How to open a JSON file online
Three steps, a few seconds, no software.
Open your .ATN file
Drop it on the box, choose it from your device, or paste the data straight in.
View the structure
Your .ATN 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 .ATN file?
The most common data format on the web.
An ATN file is a set of recorded Adobe Photoshop Actions - a saved macro that replays a sequence of editing steps with one click. You do not open it like an image; you load it into Photoshop's Actions panel and then play it on your files. Only Adobe Photoshop (and to a lesser extent Photoshop Elements) can run ATN actions - free editors like GIMP cannot.
Programs that open .ATN files
| Full name | Adobe Photoshop Actions |
|---|---|
| Developer | Adobe Systems (Adobe Inc.) |
| First released | Adobe Photoshop 4.0 (1996, when Actions were added) |
| Category | Text & Code |
| MIME type | application/octet-stream |
Related viewers
Every viewer is free to use.
Frequently asked questions
Is my .ATN file uploaded anywhere?
No. The file is opened directly from the copy you pick.
My .ATN 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.
Was this tool helpful?
Your rating helps us decide which tools to improve next.