JSON Base64 Encode & Decode
Base64 encoding turns JSON into a compact ASCII string that is safe to embed in URLs, data URIs, tokens or systems that only accept plain text. This tool encodes JSON to Base64 and decodes Base64 back into clean, formatted JSON.
It handles the round trip both ways, so you can quickly inspect the contents of an encoded blob or prepare JSON for transport.
How to use the json base64
- 1Choose a directionSwitch between Encode (JSON → Base64) and Decode (Base64 → JSON).
- 2Paste your inputPaste JSON to encode, or a Base64 string to decode.
- 3Read the resultEncoding produces a Base64 string; decoding produces formatted, validated JSON.
- 4Copy the outputCopy the encoded or decoded result with one click.
Features
- Encode JSON to Base64
- Decode Base64 to formatted JSON
- Output JSON is validated and beautified
- Runs entirely in your browser
When to use it
- Embedding JSON in a data URI or URL parameter
- Inspecting the JSON payload inside an encoded blob
- Preparing JSON for systems that require plain text
- Debugging encoded values seen in logs
Frequently asked questions
How do I encode JSON to Base64?
Select Encode, paste your JSON, and MyJson outputs the Base64 string. Switch to Decode to turn a Base64 string back into formatted JSON.
Is Base64 encryption?
No. Base64 is encoding, not encryption — anyone can decode it. Use it for safe transport of text, not to protect secrets.
Does decoding validate the JSON?
Yes. After decoding, the result is parsed and beautified, so you immediately see whether the underlying JSON is valid.
Related tools
Looking to learn more? Browse our JSON guides and tutorials.