Base64 Decoder Online

UTF-8 Decoder

Decode Base64 encoded strings back to human-readable UTF-8 text, API tokens, and credentials online. Automatically detects URL-safe padding and decodes in 0ms.

All Tools

Interactive Tool Console

Client-Side Execution • Runs in browser

Live API Integration Public Edge API

Call this tool in your codebase or backend services directly via REST API.

curl -X POST "https://findfreeapi.com/api/v1/tools/base64" \
  -H "Content-Type: application/json" \
  -d '{"action":"decode","text":"RnJlZUFQSQ=="}'
POST/api/v1/tools/base64
No API Key Required (Public Edge)

Key Standards & Highlights

Auto-detects standard and URL-Safe Base64 formats with padding tolerance
Recovers original multi-byte UTF-8 characters and emojis
One-click input/output swap functionality
Zero cloud uploads: Processes entirely inside browser RAM

Frequently Asked Questions

Can URL-Safe Base64 strings be decoded?

Yes. URL-safe characters (- and _) are automatically normalized and missing padding is auto-repaired before decoding.