Best Code Formatter Products in 2026

Privacy-first developer workspace for formatting, querying, validating, repairing, comparing, and converting JSON and raw code locally in Chrome, Edge, and Windows.

Key CodePrettify by FixQuotes features:

Free to Use Multi-Language Support Simple and Fast Interface No Installation Required

free

Automated AI security testing for agents, chatbots, and APIs. Find prompt injection, data leaks, and unsafe behavior before launch.

Key PromptBrake features:

AI Security Testing Supported Targets CI Release Gates Self-Hosted Execution

Try for free paid Free Trial $499 / Monthly (Enterprise: 30 scans, 1 active runner license) Sponsored

Free online Java formatter and code beautifier.

Key JavaFmt features:

Browser-based Private by design Java conventions Works anywhere

free

A Web-Based Tool for Code Formating, Conversion, and Minification .

Key Ubercompute features:

Pug to Html Converter Javascript to Coffeescript Sass to Css

Online Tools like Beautifiers, Editors, Viewers, Minifier, Validators, Converters for Developers: XML, JSON, CSS, JavaScript, Java, C#, MXML, SQL, CSV, Excel.

Key CodeBeautify features:

User-Friendly Interface Wide Range of Tools No Installation Required Free to Use

The JSON Formatter was created to help with debugging.

Key JSON Formatter & Validator features:

User-Friendly Interface Real-time Validation Clear Error Messages Formatting Options

Freeformatter is a platform that contains free online tools for developers, including formatters (json, html, xml, sql, etc.), minifiers (css, javascript), compactors, validators, and much more.

Key FreeFormatter features:

Wide Range of Tools User-Friendly Interface No Installation Required Free to Use

Capable and Ergonomic IDE for JVM.

Key IntelliJ IDEA features:

Intelligent Code Completion Powerful Refactoring Integrated Version Control Rich Plugin Ecosystem

Visualize JSON into interactive graphs.

Key JSON Crack features:

Visual Representation User-Friendly Interface Real-Time Editing Free Access

Open Source

Code Beautifier CSS Formatter and Optimiser - Online CSS parser and Optimiser.

Key Code Beautifier features:

Improved Readability Consistency Syntax Highlighting Customization

View, edit and format JSON online.

Key JSON Editor Online features:

User-friendly Interface Real-time Editing Schema Validation Tree and Text View

Open Source

Eclipse is an open source community, whose projects are focused on building an open development platform comprised of extensible frameworks, tools and runtimes for building, deploying and managing software across the lifecycle.

Key Eclipse features:

Rich Plugin Ecosystem Open Source Cross-Platform Support Mature and Stable

NetBeans IDE 7.0. Develop desktop, mobile and web applications with Java, PHP, C/C++ and more. Runs on Windows, Linux, Mac OS X and Solaris. NetBeans IDE is open-source and free.

Key Netbeans features:

Open Source Modular Architecture Multi-Language Support Strong Java Support

Open Source

Open any JSON URL and it's already formatted, collapsible and searchable. Free, MIT-licensed, and it never phones home.

Key JSONBeautifier.dev features:

Free and Accessible Simple Interface Fast Formatting No Installation Required