.JSONC File Extension
JSONC is a variant of JSON that permits single-line (//) and multi-line (/* */) comments, commonly used in developer tooling configurations like VS Code settings.
application/json
EF BB BF 7B
Format Architecture & Technical Specifications
The .JSONC file represents structured program code or hierarchical data serialization formatted in standard UTF-8 or ASCII character encodings. Files with the .JSONC extension are categorized under Code & Data and are widely utilized in modern computing environments for storing, rendering, and exchanging structured data. By verifying the header signature (EF BB BF 7B) using forensic byte inspection tools, users can authenticate file integrity and rule out disguised executable payloads.
How to Open .JSONC Files
1 Open .JSONC on Windows 11 & 10
Locate the .JSONC file in File Explorer. Right-click the file, select "Open with", and choose VS Code. To set this application as the permanent default, check "Always use this app to open .JSONC files" and click OK.
2 Open .JSONC on macOS (Apple Silicon & Intel)
In Finder, hold Control and click the .JSONC file, then hover over "Open With" to select Sublime Text or your preferred desktop application. To associate all .JSONC files, press Command+I (Get Info), expand "Open with", and click "Change All".
3 Open .JSONC on Linux & Unix Desktops
Open your file manager (Nautilus, Dolphin, or Thunar), right-click the .JSONC file, and choose "Open With Other Application". Select VS Code from the list or launch via terminal using native viewer commands.
4 Inspect .JSONC in AnyFileX In-Browser Viewer
Drag and drop the .JSONC file into the AnyFileX File Identifier to inspect its internal binary structure, confirm header integrity, and preview content without installing third-party utilities.
Compatible Software Programs
VS Code
windows, mac, linux • Free
Sublime Text
windows, mac, linux • Free
JetBrains IDEs
windows, mac, linux • Free
Security Considerations & Verification
Comments are ignored by JSONC parsers; Strip comments before passing to strict JSON endpoints Files ending in .JSONC should always be inspected for valid magic bytes to verify they match legitimate Code & Data specifications.
- Inspect File Header: Use the AnyFileX Magic Byte Detector to verify that the first bytes match EF BB BF 7B.
- Prevent Extension Spoofing: Ensure "File name extensions" is checked in your OS file manager to detect disguised double extensions (e.g., file.JSONC.exe).
- Verify Checksum Integrity: Calculate SHA-256 or MD5 hashes against source downloads using our online Checksum Verifier.
- Inspect Container Structure: If JSONC files fail to launch, verify whether the file was truncated during download or corrupted in transit.
Frequently Asked Questions
What is a .JSONC file?
A .JSONC file is a JSONC File Format associated with Code & Data. JSONC is a variant of JSON that permits single-line (//) and multi-line (/* */) comments, commonly used in developer tooling configurations like VS Code settings.
How do I open a .JSONC file on Windows or Mac?
You can open .JSONC files using VS Code, Sublime Text, JetBrains IDEs. If you do not have native software installed, you can use AnyFileX's free File Identifier or convert .JSONC to a standard format in your browser.
Is a .JSONC file safe to open?
This format carries a safety rating of Low Risk. Comments are ignored by JSONC parsers; Strip comments before passing to strict JSON endpoints Files ending in .JSONC should always be inspected for valid magic bytes to verify they match legitimate Code & Data specifications.
Can I convert a .JSONC file to other formats?
Yes! .JSONC can be converted to formats such as .JSON directly in your web browser.
What should I do if a .JSONC file is corrupted or won't open?
If your .JSONC file displays an invalid header or signature error, check its magic bytes hex header (EF BB BF 7B) using AnyFileX's Magic Byte Detector or follow our step-by-step file repair guide.
How do I open a .JSONC file without installing software?
You can inspect and view .JSONC files directly in your web browser using AnyFileX tools such as the File Identifier and Hex Viewer, which process files 100% locally in browser memory without server uploads.
Can a .JSONC file contain viruses or malware?
Files with the .JSONC extension are rated as Low Risk. While legitimate files are standard, attackers often disguise dangerous executables by renaming them. Always verify magic bytes before running unknown files.
How can I convert a .JSONC file to another format?
You can convert .JSONC files to standard formats using AnyFileX in-browser converters or compatible desktop software like VS Code. In-browser conversion ensures 100% privacy with zero data transfer to external servers.