Decode Base64 from an API payload
Paste a Base64 string returned by an API to inspect the readable text, JSON payload or encoded content.
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Base64 Encoder and Decoder Online
If you are working with API payloads or encoded data, you may also want to try our JSON tools or our encoding tools.
Related tools
- Decode JWT to inspect JSON Web Tokens made of header, payload and signature.
- Format JSON to format decoded payloads, API responses and JSON strings.
- Estimate LLM tokens to estimate token usage and cost before sending decoded text to an LLM.
How it works
Encode text to Base64 or decode Base64 strings directly in your browser. Useful for API payloads, tokens, credentials, debugging and encoded data without sending anything to external servers.
Practical examples
Encode text for HTTP requests or credentials
Convert plain text to Base64 when an API, authentication flow or integration requires encoded values.
Encode and decode UTF-8 text safely
The tool supports UTF-8, so it works with accents, emoji and non-ASCII characters when encoding or decoding Base64.
FAQ
Is Base64 encoding secure?
No. Base64 is an encoding format, not encryption. Anyone can decode a Base64 string back to readable text.
Is data sent to a server?
No. Base64 encoding and decoding happen locally in your browser.
Does this Base64 tool support UTF-8?
Yes. The tool correctly handles accents, emoji and non-ASCII characters.
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