Free Online Developer Tools – 12 Essential Tools
Access our comprehensive suite of free online developer tools instantly. Format code, validate syntax, convert data, debug, and more—all in your browser.
JSON Formatter
Format, validate, and beautify JSON data
XML Formatter
Format, Beautify and validate XML documents
SQL Formatter
Beautify and format SQL queries
CSV to JSON
Convert CSV data to JSON format
JSON to CSV
Convert JSON arrays to CSV format
HTML Formatter
Format and beautify HTML code
Diff Checker
Compare texts and find differences
Base64 Decoder
Decode base64 to PDF, images, and text
Hash Generator
Generate MD5, SHA256, SHA512 hashes
URL Encoder & Decoder
Encode or decode percent-encoded URLs and query strings
Regex Tester & Debugger
Test and debug regular expressions online
Timestamp Converter
Convert Unix timestamps to dates and vice versa
Transform Your Development Workflow with Free Online Tools
Transform your development workflow with our comprehensive suite of 12 free online developer tools. From JSON formatter and XML formatter to diff checker,base64 decoder, hash generator, URL encoder,regex tester, and timestamp converter—we provide instant, secure, browser-based solutions for all your development needs. Our platform includes code formatting tools,data conversion tools, debugging tools, and utility toolsthat work entirely in your browser—no installation, no registration, completely free.
Use our free developer tools to format code, validate syntax, convert data formats, compare text, decode base64, generate hashes, encode URLs, test regex patterns, convert timestamps, and optimize your development process. Perfect for developers who need online developer toolsfor web development, API testing, data validation, debugging, and code optimization.
Secure & Private
Your data never leaves your browser. All processing happens locally for maximum privacy.
Lightning Fast
Process large files instantly with our optimized algorithms and modern web technologies.
Beautiful Output
Get perfectly formatted, readable code with syntax highlighting and proper indentation.
The Ultimate Free Online Developer Tools Platform – 12 Essential Tools
SmartFormatter is the leading free online developer tools platform trusted by thousands of developers worldwide. Our comprehensive collection of 12 essential online developer tools provides everything you need for modernweb development and programming. Whether you're looking for a JSON formatter online,XML formatter online, SQL formatter, diff checker,base64 decoder, hash generator, URL encoder,regex tester, or timestamp converter, we offer professional-grade tools that work entirely in your browser.
Our code formatting tools include JSON formatter, XML formatter,SQL formatter, and HTML formatter to help you format and beautify code instantly. Our data conversion tools like CSV to JSON converter and JSON to CSV converterenable seamless data transformation. Our utility tools include diff checker for comparing text,base64 decoder for decoding base64 strings and JWT tokens, hash generator for MD5, SHA256, and SHA512 hashes,URL encoder decoder for encoding and decoding URLs, regex tester for testing regular expressions, and timestamp converter for converting Unix timestamps to dates.
As a comprehensive web development tools platform, SmartFormatter goes beyond basic formatting. Our programming tools include advanced features like real-time syntax validation, error detection, code minification, format conversion, text comparison, base64 decoding, hash generation, URL encoding, regex testing, and timestamp conversion. Whether you need to format JSON online, compare text online,decode base64, generate hash, encode URL, test regex, or convert timestamp, our free developer tools have you covered.
Why Choose SmartFormatter - The Best Online Code Formatter?
SmartFormatter is a comprehensive online code formatter and free developer tools platform. Our suite of programming tools and web development tools makes code formatting, validation, and conversion effortless. Whether you need a JSON formatter online,XML formatter free online, or SQL beautifier tool, we provide advancedcode beautifier online solutions.
Privacy First
All data processing happens in your browser. Your code never leaves your device, ensuring complete privacy and security.
Lightning Fast
Process large files instantly with our optimized algorithms. No waiting, no timeouts, just fast results.
Developer Focused
Built by developers, for developers. Every tool is designed with productivity and ease of use in mind.
Mobile Ready
Works perfectly on desktop, tablet, and mobile devices. Access your tools anywhere, anytime.
