Tree and text, side by side
Change a value in the tree, or type in the code view with search and folding. Select a value in the tree and the code view jumps to its line. Undo and redo cover every edit.
jsonloupe
Online JSON editor
Paste JSON and edit it as a tree, as text, or both side by side. Every edit can be undone, and the file never leaves this tab.
Most editors load 1234567890123456789 as 1234567890123456800. This one keeps every digit, through every edit, copy and download.
0 bytes uploaded · no account · free
Paste JSON
nothing leaves this tab
broken JSON — trailing commas, single quotes, cut-off logs — is repaired and flagged, and the original text is kept
⌃↵ to edit
What this editor does differently
Broken JSON gets fixed
Trailing commas, single quotes, Python True and None, and log extracts cut off half way are repaired. The repair is flagged, and the original text is kept.
Long IDs keep every digit
A 19-digit order number or a long decimal price stays exactly as you typed it. Nothing is turned into a rounded number on the way in or on the way out.
Big files stay fast
The tree draws only the rows on screen, and the heavy work runs in the background, so a file with millions of items opens and scrolls without freezing the tab. Files up to 200 MB open.
Find anything
Search by text or by pattern, filter the tree down to the matches, and copy the path of any value with one click.
undo / redo
⌘S to apply
download .json
Why nothing is uploaded
The editor runs inside this browser tab. Your file is read here and nowhere else. There is no server to send your file to, which is why it keeps working with your wifi off. Nothing is logged, counted, or kept anywhere but your own computer.
bytes uploaded0
account needednone
works with wifi offyes
pricefree · MIT