About Base64 Tools

Base64 Tools is a free, fast, and privacy-focused online utility for encoding and decoding Base64 strings. Built for developers, designers, and anyone who works with data encoding.

Features

• Instant Base64 encoding and decoding
• Full Unicode/UTF-8 support
• Swap input and output with one click
• Copy result to clipboard
• 100% client-side — no server calls
• Works offline after first load
• Dark mode UI, mobile-friendly

Privacy First

All encoding and decoding happens locally in your browser using JavaScript. We never transmit, store, or log any of your data. Your information stays entirely on your device.

Tech Stack

Built with Astro and Tailwind CSS, deployed on Cloudflare Pages for lightning-fast global delivery.

Contact

Found a bug or have a suggestion? Feel free to reach out at contact@base64-tools.dev.