Decompile Electron 20 .jsc Files
Electron 20 runs on the V8 10.x line. JSC Decompiler reads the V8 build straight from the bytecode header and turns compiled .jsc files back into readable JavaScript — no matching runtime required.
Bytecode fingerprint
Every .jsc file opens with a 4-byte little-endian magic header that identifies the V8 code-cache format. Electron 20 files sit on the V8 10.x line, paired with Node.js 16.
No single magic is pinned for Electron 20. The decompiler reads the exact V8 version string from the file header instead. Not sure what you have? Analyze the header.
How to decompile a Electron 20 .jsc file
Upload at jscdecompiler.com
Drag and drop your Electron 20 .jsc file into the web app. Nothing to install.
Auto-detect the version
JSC Decompiler reads the magic header and selects the V8 10.x deserializer automatically — you never pick a version by hand.
Download the JavaScript
View the reconstructed source in the browser, copy it, or download the .js file.
Electron 20 version notes
- Electron 20 is built on Chromium 104 (the V8 10.x line, roughly 10.4) and bundles Node.js 16.
- Electron 20 was the first release to enable the V8 sandbox and renderer process sandboxing by default, but the code-cache format is standard V8 10.x.
- No dedicated magic is pinned for this build; the decompiler reads the V8 version from the file header on upload.
Electron 20 decompilation FAQ
What V8 version does Electron 20 use?
The V8 10.x line (Chromium 104, around 10.4).
Can JSC Decompiler read Electron 20 .jsc modules?
Yes. Upload each module and the V8 10.x deserializer is selected from the header automatically.
Related versions
Decompile Electron 20 bytecode now
Upload a Electron 20 .jsc file and get readable JavaScript back in seconds. No signup required for the free tier.