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Readable JSON in the browser tab: tree view, path filter, search, exact big numbers, diff. No ads, no tracking. Open any JSON URL and get a clean, collapsible tree instead of a wall of text. Jaywalk keeps numbers exactly as the server sent them. Large IDs like 12345678901234567890 are shown as they are, not rounded the way JavaScript rounds them, and they get a small "exact" tag so you know. Find things fast: • Filter by path: $.items[*].name, $..id, [0:10], [-1] • Search keys and values, then press Enter to jump from hit to hit • Copy the path or the value of any line, or show only that branch See the shape of it: • Chart view draws the document as boxes and lines. Click a box to open it, drag to move, save the chart as SVG • Breadcrumbs above a focused value take you back up one step at a time Other formats: • Paste or open YAML and XML files and get JSON back (attributes become "@name") • Turn JSON into YAML, or a list of objects into CSV (cells that look like formulas are made safe) Everyday tools: • Raw / Parsed toggle, sort keys, copy, copy minified, save as .json • Ctrl+click a toggle to open or close all its siblings • Reads NDJSON and JSONP too • Broken JSON? You get the line and column, and the bad character is marked • Big responses stay quick: a 4 MB file opened in about half a second in our tests • Type `json` in the DevTools console to work with the data • Compare two JSON documents side by side; array items are matched by id when they have one • Light, dark or follow the system • Turn it off for sites you choose, add content types your servers misuse, add your own CSS • Converting XML or an object to CSV tells you what was left out, so nothing goes missing quietly Limits: • Works on pages served as JSON, or as text/plain that starts with { or [. JSON wrapped in an HTML page, or sent with another content type, is left alone; you can add such content types in Settings. • text/plain pages over 200 MB are not treated as JSON. The paste/compare page opens files up to 50 MB. • file:// pages work only after you turn on file access for Jaywalk in the extension settings. Store pages and browser pages cannot run extensions. • The DevTools `json` variable uses the browser's own parser, so big numbers are rounded there; the tree, copy, save and compare keep them exact. • XML to JSON does not keep comments, processing instructions or the DOCTYPE, and text mixed with child elements loses its position. Jaywalk tells you when this happens. • YAML tags (!!type) and merge keys (<<) give an error instead of a wrong result. • The chart draws up to 50 children per box and 3,000 boxes; the rest shows as "more". Privacy: Jaywalk sends nothing anywhere. No analytics, no ads, no affiliate code, no pop-ups. It only stores your settings (theme, skipped sites, extra content types, your CSS).