Wikipedia: enlarge thumbnails on click
Lets you click a thumbnail to enlarge it right inside the article without opening the file page.
Code to copy
// Click a thumbnail to enlarge it inline without opening the file page
function setupThumbZoom() {
const imgs = document.querySelectorAll('.mw-parser-output .thumb img');
imgs.forEach(function (img) {
if (img.dataset.jzZoom) { return; }
img.dataset.jzZoom = '1';
img.style.cursor = 'zoom-in';
img.addEventListener('click', function (e) {
e.preventDefault();
e.stopPropagation();
const big = img.dataset.jzBig === '1';
img.style.maxWidth = big ? '' : '100%';
img.style.width = big ? '' : 'auto';
img.style.height = big ? '' : 'auto';
img.style.transform = big ? '' : 'scale(1)';
img.style.cursor = big ? 'zoom-in' : 'zoom-out';
img.dataset.jzBig = big ? '0' : '1';
}, true);
});
}
setupThumbZoom();
new MutationObserver(setupThumbZoom).observe(document.body, { childList: true, subtree: true });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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