How to open a JSON file online
Three steps, a few seconds, no software.
Open your .AU3 file
Drop it on the box, choose it from your device, or paste the data straight in.
View the structure
Your .AU3 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 .AU3 file?
The most common data format on the web.
An AU3 file is an AutoIt v3 script - a plain-text Windows automation script that simulates keystrokes, mouse clicks, and GUI interactions. Open it with the free AutoIt package (SciTE4AutoIt3 editor) or any text editor. The main concern is security: AutoIt is widely abused by malware authors, so always verify the source before running one.
Programs that open .AU3 files
| Full name | AutoIt v3 Script |
|---|---|
| Developer | AutoIt Team (Jonathan Bennett) |
| First released | 2004 (AutoIt v3.0) |
| Category | Text & Code |
| MIME type | text/plain |
Related viewers
Every viewer is free to use.
Frequently asked questions
Is my .AU3 file uploaded anywhere?
No. The file is opened directly from the copy you pick.
My .AU3 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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