How to open a JSON file online
Three steps, a few seconds, no software.
Open your .ADM file
Drop it on the box, choose it from your device, or paste the data straight in.
View the structure
Your .ADM 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 .ADM file?
The most common data format on the web.
An ADM file is a Windows Group Policy Administrative Template - a plain text file that defines registry-based policy settings for the Group Policy Object Editor. It was the standard format from Windows 2000 through XP and was replaced by ADMX in Windows Vista. Open it in Notepad to read it, or load it into gpedit.msc to apply policies.
Programs that open .ADM files
| Full name | Windows Group Policy Administrative Template |
|---|---|
| Developer | Microsoft Corporation |
| First released | Windows 2000 (2000) |
| Category | Text & Code |
| MIME type | text/plain |
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Frequently asked questions
Is my .ADM file uploaded anywhere?
No. The file is opened directly from the copy you pick.
My .ADM 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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