How to open a JSON file online
Three steps, a few seconds, no software.
Open your .XSL file
Drop it on the box, choose it from your device, or paste the data straight in.
View the structure
Your .XSL 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 .XSL file?
The most common data format on the web.
An XSL file is an XSLT stylesheet, a small XML program that transforms an XML document into HTML, plain text, or another XML format. Open it in any text editor or Visual Studio Code to read and edit it. To see what it produces, run it against an XML input using an XSLT processor such as xsltproc or Saxon, or open the referencing XML in a browser.
Programs that open .XSL files
| Full name | XSLT Stylesheet (Extensible Stylesheet Language Transformations) |
|---|---|
| Developer | W3C (World Wide Web Consortium) |
| First released | 1999 (XSLT 1.0, W3C Recommendation, November 16, 1999) |
| Category | Text & Code |
| MIME type | application/xslt+xml |
| Signature | 3C 3F 78 6D 6C " |
Related viewers
Every viewer is free to use.
Frequently asked questions
Is my .XSL file uploaded anywhere?
No. The file is opened directly from the copy you pick.
My .XSL 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.