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Developer Tool Guides by Language

Every programming language has its own ecosystem of libraries and conventions for common tasks like formatting JSON, encoding Base64, generating hashes, or converting between data formats. Instead of searching through scattered documentation, our language-specific guides give you copy-paste code examples with the recommended library, installation commands, and practical tips — all in one place.

Browse 200 guides across 10 programming languages below. Each guide pairs one of our free online tools with its programmatic equivalent, so you can use the browser tool for quick tasks and the library for automated workflows, CI/CD pipelines, and production code.

Whether you are a Python developer formatting API responses, a Go engineer building microservices, or a PHP developer working with WordPress — you will find a guide tailored to your stack. Click any guide to get started with working code in under a minute.

Python (20)JavaScript (20)TypeScript (20)Java (20)C# (20)PHP (20)Go (20)Ruby (20)Rust (20)Swift (20)

Python

A versatile, high-level language popular for web, data science, and scripting

JSON FormatterRegex TesterBase64 Encoder/DecoderHash GeneratorUUID GeneratorURL Encoder/DecoderUnix Timestamp ConverterCSV to JSON ConverterYAML to JSON ConverterXML to JSON ConverterMarkdown to HTML ConverterHTML Encoder/DecoderJWT DecoderPassword GeneratorCSS MinifierJavaScript MinifierHTML MinifierSQL FormatterColor ConverterImage Compressor

JavaScript

The language of the web, running in browsers and on servers via Node.js

JSON FormatterRegex TesterBase64 Encoder/DecoderHash GeneratorUUID GeneratorURL Encoder/DecoderUnix Timestamp ConverterCSV to JSON ConverterYAML to JSON ConverterXML to JSON ConverterMarkdown to HTML ConverterHTML Encoder/DecoderJWT DecoderPassword GeneratorCSS MinifierJavaScript MinifierHTML MinifierSQL FormatterColor ConverterImage Compressor

TypeScript

A typed superset of JavaScript that compiles to plain JS

JSON FormatterRegex TesterBase64 Encoder/DecoderHash GeneratorUUID GeneratorURL Encoder/DecoderUnix Timestamp ConverterCSV to JSON ConverterYAML to JSON ConverterXML to JSON ConverterMarkdown to HTML ConverterHTML Encoder/DecoderJWT DecoderPassword GeneratorCSS MinifierJavaScript MinifierHTML MinifierSQL FormatterColor ConverterImage Compressor

Java

A robust, object-oriented language for enterprise and Android applications

JSON FormatterRegex TesterBase64 Encoder/DecoderHash GeneratorUUID GeneratorURL Encoder/DecoderUnix Timestamp ConverterCSV to JSON ConverterYAML to JSON ConverterXML to JSON ConverterMarkdown to HTML ConverterHTML Encoder/DecoderJWT DecoderPassword GeneratorCSS MinifierJavaScript MinifierHTML MinifierSQL FormatterColor ConverterImage Compressor

C#

Microsoft's modern language for .NET, Unity, and enterprise apps

JSON FormatterRegex TesterBase64 Encoder/DecoderHash GeneratorUUID GeneratorURL Encoder/DecoderUnix Timestamp ConverterCSV to JSON ConverterYAML to JSON ConverterXML to JSON ConverterMarkdown to HTML ConverterHTML Encoder/DecoderJWT DecoderPassword GeneratorCSS MinifierJavaScript MinifierHTML MinifierSQL FormatterColor ConverterImage Compressor

PHP

A server-side scripting language powering most of the web including WordPress

JSON FormatterRegex TesterBase64 Encoder/DecoderHash GeneratorUUID GeneratorURL Encoder/DecoderUnix Timestamp ConverterCSV to JSON ConverterYAML to JSON ConverterXML to JSON ConverterMarkdown to HTML ConverterHTML Encoder/DecoderJWT DecoderPassword GeneratorCSS MinifierJavaScript MinifierHTML MinifierSQL FormatterColor ConverterImage Compressor

Go

Google's fast, statically typed language built for cloud and system tools

JSON FormatterRegex TesterBase64 Encoder/DecoderHash GeneratorUUID GeneratorURL Encoder/DecoderUnix Timestamp ConverterCSV to JSON ConverterYAML to JSON ConverterXML to JSON ConverterMarkdown to HTML ConverterHTML Encoder/DecoderJWT DecoderPassword GeneratorCSS MinifierJavaScript MinifierHTML MinifierSQL FormatterColor ConverterImage Compressor

Ruby

An elegant, developer-friendly language known for Rails web framework

JSON FormatterRegex TesterBase64 Encoder/DecoderHash GeneratorUUID GeneratorURL Encoder/DecoderUnix Timestamp ConverterCSV to JSON ConverterYAML to JSON ConverterXML to JSON ConverterMarkdown to HTML ConverterHTML Encoder/DecoderJWT DecoderPassword GeneratorCSS MinifierJavaScript MinifierHTML MinifierSQL FormatterColor ConverterImage Compressor

Rust

A systems language focused on safety, speed, and concurrency

JSON FormatterRegex TesterBase64 Encoder/DecoderHash GeneratorUUID GeneratorURL Encoder/DecoderUnix Timestamp ConverterCSV to JSON ConverterYAML to JSON ConverterXML to JSON ConverterMarkdown to HTML ConverterHTML Encoder/DecoderJWT DecoderPassword GeneratorCSS MinifierJavaScript MinifierHTML MinifierSQL FormatterColor ConverterImage Compressor

Swift

Apple's modern language for iOS, macOS, and server-side development

JSON FormatterRegex TesterBase64 Encoder/DecoderHash GeneratorUUID GeneratorURL Encoder/DecoderUnix Timestamp ConverterCSV to JSON ConverterYAML to JSON ConverterXML to JSON ConverterMarkdown to HTML ConverterHTML Encoder/DecoderJWT DecoderPassword GeneratorCSS MinifierJavaScript MinifierHTML MinifierSQL FormatterColor ConverterImage Compressor

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