Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 to plain text. Runs entirely in your browser.

✓ Bidirectional

Switch between encode and decode modes with a single click.

✓ URL-safe Mode

Generate URL-safe Base64 with -_ instead of +/ padding.

✓ Private

All processing happens locally. No data sent to any server.

privacy

Everything runs in your browser.

Format JSON, decode JWT, count words, generate hashes, and convert text without uploading your input.

workflow

Bookmark once, reuse daily.

A compact toolbox for recurring developer, writing, SEO, and AI-content checks.

rootnest

Part of the RootNest product stack.

Use it with OnePost, 周报侠, 内容搭子Pro, and other small focused tools.