Free Tools

Programming Language Tools

Format, convert, and inspect JavaScript, PHP, and Python code - plus generic code utilities and JSON-to-code converters.

23 tools in this category

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SSL Tools 3 DNS Tools 12 Domain Tools 12 Website Tools 19 Security Tools 10 Email Tools 8 Performance Tools 10 SEO Tools 12 API & Developer Testing Tools 17 Git & GitHub Tools 18 DevOps Tools 16 Linux & System Administration Tools 17 Database & SQL Tools 20 AWS & Cloud Tools 16 Kubernetes Tools 14 Programming Language Tools 23 Frontend / CSS Tools 20 Image / SVG Developer Tools 18 Security & Authentication Tools 14 File & Data Conversion Tools 20 Data / Number / Computer Science Tools 19 Software Version / Package Tools 9 Developer Documentation / Project Tools 11 Byte Array Tools 17 Text & Writing Tools 28 Finance & Loan Calculators 20 PDF Tools 16 Image Editing Tools 12

JavaScript Minifier

Instantly compact JavaScript by removing unnecessary whitespace, right in your browser.

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JavaScript Formatter

Format and beautify JavaScript with consistent indentation, entirely in your browser.

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JS Escape/Unescape

Escape a string for safe use inside JavaScript source, or unescape an already-escaped stri...

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JS Object Viewer

Paste a JavaScript object literal or JSON and view it as an interactive, collapsible tree...

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JS Regex Tester

Test a JavaScript regular expression against sample text and see matches, groups, and flag...

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PHP Formatter

Format and beautify PHP code with consistent indentation, entirely in your browser.

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PHP Array to JSON

Convert a PHP array literal into valid JSON.

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JSON to PHP Array

Convert JSON into an equivalent PHP array literal, ready to paste directly into PHP code.

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PHP var_dump Formatter

Paste raw PHP var_dump() output and get it displayed in a clean, readable, indented format...

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PHP Serialized Data Decoder

Safely decode PHP's serialize() string format into readable structured data - never execut...

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Python Formatter

Format and re-indent Python source code consistently, entirely in your browser.

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Python JSON Formatter

Format JSON or Python dict-literal syntax (single quotes, True/False/None) into clean, sta...

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Python Requirements Generator

Build a requirements.txt file from package names and version constraints.

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Python Package Name Checker

Check whether a name follows valid PyPI package-naming syntax rules - this checks naming r...

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Code Indentation Tool

Re-indent code using a configurable number of spaces or tabs.

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Code Line Counter

Count total, blank, non-blank, and comment lines in any pasted code.

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Code Comment Remover

Strip common single-line and block comments from code in several languages - pattern-based...

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Code Beautifier

A multi-language code beautifier - choose JavaScript, CSS, HTML, JSON or C-style code (PHP...

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Code Minifier

Minify CSS and C-style code such as JavaScript, PHP and Java - comments and unnecessary wh...

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Code to JSON

Convert a loosely-formatted object/array literal (unquoted keys, single quotes, trailing c...

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JSON to TypeScript

Generate a TypeScript interface from JSON, inferring property types automatically.

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JSON to Python

Convert JSON into an equivalent Python dict/list literal, ready to paste directly into Pyt...

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JSON to JavaScript

Convert JSON into a JavaScript object/array literal, ready to paste directly into JS code...

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Small Utilities for Everyday Code

Not every task deserves a new dependency. These tools handle the quick jobs - tidying a snippet, testing a pattern, converting data into code - directly in your browser, so the code you paste never leaves your device.

By Language

JavaScript: tidy code with the JavaScript Formatter, test patterns with the JS Regex Tester, escape strings with JS Escape/Unescape, and explore nested data with the JS Object Viewer.

PHP: format code with the PHP Formatter, make var_dump output readable with the var_dump Formatter, decode stored values with the PHP Serialized Data Decoder, and convert between PHP arrays and JSON.

Python: use the Python Formatter, Python JSON Formatter and Python Requirements Generator.

From JSON to Code

Paste an API response and get types or literals with JSON to TypeScript, JSON to Python or JSON to JavaScript. General helpers such as the Code Line Counter and Code Comment Remover work with most languages.