API debugging
Decode Base64 fragments from responses, headers, or logs while testing integrations.
Developer tools
Base64 Tool
Convert plain text to Base64, or decode Base64 back to readable text.
How to use
- 1
Paste text or Base64 input.
- 2
Choose encode or decode.
- 3
Copy the converted output.
Quick answer
Base64 Encode/Decode converts plain UTF-8 text into Base64 strings and reverses Base64 back into readable text. It is best for API debugging, config checks, and data-transfer formats—not for securing secrets.
Key features
- Encodes plain text to Base64 and decodes Base64 back to UTF-8 text.
- Runs entirely in the browser using standard JavaScript encoding APIs.
- Supports Unicode text through UTF-8 safe encode and decode handling.
- Provides instant output you can copy into tickets, docs, or test requests.
- Does not upload pasted input to a server during the normal workflow.
- Useful for JWT payload inspection, config values, and quick encoding checks.
About this tool
Base64 is everywhere in modern software. API examples, email systems, data URLs, JWT payloads, and configuration snippets often wrap text in Base64 so it can travel safely through systems that expect ASCII-only content. That does not make Base64 secure—it is encoding, not encryption. Anyone can decode it. This tool lets you encode readable text into Base64 or decode Base64 back into human-readable UTF-8 directly in your browser. That makes it useful when you are debugging an API response, checking a config value, inspecting part of a token, or preparing a test payload. Because processing happens locally, private snippets and staging credentials do not need to be sent to an external converter. Do not paste production secrets unless your security policy allows browser-based utilities.
Common scenarios
JWT payload inspection
Decode the middle segment of a JWT to inspect claims during development.
Config and env checks
Encode or decode values used in deployment configs, scripts, and documentation examples.
Documentation examples
Prepare readable encode/decode examples for tickets, README files, and handoff notes.
FAQ
Is Base64 encryption?
No. Base64 is encoding, not encryption. Do not use it to protect secrets.
Can it handle Unicode text?
Yes. The browser script uses UTF-8 safe encoding and decoding.
Can it decode binary files?
This tool focuses on text encode and decode workflows rather than full binary file handling.
Is my input uploaded?
No. Base64 conversion runs locally in your browser.
Why does Base64 look longer than the original text?
Base64 represents bytes in ASCII characters, which increases the visible length compared with plain text.
Can I use this for passwords?
You can encode them technically, but Base64 provides no security. Use proper secret management instead.