JSON ⇄ Base64 Converter
Encode JSON to Base64 or decode Base64 to JSON
What is JSON to Base64 conversion?
JSON to Base64 conversion encodes JSON data into Base64 format, which is a binary-to-text encoding scheme. This makes JSON safe to transmit in URLs, emails, or other text-only systems.
How do I convert JSON to Base64?
Paste your JSON data into the input field and click 'Encode to Base64'. The tool will validate your JSON and convert it to a Base64-encoded string instantly.
Why convert JSON to Base64?
Base64 encoding is useful for transmitting JSON in URLs, storing JSON in cookies, embedding JSON in HTML/XML, or sending JSON through systems that only support ASCII text.
Can I decode Base64 back to JSON?
Yes! Switch to 'Decode' mode, paste your Base64 string, and click 'Decode from Base64'. The tool will convert it back to formatted JSON.
Is Base64 encoding secure?
No, Base64 is NOT encryption! It's just encoding. Anyone can decode Base64 data. Never use Base64 alone for sensitive data - use proper encryption instead.
Does Base64 increase data size?
Yes, Base64 encoding increases data size by approximately 33%. This is because it represents binary data using only printable ASCII characters.
Can I encode large JSON files?
Yes, the tool handles JSON of various sizes. However, very large files (over 10MB) may take a moment to process and result in very long Base64 strings.
Is my data secure when using this tool?
Absolutely! All conversion happens entirely in your browser using JavaScript. Your JSON data never leaves your computer, ensuring complete privacy and security.
Does the tool work offline?
Yes! Once the page is loaded, the converter works completely offline. All processing happens locally in your browser without requiring an internet connection.
What if my Base64 string is invalid?
The tool will show an error message if the Base64 string is malformed or doesn't contain valid JSON data after decoding.