Tools for Developers
Free online tools designed for developers. No signup, process directly in your browser.
Recommended Tools
Format and beautify JSON online for free. Validate syntax, minify, tree view, syntax highlighting, and detailed error reporting. Fast browser-based JSON editor with no server uploads. Supports JSON, JSON5.
Encode and decode Base64 online for free. Convert text, strings, and files to Base64 and back. Supports data URI generation, URL-safe encoding, instant browser processing with privacy guarantee.
Test and debug regular expressions online for free. Live matching with highlights, cheat sheet reference, test string validation, pattern explanation, and flag toggles. No installation needed.
Encode and decode URL strings to proper percent-encoding format. Free online URL encoder for safe web addresses and query parameters.
Convert CSV data to JSON format with header detection. Free online CSV to JSON converter for data migration and API prep.
Common Needs
Other Use Cases
Frequently Asked Questions
Are these developers tools free?
Yes. Every recommended tool is free to use with no signup and no daily limits.
Do I need to install anything?
No. All tools run directly in your browser — no downloads or plugins required.
Are my files private?
Yes. Files are processed locally on your device and never uploaded to a server.