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Developer Tools - Free Online

Developers Development related helping tools HTML, CSS, JavaScript minifier, beautifier, formatter, JavaScript hint and lint related tools will be here.

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常用工具

Use free Developer tools online - fast, private, no signup. Works in your browser on Newisty.

Accurate MIME Type Checker Online

Check a file's browser-reported MIME type, size and date loc...

Anonymous Email Sender

Send a quick anonymous email through a backend proxy. No acc...

n8n Workflow Toolkit

Inspect an n8n workflow export in your browser: node statist...

JSON YAML TOML Converter

Convert JSON, YAML and TOML online in all six directions wit...

Text Diff Checker

Compare two versions of any text line by line and see exactl...

.ENV Beautifier

Tidy a .env file: one key per line, no stray spaces, normali...

XML Minifier

Minify valid XML by removing indentation and whitespace-only...

YAML Formatter

Format YAML with two-space indentation and block collections...

XML Beautifier

Format XML with two-space indentation, one element per line...

TOML Beautifier

Format and beautify TOML configuration files online. Clean u...

SQL Formatter

Beautify or minify SQL in one click. Indent clauses for revi...

PHP Minifier

Minify PHP code online with PHP's php_strip_whitespace(). Pa...