT token payloads to debug authentication and security claims

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UUID Generator

Generate unique UUIDs and GUIDs

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Hash Generator

Generate MD5, SHA-1, SHA-256 hashes

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Regex Tester

Test and debug regular expressions live

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CSS Minifier

Minify CSS code to reduce file size

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JS Minifier

Minify JavaScript code for production

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Color Converter

Convert HEX, RGB, HSL color formats

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Gradient Generator

Create and export CSS gradients visually

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beta

Cron Expression Generator

Build and explain cron job expressions

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.gitignore Generator

Generate .gitignore for any tech stack

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beta

API Tester

Test REST APIs with custom headers and body

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Code Formatter

Reformat raw code into a cleaner readable block

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HTML Previewer

Preview markup inside a live render panel

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SQL Formatter & Beautifier

Format raw SQL queries into clean, readable blocks for database debugging and documentation

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CSS Gradient Generator

Create beautiful CSS gradients with a visual editor

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HTML to Markdown

Convert HTML code to clean Markdown format instantly

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JSON to CSV Converter

Transform JSON data into downloadable CSV spreadsheets

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Cron Expression Generator

Build and test cron expressions with a visual scheduler

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Markdown Previewer

Write Markdown and preview the rendered output in real time

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Category guide

What you can do with dev tools

JSON, Base64, regex and developer utilities These tools are built for quick browser-based workflows, so you can finish common tasks without installing extra software or creating a public account.