When to use this tool
Read a JSON document transported as Base64 and format its object structure. The first step recovers the JSON bytes and the second applies indentation.
Example
Use “Try example” to load this public sample and its settings, then run it.
Input
eyJuYW1lIjoiU2VyaWFsaXplIiwiY291bnQiOjJ9
Result
{
"name": "Serialize",
"count": 2
}How the result is produced
Conventions and limitations
Formatting does not validate a schema or verify authenticity. Very large JSON documents require enough browser memory. Do not use formatted output for signatures that depend on exact original bytes.
How to use this page
- Paste your input or open a local file.
- Adjust tool options if needed, then choose Run tool.
- Copy the result or download the original output bytes.
Inputs and results are not added to the public catalogue or saved in the URL. Processing happens in your browser; HTTP Request and DNS over HTTPS send the requests you explicitly run. Files up to 128 MiB can be opened; decompression and image tools may have smaller processing limits. Large results have a shortened preview. Text and HTML downloads use UTF-8; binary downloads preserve output bytes. Pasted text follows browser newline handling; open a file when exact input bytes matter.