Precision Tools
Advanced formatting options, validation, and conversion tools that handle complex data structures with ease.
Always Free
No registration, no hidden costs, no premium tiers. All tools are completely free forever.
Complete Suite of Online Developer Tools & Code Formatters
Our free developer tools platform offers everything you need for modern web development. From JSON formatter online tools to XML formatter free online solutions, we provide the most comprehensive programming tools collection available. Each tool is optimized for performance and designed with developers in mind.
Format & Beautify Code with Professional Tools
Our code formatter online platform provides instant access to professional code formatting toolsincluding JSON formatter, XML formatter, SQL formatter, andHTML formatter. These tools help you maintain clean, readable, and well-structured code. Whether you're working with JSON, XML, SQL, JavaScript, or other data formats, our online code formatter tools ensure consistent formatting standards across your projects.
Convert Data Formats & Transform Data
Our data conversion tools include CSV to JSON converter and JSON to CSV converterfor seamless data transformation. Perfect for API integration, data migration, and format standardization. Convert between JSON, CSV, XML, and other formats with our powerful data formatter tools.
Debug, Compare & Test with Advanced Tools
Our debugging tools include diff checker for comparing text and finding differences,regex tester for testing and debugging regular expressions, base64 decoder for decoding base64 strings and JWT tokens, and URL encoder decoder for encoding and decoding URLs. These tools help you identify issues, test patterns, and decode data efficiently.
Generate Hashes & Convert Timestamps
Our utility tools include hash generator for generating MD5, SHA256, and SHA512 hashes, and timestamp converter for converting Unix timestamps to dates and vice versa. Essential tools for security, authentication, and time-based operations in your development workflow.
Code Formatting & Beautification Tools
Our code beautifier online tools include JSON, XML, SQL, and JavaScript formatters. These online code formatter tools help maintain clean, readable code with proper indentation and syntax highlighting.
- JSON Formatter - Format, validate, and beautify JSON data online
- XML Formatter - Beautify and validate XML documents instantly
- SQL Formatter - Format and optimize SQL queries for readability
- HTML Formatter - Format and beautify HTML code online
Data Conversion & Transformation Tools
Convert between different data formats seamlessly with our web development tools. Perfect for data migration, API integration, and format standardization.
- CSV to JSON Converter - Convert CSV files to JSON format instantly
- JSON to CSV Converter - Transform JSON arrays to CSV format
- Data Validation - Validate JSON and XML syntax and structure
- Format Conversion - Seamless conversion between data formats
Debugging & Testing Tools
Our debugging tools help you identify issues, compare code, test patterns, and decode data. Essential for quality assurance and troubleshooting.
- Diff Checker - Compare texts and find differences between files
- Regex Tester - Test and debug regular expressions online
- Base64 Decoder - Decode base64 strings, JWT tokens, and encoded data
- URL Encoder/Decoder - Encode and decode URLs and query strings
Utility & Helper Tools
Essential utility tools for everyday development tasks including hash generation, timestamp conversion, and data encoding. All tools work entirely in your browser for maximum security.
- Hash Generator - Generate MD5, SHA256, SHA512 hashes instantly
- Timestamp Converter - Convert Unix timestamps to dates and vice versa
- JWT Decoder - Decode and inspect JWT tokens (included in Base64 Decoder)
- Percent Encoding - Encode and decode URL components safely
Common Use Cases for Our 12 Free Online Developer Tools
Format JSON Online for API Development
Use our JSON formatter online to format and validate JSON responses from APIs. Our format JSON online tool helps you debug API responses, structure data correctly, and ensure proper JSON syntax. Perfect for frontend developers working with REST APIs and backend developers testing JSON payloads.
Format XML Online for Data Integration
Our XML formatter online tool helps you format and validate XML documents for enterprise integrations, SOAP services, and data exchange. Use our format XML online feature to beautify XML, detect errors, and ensure compliance with XML schemas and standards.
