Decode Base64 to Text
When you encounter a Base64-encoded string in an API response, email header, JWT token, or configuration file, this tool decodes it back to readable UTF-8 text in your browser — no data is sent to any server.
Open Base64 Encode & Decode →How to Decode Base64 to Text
- Open the Base64 Encode/Decode tool on ToolPrime
- Paste the Base64 encoded string
- Switch to Decode mode if not already selected
- View the decoded plain text output instantly
Common Use Cases
- Decode JWT token payloads for debugging authentication
- Read Base64-encoded email attachments and headers
- Inspect encoded values in configuration files
- Debug API responses containing Base64 data
Frequently Asked Questions
What if the decoded output looks like garbage?▾
The Base64 string may encode binary data (like an image) rather than text. Try the Base64 to Image converter instead.
Does this handle URL-safe Base64?▾
Yes, the decoder accepts both standard Base64 and URL-safe Base64 variants (with - and _ instead of + and /).