Click the "Select File" button above, and choose your JSC file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert JSC to another file type
To convert JSC Compiled scripts to another format, you need Apple WebKit or other Developer software.
Convert a file to JSC
To convert other file formats to the "Compiled Source Code" file type, you need software like Apple WebKit or a similar tool.
About JSC files
The .JSC file extension primarily denotes Compiled JavaScript Bytecode. Standard JavaScript (Wikipedia) is delivered as human-readable text. However, environments like Apple WebKit (using JavaScriptCore), Node.js (via the bytenode module for the V8 engine), and mobile frameworks like React Native (using the Hermes engine) compile script into this binary bytecode format. Developers use .JSC files to improve application startup times in platforms like Electron and Cocos2d games, and to obscure proprietary source code from casual inspection. The main disadvantage of the .JSC format is its extreme opacity. It is a closed, machine-readable binary. Files cannot be opened or edited in a standard text editor without showing garbled text. Furthermore, bytecode compiled for the V8 engine is highly version-dependent; a .JSC file compiled on Node v14 will instantly crash on Node v16. Users frequently need to convert .JSC back to JS to audit code, recover lost project files, or modify game logic. However, standard online converters completely fail to process it because decompilation requires reverse-engineering engine-specific memory opcodes. Converting .JSC to JS will always result in stripped variables and lost comments.
Convert.Guru analyzes your JSC file, detects the exact format, and lets you read the text inside.
If you want to convert JSC file to JS, TS, PY, JAVA, CPP, C, CS, PHP, RB, GO, RS or SWIFT, you can use Apple WebKit or similar software from the "Compiled JavaScript Bytecode" category. In the File menu, look for Save As… or Export….
To convert SH, PY, KT, PS1, SWIFT, LUA, PL, JAVA, SCALA, JS, VBS or TS files to JSC, try Apple WebKit or another comparable tool in the "Compiled JavaScript Bytecode" category.
The JSC Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our JSC converter.