Development and data formatting

Developer Tools

Browser-based utilities for structured data, markup, URLs, SQL and code.

25 published tools

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Developer Tools

JSON Formatter & Validator

JSON Formatter & Validator Online — free online tool for json formatter online.

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URL Encoder & Decoder

Encode and decode URLs and percent-encoded text safely in your browser.

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Base64 Encoder & Decoder

Base64 Encoder & Decoder Online — free online tool for base64 encoder online.

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HTML Minifier

HTML Minifier Online — free online tool for html minifier online.

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CSS Minifier

CSS Minifier Online — free online tool for css minifier online.

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JavaScript Minifier

JavaScript Minifier Online — free online tool for javascript minifier online.

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SQL Formatter

SQL Formatter & Beautifier Online — free online tool for sql formatter online.

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SQL Query Validator

SQL Syntax Checker & Query Validator Online — free online tool for sql syntax checker.

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XML Formatter & Validator

XML Formatter & Validator Online — free online tool for xml formatter online.

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YAML Formatter & Validator

YAML Formatter & Validator Online — free online tool for yaml formatter online.

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Markdown Formatter & Previewer

Markdown Formatter & Previewer Online — free online tool for markdown formatter online.

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Regex Tester

Test regular expressions against text with match details and capture groups.

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UUID Generator

Generate random UUID v4 identifiers instantly in your browser.

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Unix Timestamp Converter

Convert Unix timestamps to readable dates and Unix timestamps.

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JSON ↔ CSV Converter

Convert JSON arrays to CSV and CSV data back to JSON.

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JSON Escape & Unescape

Escape JSON strings safely or unescape escaped JSON text.

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HTML Entity Encoder & Decoder

Encode special characters as HTML entities or decode HTML entities back to text.

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JWT Decoder

Decode JWT headers and payloads locally in your browser.

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Cron Expression Generator

Build common cron expressions with a simple visual schedule builder.

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URL Parser

Parse a URL into protocol, host, port, path, query parameters and hash.

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Hash Generator

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text in your browser.

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CSS Gradient Generator

Create linear and radial CSS gradients with live preview and copy-ready code.

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Box Shadow Generator

Design CSS box-shadow effects with live preview and one-click copy.

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Markdown Table Generator

Build Markdown tables quickly and copy GitHub-ready table syntax.

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.htaccess Generator

Generate common Apache .htaccess rules for HTTPS, redirects and caching.

About this category

Free Developer Tools from ToolCraft

Browser-based utilities for structured data, markup, URLs, SQL and code. ToolCraft focuses on clear, browser-based workflows so you can complete common tasks without installing desktop software.

How to choose a tool

Start with the task you need to complete, open the most specific tool, review its instructions and use the related-tool links when your workflow requires another step.