Developer Tools
Browse Developer Tools
Essential online tools for developers and programmers. JSON formatter & validator, Base64 encoder/decoder, UUID generator, hash generator, regex tester, DNS lookup, and more. 100% free, browser-based, no installation required.
API Finder
Search public APIs by keyword or category, filter for HTTPS and CORS signals, and review documentation links before a project integration.
Base64
Encode UTF-8 text, decode Base64 or Base64URL strings, remove padding when needed, and copy the converted text after review.
Code Formatter
Paste or upload code, choose the language, adjust formatting options, and compare the formatted output before copying it back into your editor.
DNS Lookup
Enter a domain, choose A, AAAA, MX, TXT, CNAME, or NS, then review returned DNS records, TTL values, and response data.
Hash Generator
Paste text and compare the generated MD5, SHA-1, and SHA-256 digests before copying a checksum into code, docs, or tickets.
JSON Formatter
Paste JSON or upload a .json file, format it for reading, validate syntax, minify the payload, and inspect nested objects in code or tree view.
JSON Generator
Create sample JSON arrays from custom field names, choose data types, set the number of records, then copy or download the generated result.
JSON to CSV
Paste a JSON array of objects, or a single object, then convert it into CSV rows you can inspect, copy, rename, and download.
My IP
Check the public IP address visible from this browser, refresh after network changes, and copy the result for allowlists, VPN checks, or remote access notes.
Regex Tester
Enter a JavaScript regex pattern, toggle g/i/m/s/u/y flags, and inspect live matches, indexes, capture groups, named groups, and errors.
UUID Generator
Create UUID v4 values in batches, choose lowercase or uppercase, switch hyphen and brace formats, and copy the IDs you need.
Developer Tools
Our comprehensive collection of free online developer tools is built for programmers, web developers, and software engineers. From JSON formatting and validation to Base64 encoding, hash generation, and regex testing, we provide essential utilities that streamline your development workflow.
Key Features of Developer Tools
Everything you need for professional developer tools
Data Formatting
Format and validate JSON, convert between data formats, beautify or minify code
Encoding & Hashing
Base64 encoding/decoding, MD5/SHA hash generation for security and data integrity
Privacy First
All processing happens in your browser - your data never leaves your device
Instant Results
Real-time processing with no delays - see results as you type
Multiple Formats
Support for JSON, CSV, Base64, UUID, regex, and various encoding formats
Always Free
All developer tools are completely free with no limitations or hidden fees
How to Use Developer Tools
Follow these simple steps to get started
Select Your Tool
Choose from JSON formatter, Base64 encoder, UUID generator, hash generator, regex tester, DNS lookup, or other developer utilities
Input Your Data
Paste your JSON, text, code, or enter the data you want to process. Most tools provide real-time validation
Get Instant Results
View formatted output, copy results, download files, or use the generated data directly in your projects
Pro Tips
- Use JSON formatter to validate API responses and debug issues
- Generate UUIDs for database primary keys and unique identifiers
- Test regex patterns with multiple test cases before implementation
- Use hash generator to verify file integrity and create checksums
- Check DNS records to troubleshoot domain configuration issues
Explore More Tools
Discover other powerful tools to boost your productivity
Frequently Asked Questions
Everything you need to know about Developer Tools
Yes! All our developer tools including JSON formatter, Base64 encoder/decoder, UUID generator, hash generator, regex tester, DNS lookup, IP checker, JSON generator, and JSON to CSV converter are 100% free with no hidden charges.
Our JSON formatter validates, beautifies, and minifies JSON data in real-time. It checks for syntax errors, displays data in a tree structure, and highlights invalid JSON.
Base64 is an encoding scheme that converts binary data into ASCII text format. Use it to embed images in HTML/CSS, encode data in URLs, or transmit binary data over text-based protocols.
Our hash generator creates MD5, SHA-1, SHA-256, and SHA-512 hashes entirely in your browser - no data is sent to servers.
UUID (Universally Unique Identifier) is a 128-bit number guaranteed to be unique. Developers use UUIDs for database primary keys, API request IDs, session tokens, and distributed system identifiers.
Our regex tester lets you write, test, and debug regex patterns in real-time with multiple test strings. See matches, groups, and explanations instantly.
Most developer tools work offline after initial page load: JSON formatter, Base64 encoder/decoder, UUID generator, hash generator, and regex tester all run entirely in your browser.
Absolutely! All developer tools are free for personal and commercial use without restrictions.
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