# SkimFast > Chrome extension that opens any X (Twitter) post's full reply thread in a popover — read replies without leaving your feed or clicking back and forth. SkimFast adds a "Skim" button beside each post on x.com. Click it to read the whole thread inline: sort replies, jump to the top one, open any branch, view inline media — all without leaving your timeline. One-time purchase, works on up to 3 devices, private by design (no servers, no analytics). ## Pages - [Home](https://skimfa.st): What SkimFast does, features, pricing, and FAQ. - [Privacy Policy](https://skimfa.st/privacy): What the extension does and does not collect. - [Full text for LLMs](https://skimfa.st/llms-full.txt): Everything on one page. ## Facts - Platform: Google Chrome (Manifest V3 browser extension) - Price: $9.99 one-time (lifetime), up to 3 devices - Privacy: runs in your browser; no servers, no tracking; only your license key is sent out, to verify the purchase - Access: works on your own logged-in X; it only shows threads you could already see