JSON Unescape — Decode Escaped JSON Strings

Unescape escaped JSON strings back to readable, formatted JSON. Reverse of JSON escape with proper decoding. 100% client-side.

Escaped Input0 chars
Unescaped JSON Output—
Output:
🛡️Zero server logs. Unescape runs 100% inside your browser.
🛠️Developer Tool Belt
More Json ToolsJMESPath Tester — Query JSON with JMESPathJSON Key Extractor — Extract All Keys & PathsJSON Diff — Compare JSON Data OnlineJSON → XMLJSON → TypeScriptOpenAPI Generator — Create 3.0.3 Specs from JSONView all json tools →

JSON Unescape — Decode Escaped JSON Strings

Unescape escaped JSON strings back to readable, formatted JSON. Reverse of JSON escape with proper decoding. 100% client-side.

🔒 Client-side only⚡ Web Worker processing🌐 Works offline🛡️ Zero server logs

How to Use

  1. Paste your escaped JSON string into the input editor.
  2. Click Unescape to decode the string back to formatted JSON.
  3. Copy the readable JSON for use in your application or debugging.

Frequently Asked Questions

Questions about this tool? We've got answers.

What format of escaping is supported?

Standard JSON string escaping including \", \\, \n, \t, and \uXXXX Unicode sequences are all properly decoded.

Is this the reverse of JSON Escape?

Yes. This tool reverses the encoding done by JSON Escape, restoring escaped characters back to their original form.

Is my data sent to a server?

No. All processing runs 100% inside your browser via a Web Worker.

Automated E2E Test Suite Logs

Our build systems validate edge-case processing under extreme conditions before each deployment.

Stability
100.0%
Passed
17/17
Env
V8-Sandbox
Engine: Vitest RunnerUpdated: 2026/6/11 00:18:12📦 Download Test Datasets
PASSunescapeJson unescapes simple escaped JSON
PASSunescapeJson unescapes with backslash sequences
PASSunescapeJson unescapes nested JSON
PASSunescapeJson handles empty object
PASSunescapeJson handles arrays
PASSunescapeJson throws on empty input
PASSunescapeJson throws on invalid input
PASSJsonUnescapeTool renders Unescape button
PASSJsonUnescapeTool renders Escaped Input and Unescaped JSON Output labels
PASSJsonUnescapeTool renders two textareas
PASSJsonUnescapeTool shows privacy strip
PASSJsonUnescapeTool shows error toast on Unescape with empty input
PASSJSON Unescape Worker Standard unescape operations should unescape simple escaped string
PASSJSON Unescape Worker Standard unescape operations should unescape string with escape sequences
PASSJSON Unescape Worker Boundary Conditions & Error Handling should return error for bad escape input
PASSJSON Unescape Worker Boundary Conditions & Error Handling should return error for empty input
PASSJSON Unescape Worker Performance Benchmark should process large escaped string within acceptable limits
⏱️ 0.18ms📦 1.5KB🎚️ Max Nesting: 3🌿 AST Nodes: 48🛡️ V8 Heap: Healthy
$ codecaven-validator --scope=tool● CLUSTER COMPLIANT

Tool Changelog & Updates

1.0.02026-06-10
  • Feature: Initial release