Developer Tools

Tools for developers and programmers

6 free tools available. All tools work in your browser - no upload, no registration required.

Base64 Encoder & Decoder

Free online Base64 encoder and decoder. Encode text to Base64 or decode Base64 to text instantly. Supports Base64URL, batch processing, and Unicode. 100% browser-based, no data upload.

HTML Formatter & Beautifier

Free online HTML formatter and beautifier. Format HTML code with customizable indentation, syntax highlighting, and real-time validation. 100% browser-based, no data upload, no file size limits.

JSON Formatter & Validator

Free online JSON formatter, validator, and beautifier. Format JSON with syntax highlighting, precise error location, tree view, and JSONPath query. 100% browser-based, no data upload.

Free Lorem Ipsum generator with multiple formats. Create dummy text, placeholder text, or filler text for web design, mockups, and prototypes. Supports paragraphs, sentences, words, and lists with HTML tags. No signup, 100% private.

SQL Formatter

Free online SQL formatter with real-time preview. Format SQL for MySQL, PostgreSQL, SQL Server instantly. No signup, no ads, 100% private. Try now!

URL Encoder & Decoder

Free online URL encoder and decoder with encodeURI and encodeURIComponent support. Features batch processing, history tracking, and keyboard shortcuts. Handles special characters, Chinese, Unicode, and emoji. 100% browser-based.

Frequently Asked Questions about Developer Tools

Are these developer tools free to use?

Yes! All developer tools on FreeToolCenter are completely free with no hidden costs or usage limits.

Do I need to register to use developer tools?

No registration required. Simply open any tool and start using it immediately.

Is my data safe when using these tools?

Yes! All processing happens locally in your browser. Your data never leaves your device.