About Base64 Encoder

Base64 Encoder is a free, browser-based tool that lets you encode plain text to Base64 and decode Base64 back to text instantly.

Why We Built This

Developers frequently need to encode or decode Base64 strings while working with APIs, data URIs, authentication headers, and more. We wanted a fast, private tool that handles UTF-8 properly without sending any data to external servers.

Features

• Instant encode and decode with one click
• Full UTF-8 support (emojis, accented chars, CJK)
• Swap input/output for quick round-trips
• Copy results to clipboard
• 100% client-side — your data stays in your browser

Open & Free

This tool is completely free to use with no sign-up required. We sustain the site through non-intrusive advertising.