JSON Formatter
Format minified JSON with readable indentation.
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Base64 Encoder Decoder
Encode or decode UTF-8 text as Base64. Your input stays in this browser during processing.
Private local processing
Your text and settings stays in this browser.
About Base64 Encoder Decoder
Encode UTF-8 text as Base64, or decode a Base64 payload back into readable text, entirely in your browser.
What the result contains
UTF-8 text encoded as Base64, or decoded text from a Base64 payload.
Accepted input
- PLAIN
- TXT
How to use Base64 Encoder Decoder
- Paste the text or Base64 value you're working with.
- Choose to encode or decode.
- Review the result, watching for replacement characters that suggest binary data.
- Copy or download the converted text.
Practical example
Encode a short configuration value for a test fixture, then decode it to verify the original text.
Check your result before using it
Try encoding Hello and decoding the result back to Hello before using a longer input. Compare punctuation, accented characters and line breaks after the round trip. Base64 changes representation; it does not encrypt a password or make a document private. If another system rejects the output, check whether it expects standard Base64, URL-safe Base64 or a data URL prefix rather than repeatedly encoding the same value.
When to use Base64 Encoder Decoder
- Encode a short configuration value for a test fixture
- Decode a Base64 string found in an API response or log
- Verify a Base64 payload matches its expected original text
Important limitations
- Base64 is encoding, not encryption, and provides no confidentiality.
- Binary files should use Image to Base64 or a binary-aware workflow rather than a text decoder.
Troubleshooting Base64 Encoder Decoder
Decoded text contains replacement characters
The payload may represent binary data or a different character encoding instead of UTF-8.
Private local processing
The text and settings is processed on this device and is not uploaded to MyFileNest. Closing or refreshing the page clears the active session.
Frequently asked questions
Practical limit: Large text or structured-data inputs can respond more slowly in the browser. Verify generated output before using it in a production workflow.