JSON Encoder
JSON Encoder — runs in your browser. Inputs are not stored.
JSON stringify · parse
Wrap text as a JSON string, or unwrap a JSON string again.
How to use
- Put a one-line sentence or a JSON string in the Text field.
- Stringify wraps the value as a quoted JSON string.
- Parse interprets JSON syntax and returns the original value.
- Unescape unwraps a string mixed with backslashes.
- Copy result or Reset to tidy output and input.
Key concepts
The JSON encoder turns an ordinary sentence into a transmittable JSON string, or unwraps an already-quoted value to read it. Stringify serializes the whole input field as one string value, so newlines and quotes are escaped. Parse is the opposite: it accepts only valid JSON, shows a string as original text, and pretty-prints objects or arrays. It is useful for building a message for an API body or reading an escaped string from a log.
Unescape wraps the input once if it does not start with a quote, then parses, leaving a backslash-unwrapped result on screen. The JSON encoder does not enforce a schema or types; if syntax is wrong, a parse-failed message appears in the status field. Conversion is only inside the browser, so samples mixed with tokens do not remain on a server. It is closer to a converter for string boundaries and escapes than a pretty-printer for objects.
Example
Put hello in Text and Stringify: a quoted JSON string appears in the result. Paste that output and Parse to get the original sentence back. Parsing an object literal shows indented JSON.
Related: JSON formatter · JWT decoder · HTML formatter
Frequently asked questions
What is the difference between stringify and parse in the JSON encoder?
Stringify wraps the whole input as a JSON string value. Parse interprets JSON syntax and shows a string as original text, otherwise indented JSON.
When do I use unescape in the JSON encoder?
When reading a log line that still has \n or quote escapes. Even if it does not start with a quote, it wraps once internally then unwraps.
How does object JSON look after parse in the JSON encoder?
If it is not a string, a two-space pretty-serialized result fills the output field. A plain string shows original text without quotes.
What message appears if JSON encoder parse fails?
The status field shows parse failed plus the browser error in red. In that case, do not trust the result field.
Does the JSON encoder save or send input?
No. Stringify, parse, and unescape all finish in the browser. Refreshing also clears the text field.
Does Copy result copy only the JSON encoder output?
Yes. If the result field is empty, it does nothing. Only when there is a value does it go to the clipboard.
Last reviewed: 2026-09-04