Format SQL Online for Database Queries
Improve SQL query readability with our SQL formatter and SQL beautifier tools. Format complex SQL queries, optimize readability, and maintain consistent coding standards across your database development projects. Our format SQL online tool supports all major SQL dialects.
Beautify JavaScript Code Online
Use our HTML formatter and HTML beautifier to format and beautify JavaScript code before code reviews or deployment. Our js formatter online tool ensures consistent formatting standards and improves code readability across your JavaScript projects.
Convert CSV to JSON for Data Processing
Transform CSV data to JSON format instantly with our CSV to JSON converter. Perfect for importing CSV files into web applications, processing spreadsheet data, and converting tabular data to structured JSON format. Our csv to json tool handles complex CSV structures seamlessly.
Convert JSON to CSV for Spreadsheet Export
Export JSON data to CSV format with our JSON to CSV converter. Ideal for creating spreadsheets from JSON data, exporting API responses to Excel, and converting structured data to tabular format. Our json to csv tool maintains data integrity during conversion.
Compare Text and Find Differences
Use our diff checker to compare texts, code files, and documents side-by-side. Our text diff checker highlights differences, making it easy to identify changes, review code modifications, and compare file versions. Perfect for code reviews and document comparison.
Decode Base64 and JWT Tokens
Decode base64 encoded strings, JWT tokens, and encoded data with our base64 decoder. Our jwt decoder helps you inspect JWT token payloads, verify token structure, and decode authentication tokens. Essential for debugging authentication and data encoding issues.
Generate MD5, SHA256, SHA512 Hashes
Generate cryptographic hashes instantly with our hash generator. Create MD5 hashes,SHA256 hashes, and SHA512 hashes for password hashing, data integrity verification, and security applications. Our md5 generator and sha256 generator support multiple hash algorithms.
Encode and Decode URLs
Encode and decode URLs, query strings, and URL components with our URL encoder decoder. Our url encoder and url decoder tools help you safely encode special characters, handle percent encoding, and process URL parameters. Perfect for API development and web scraping.
Test and Debug Regular Expressions
Test and debug regular expressions with our regex tester and regex debugger. Our regular expression tester provides real-time matching, highlighting, and explanation of regex patterns. Perfect for validating regex patterns, testing string matching, and learning regex syntax.
Convert Unix Timestamps to Dates
Convert Unix timestamps to human-readable dates and vice versa with our timestamp converter. Our unix timestamp converter and epoch converter support multiple time zones, date formats, and timestamp formats. Perfect for API development, log analysis, and time-based operations.
Frequently Asked Questions About Our Online Code Formatter Tools
Is SmartFormatter really free? Are all code formatting tools free?
Yes! All our free online code formatter tools are completely free to use with no registration required. No hidden fees, no premium tiers, no limitations. Access our JSON formatter online,XML formatter online, SQL formatter, and all other code formatting toolswithout any cost.
Is my data secure when using online code formatter tools?
Absolutely. All processing happens entirely in your browser. When you use our code formatter online tools, your code never leaves your device, ensuring complete privacy and security. No data is sent to our servers, making our online code formatter platform completely secure.
What file formats are supported by your code formatting tools?
Our code formatting tools support JSON, XML, SQL, JavaScript, CSV, YAML, and more. Each tool is specifically designed for its format—use our JSON formatter online for JSON files,XML formatter online for XML documents, SQL formatter for SQL queries, and code beautifier online for various programming languages.
Can I use these online code formatter tools offline?
Yes! Our code formatter online tools work offline once loaded. You can bookmark pages and use our online code formatter tools without an internet connection. Perfect for developers who need code formatting tools available at all times.
How accurate are your code formatting and validation tools?
Our code formatting tools use industry-standard algorithms and are tested extensively. Our JSON validator and XML validator tools handle complex data structures with high accuracy, and our code beautifier online tools maintain formatting consistency across different codebases.
Can I format large files with your online code formatter?
Yes! Our code formatter online tools can handle reasonably large files efficiently. Whether you're using our JSON formatter online, XML formatter online, or SQL formatter, our code formatting tools are optimized for performance and can process large code files quickly.