OpenAnyFile
What is a .jsonc file?
JSON with Comments is a data format developed by Microsoft (VS Code), first released in 2016. It is usually created by VS Code settings, TypeScript tsconfig.
JSON that allows // and /* */ comments. Comments are stripped and the rest is shown as a tree.
File details
| Full name | JSON with Comments |
|---|---|
| Category | Data & science |
| MIME type | application/json |
| Developer | Microsoft (VS Code) |
| Introduced | 2016 |
| Opens with | JSON viewer |
| Uploaded? | No — read locally in your browser |
How to open a .jsonc file
OpenAnyFile routes .jsonc files to its JSON viewer, which shows the data neatly formatted.
- Drop your .jsonc file on the box above, click it to choose the file, or paste it with Ctrl+V.
- The real format is detected from the file's first bytes — not just its name.
- The file opens in the JSON viewer.
- Use fullscreen for a closer look, check its checksums, or download it back unchanged.
What works — and what does not
Works
Viewing and inspecting: the data neatly formatted. Size, type, signature and checksums are always shown.
Does not work
Editing and saving back. OpenAnyFile is a viewer, not an editor — for changes you still need the original app.
Is it safe to open a .jsonc file online?
Here, yes — because nothing is uploaded. Most "online viewers" send your file to their server. OpenAnyFile reads it with your browser's File API and decodes it on your own device, so there is no copy anywhere else. You can check: open your browser's network tab while opening a file — no upload appears.
Questions about .jsonc files
Can I open a .jsonc file without installing software?
Yes. OpenAnyFile opens .jsonc files in your browser using its JSON viewer. You get the data neatly formatted, with nothing installed and no account.
How do I know a file is really a .jsonc file?
Check its first bytes instead of its name. This format has no fixed signature, so the detected type and the readable content are the best clues. OpenAnyFile shows the detected type, so a renamed file is easy to spot.
Is my .jsonc file uploaded anywhere?
No. The file is read locally by your browser and never sent to a server — it even works offline once the page has loaded.
Does it work on phones?
Yes — on Android and iPhone, in any modern browser. You can also install OpenAnyFile as an app.
Related formats
Other formats from the same family:
Format facts checked and page updated on September 25, 2026.