Slack: expand truncated messages
With Alt+E it clicks every "show more" button to fully expand truncated message blocks at once.
Code to copy
// Press Alt+E to expand every collapsed message block in the channel
function expandAll(e) {
if (e.altKey && (e.key === 'e' || e.key === 'E')) {
e.preventDefault();
let n = 0;
document.querySelectorAll('[data-qa="show_more_button"], .c-message__expand_button').forEach(function (btn) {
btn.click();
n++;
});
console.log('[Slack] expanded ' + n + ' truncated message blocks');
}
}
document.addEventListener('keydown', expandAll, 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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