Pretty-print raw page JSON
If the page is raw JSON, it parses and re-displays it with readable indentation instead of one line.
Code to copy
try {
const raw = document.body ? document.body.textContent.trim() : '';
if (raw && (raw[0] === '{' || raw[0] === '[')) {
const parsed = JSON.parse(raw);
const pre = document.createElement('pre');
pre.textContent = JSON.stringify(parsed, null, 2);
pre.style.cssText = 'font:13px monospace;padding:12px;'
+ 'white-space:pre-wrap;word-break:break-word;';
document.body.innerHTML = '';
document.body.appendChild(pre);
} else {
console.log('JustZix: page body is not raw JSON');
}
} catch (err) { console.error('JustZix JSON pretty-print:', err); }How to use this example
- Copy the code with the button above.
- Install JustZix (2 minutes) and open the extension on the target page.
- Add a new rule matching that page.
- Paste the code into the rule's JavaScript panel and save — it runs on every page visit.
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