JSON Stringify Online
Escape, Encode And Undo

What JSON Stringify Online Does

Sometimes JSON has to travel inside something else. It goes into a string in your code, a field in another JSON file, a URL or a header. Then quotes and line breaks start to cause trouble.

That is where this JSON stringify online tool helps. Paste your JSON, pick a conversion, and the safe version appears. Press Reverse it, and you get the original back.

The same page covers escape, unescape, URL encoding, query strings and Base64. So one tab replaces five small tools.

The rules come from the standard. JSON.stringify defines how a value becomes text, and this tool follows it. Even so, it adds options that the built-in method lacks.

Why not use the browser console? You can, but it takes time. You open the tools, paste the text and fix the quotes by hand. Also, the console cannot undo a Base64 string or wrap a line for Java. So this page saves you steps.

Stringify And Parse

Stringify turns text into one string literal. The quotes inside get a backslash, and each line break becomes \n. The whole thing sits in double quotes.

Parse does the opposite. Paste an escaped string, and you get the text inside. It strips the outer quotes for you. It even strips a variable name, such as String json =, and the semicolon.

Some values get stringified twice by mistake. Set Levels to 2, and parse peels both layers in one go.

Wrap The Result As Code

Most people stringify JSON to paste it into source code. So pick a language under Wrap as code, and you get a full line.

You can choose JavaScript, Java, C#, Python, Go, PHP or Shell. Each language has its own quoting rules. PHP uses single quotes, and Shell needs a special trick for an apostrophe. The tool handles both.

Go does not read surrogate pairs in escapes. If your text holds emoji, leave the non-ASCII switch off for Go.

JSON Escape And Unescape Online

Escape is stringify without the outer quotes. Use it when your JSON goes inside a string that already has quotes around it.

Unescape removes the backslashes. A backslash and an n become a real line break. A backslash and a quote become a quote. Unicode escapes, a backslash and a u with four digits, turn back into letters.

This JSON escape online tool also reads \x41 and \u{1F600}, which other tools skip.

Query Strings And Base64

Need JSON in a URL? Percent-encoding makes it safe. For forms and APIs, convert an object into a query string instead. Nested keys use brackets, such as user[name]=Ana.

It works the other way, too. Paste a whole URL, and the query becomes JSON. Brackets nest, and a repeated name becomes a list.

Base64 suits headers and tokens. The tool encodes accents and emoji as UTF-8, so they survive. A URL-safe option swaps two characters and drops the padding.

For example, a search page can take its filters as a query string. Then a link carries the filters, and a friend sees the same results. But keep the data flat and short, because many servers cap the length of an address.

Reverse It In One Click

Every conversion has a partner. The Reverse it button moves the result into the input and switches to the partner. Then you can check that the round trip gives you the same JSON.

Safe By Design

The tool never runs your text as code. Unescaping is a scanner, and parsing uses the same reader as our other JSON tools. Query keys such as __proto__ are refused, so they cannot change how an object behaves.