How to open a JSON file online
Three steps, a few seconds, no software.
Open your .DISKDEFINES file
Drop it on the box, choose it from your device, or paste the data straight in.
View the structure
Your .DISKDEFINES 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 .DISKDEFINES file?
The most common data format on the web.
A diskdefines file (usually named README.diskdefines) is a small plain-text file found at the root of Ubuntu and Debian Linux disc images. It holds a few #define lines that identify the disc name, type, and CPU architecture. Any text editor opens it. You do not need to do anything with it unless you are building a custom Linux LiveCD.
Programs that open .DISKDEFINES files
| Full name | Linux LiveCD Disk Metadata File |
|---|---|
| Developer | Canonical Ltd. (Ubuntu); adopted broadly in the Debian/Ubuntu ecosystem |
| First released | ~2004 (with early Ubuntu / Debian Live CD tooling; diskdefines convention codified in Ubiquity installer) |
| Category | Text & Code |
| MIME type | text/plain |
Related viewers
Every viewer is free to use.
Frequently asked questions
Is my .DISKDEFINES file uploaded anywhere?
No. The file is opened directly from the copy you pick.
My .DISKDEFINES 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.