How to open a JSON file online
Three steps, a few seconds, no software.
Open your .CIRC file
Drop it on the box, choose it from your device, or paste the data straight in.
View the structure
Your .CIRC file opens as a tidy, foldable tree, with the exact line of any error pointed out.
Search, copy or download
Search keys and values, copy any path or value, switch to a table, or download a clean copy.
What is a .CIRC file?
The most common data format on the web.
A .circ file is a Logisim circuit design file, an XML document that describes digital logic gates, wires, and components for simulation. Open it with Logisim-evolution (free, Windows/macOS/Linux), the actively maintained successor to the original Logisim, which was retired in 2014. The file itself is plain text and carries no safety risk.
Programs that open .CIRC files
| Full name | Logisim Circuit File |
|---|---|
| Developer | Original: Carl Burch (Logisim, retired 2014); active fork: Logisim-evolution (community project, logisim-evolution/logisim-evolution on GitHub) |
| First released | ~2001 (Logisim by Carl Burch) |
| Category | Text & Code |
| MIME type | application/xml |
Related viewers
Every viewer is free to use.
Frequently asked questions
Is my .CIRC file uploaded anywhere?
No. The file is opened directly from the copy you pick.
My .CIRC file is invalid. Can you fix it?
We show the exact line and column of the first error. For common problems like comments, trailing commas, single quotes or Python-style True/False/None, click Try to repair and download the fixed file.
How large can the file be?
Up to 50 MB. The tree only builds the branches you open, so even multi-megabyte files stay responsive.
What is JSONPath?
A path like $.orders[3].customer.email that points to one value inside the data. Click any node to see its path and copy it for code, jq or your API docs.
Can I see my data as a table?
Yes. Any array of objects can be shown in the Table view and downloaded as CSV.
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