How to open a JSON file online
Three steps, a few seconds, no software.
Open your .HAR file
Drop it on the box, choose it from your device, or paste the data straight in.
View the structure
Your .HAR 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 .HAR file?
The most common data format on the web.
A HAR file is an HTTP Archive, a JSON log of every network request a browser made during a session. Open it by dragging it onto the Google HAR Analyzer or into browser DevTools (F12 > Network). Before sharing one, sanitize it: a HAR stores cookies, auth tokens, and passwords in plain text.
Programs that open .HAR files
| Full name | HTTP Archive |
|---|---|
| Developer | W3C Web Performance Working Group (originally Jan Odvarko / Firebug, with the Web Performance WG) |
| First released | 2007 (HAR 1.1 draft, Firebug Net panel); W3C draft 'HTTP Archive (HAR) format' 2012 |
| Category | Text & Code |
| MIME type | application/json |
Related viewers
Every viewer is free to use.
Frequently asked questions
Is my .HAR file uploaded anywhere?
No. The file is opened directly from the copy you pick.
My .HAR 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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