JSON Viewer

v1.0.0·Added in 1.0.0

A collapsible JSON tree with type colors, search that opens the matching branches, copy value or path, and virtualization for huge payloads.

Click or tap a branch to open or close it: the chevron turns and small branches slide open. Collapsed objects show their first keys and arrays their first values, with a count. Type in the search box (or press Ctrl+F / ⌘F while inside the viewer) and every key or value that matches is highlighted, its branches open and the first hit scrolls to the middle; Enter and Shift+Enter or the arrows step through the hits and the counter reads 2 of 5. Escape clears the search, a second Escape returns to the tree. With a mouse, hovering a row shows Copy value and Copy path; on a phone a long press opens a sheet that repeats the value (and a date in local time) with the same actions plus Expand all from here. The toolbar expands or collapses everything, copies the whole JSON and downloads it as a dated .json file; below 512px of width it folds into a ⋯ menu. The tree is one Tab stop: Up and Down move, Right opens or steps into a branch, Left closes it or goes to the parent, Home and End jump, * opens every sibling, Enter toggles a branch or selects a value, c copies the value and Shift+C its path, and the context menu key opens the row's actions. Long strings stop at maxStringLength with a Show more button (Right and Left on the row show and hide the rest), arrays over 100 items open in pages of 100, and above 300 visible rows only what is on screen is rendered.