Tools That Make Coding Easier
Tired of messy code, manual test data creation, and tedious file comparisons?
CodersWiz offers a suite of free, fast, and simple online developer tools designed to streamline your workflow. Format JSON/XML, compare code, generate test data instantly – no signup needed.
Developer Favorites
Test Data That Looks Real
Tired of manually creating test data? Our free online generators whip up realistic info like BSNs, IBANs, addresses, and complex JSON in seconds. Use this realistic test data for reliable demos, thorough testing, and safe development without touching sensitive user details.
Test Data Generator
Are you looking for realistic test data? Generate BSNs, IBANs, addresses, and more in seconds with this free online tool. Perfect for quickly setting up reliable tests for your application.
JSON Generator
Quickly build custom JSON structures with this free online generator. Just define your schema, generate as much data as you need, and grab ready-to-use JSON for your development work.
Format Your Code Beautiful
Code should be a pleasure to read. Our free online formatting tools clean up messy code for JSON, XML, JS, Python, SQL, and more in seconds, applying industry-standard styles. Improve readability and maintain consistency effortlessly.
JSON Formatter
Format, validate, and beautify JSON effortlessly with our free online tool. Makes complex JSON readable and helps catch syntax errors quickly.
XML Formatter
Make complex XML readable and valid with our free online formatter and beautifier. Maintains structure while improving navigation and editing.
JavaScript Formatter
Format JavaScript code with our online formatter. Helps maintain code quality across your entire project.
HTML Formatter
Clean up and structure your HTML markup with our free online formatter. Makes code readable and easier to maintain, especially for complex layouts.
CSS Formatter
Organize and beautify your stylesheets with our free online CSS formatter. Helps maintain consistency and makes complex CSS easy to work with.
Python Formatter
Format Python code to PEP 8 standards instantly using our free online tool. Maintain consistent style and improve code readability effortlessly.
Java Formatter
Clean up Java code with consistent indentation using our free online formatter. Follows standard conventions for professional, maintainable code.
C++ Formatter
Format C++ code following standard style guides with our free online tool. Improves readability and maintains consistency across complex codebases.
SQL Formatter
Make complex SQL queries readable with our free online formatter. Proper indentation helps spot errors and understand query logic quickly.
Markdown Formatter
Ensure professional-looking Markdown documents with our free online formatter. Cleans up spacing and structure for optimal rendering.
PHP Formatter
Format PHP code to PSR standards automatically with our free online tool. Makes your code more maintainable and collaboration-friendly.
Compare Every Difference
Finding changes between code versions shouldn't be a chore. Our free online visual comparison tools (diff tools) highlight every difference for text, JSON, XML, HTML, and CSS – making code reviews and debugging dramatically faster.
JSON Compare
Visually compare JSON files and highlight differences with our free online diff tool. Perfect for tracking changes and troubleshooting API responses.
XML Compare
Instantly see structural and content differences in XML with our free online comparison tool. Great for tracking configuration changes.
Text Compare
Compare any text files or code snippets with our free online diff tool. Highlights additions, deletions, and modifications for easy tracking.
HTML Compare
Analyze HTML differences structure-awarely with our free online comparison tool. Helps track layout changes and identify markup modifications.
CSS Compare
Identify every style difference in CSS with our free online comparison tool. Makes tracking changes across versions simple and visual.
Built By Developers For Developers
Lightning Fast
No waiting around. Our free online tools process your code instantly with optimized algorithms that handle even large files with ease. Speed matters when you're in the flow.
Simple & Intuitive
No bloated interfaces or complex setups. Just paste your code into our free online tools, click a button, and get results. We focus on making these developer utilities easy to use.
100% Free
No paywalls, subscriptions, or hidden fees. Every formatter, comparer, and generator is completely free, with no strings attached. Use them as much as you need.
Your Code Stays Private
Your code never leaves your browser when using our online tools. We don't store, share, or analyze what you paste. Everything happens client-side for complete privacy.
Frequently Asked Questions
Are these tools really free to use?
Yes, all CodersWiz tools are completely free to use without any limitations or hidden costs. We don't require registration, and there are no usage caps on file sizes or number of operations.
Is my code or data secure when I use these tools?
All processing happens locally in your browser - we don't store or transmit your code or data to any servers. Your sensitive information never leaves your computer, making our tools safe for both personal and business use.
Can I use these tools offline?
While our tools are primarily designed for online use, you can load our site once and then use most functionality without an internet connection. For regular offline use, we recommend installing dedicated local tools.
What file size limits apply to the formatters and comparison tools?
Our tools can handle files up to several megabytes in size, though performance depends on your device's capabilities. For extremely large files (10MB+), you might experience some slowdown depending on your browser and hardware.
How accurate is the test data generated by your tools?
Our test data generators create realistic-looking data that follows the correct formats and patterns for each data type. However, all generated values are synthetic and not valid for real-world use (e.g., generated credit card numbers pass format validation but aren't actual accounts).