JSON ⇄ Base64
Encode JSON to Base64 and decode Base64 back to pretty JSON.
Conversion
Sponsored
How it works
How it works
- Uses
btoa/atobto Base64‑encode/decode, wrapped with URI encoding tricks to handle UTF‑8 safely in browsers. - “JSON → Base64” encodes the raw JSON string; “Base64 → JSON” decodes and pretty‑prints with 2‑space indentation.
- Note:
btoa/atoboperate on Latin‑1; the wrapper avoids mojibake for non‑ASCII text. For binary data, preferUint8Arrayand a dedicated Base64 routine. - Base64URL uses
-/_instead of+//and strips=padding (not used here).
Privacy & Security
No network traffic.
Accuracy, Limits & Tips
Large objects may be slow; no streaming.
Examples
{"foo":123}→eyJmb28iOjEyM30=
Looking for broader guides and best practices? Visit the ToolsAreUs Blog for indexes (like the full tool list) and articles (e.g. secure password generation).