JavaScript Unescape
Decode escaped JavaScript strings, converting sequences like \n, \t and \uXXXX back into their characters. Runs in your browser.
How to use JavaScript Unescape: Open JavaScript Unescape — it runs entirely in your browser with no setup. Paste or type your input into the text area, or upload a file where supported. Set any options you need. The result appears in the output panel — there is no upload step and no waiting on a server. Everything runs inside your browser, so your data never leaves your device.
Tip: drag a text file onto the box above to load it — drop several to append them in order.
Unescaped text
Decode escaped JavaScript strings, converting sequences like \n, \t and \uXXXX back into their characters. Runs in your browser. JavaScript Unescape is a free, browser-based tool in the Filevane developer tools collection — there is nothing to install, no account to create and no watermark on your results. It works on desktop, tablet and mobile, and because the work happens on your own device it stays fast even with large inputs.
How to use JavaScript Unescape
- Open JavaScript Unescape — it runs entirely in your browser with no setup.
- Paste or type your input into the text area, or upload a file where supported.
- Set any options you need. The result appears in the output panel — there is no upload step and no waiting on a server.
- Review the output instantly; large inputs are handled locally without lag.
- Copy the result to your clipboard or download it. Your data never leaves the page.
Why use JavaScript Unescape?
- 100% free with no limits, no sign-up and no watermarks.
- Private by design — your data are processed in your browser and never uploaded to a server.
- Fast and lightweight, with instant results even on a phone or a slow connection.
- Works everywhere — any modern browser on Windows, macOS, Linux, Android or iOS.
- Part of a full developer tools suite, so related js unescape tasks are one click away.
What people use JavaScript Unescape for
- Reading an obfuscated or escaped script to work out what it actually does.
- Recovering readable text from a JSON or JavaScript string full of \u sequences.
- Debugging a value that shows as escaped characters in a log rather than as text.
JavaScript Unescape: limits and things worth knowing
- Decoding is safe: this reverses the escaping textually and never executes the input. Never run unknown script to find out what it says.
- \u sequences, \x sequences, octal escapes and the standard \n \t \r \\ pairs are all handled.
- Escaped text is not encrypted. Heavy \u escaping in a script is usually a sign of deliberate obfuscation rather than a technical requirement — which is itself worth noting about the source.
Is it private and secure?
Your privacy is built in. JavaScript Unescape runs completely on your device, so whatever you enter stays in your browser and is never transmitted, logged or stored on any server.
Network activity: none. Nothing is sent and nothing is fetched. This tool makes no network request at all once the page has loaded — which is why it keeps working if your connection drops.
You do not have to take that on trust — our privacy proof page publishes the Content-Security-Policy that enforces it, lists every third party it permits, and shows how to verify the whole claim yourself.
Learn more
Working with JSON, XML and YAML: Format, Validate and Convert — Messy config or API response? Learn to pretty-print, validate and convert between JSON, XML, YAML and CSV in seconds.
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