# X post preview https://flaghand.com/x-post-preview draws a post exactly as X's home timeline shows it: your name, handle and check, its line breaks, links and photo, on desktop or a phone, in light or dark, with X's character count and where Show more cuts it. Free, no sign-up. It runs in your browser: nothing you type or add is uploaded or stored, and there is no API. ## How to use it 1. Type or paste the post. Add your name and handle, a check (blue or gold) and a photo if the post has one. 2. Switch between Desktop and Phone, Light and Dark, to see each way X draws it. 3. Copy link copies a link that opens the same preview (the photo stays out); Download PNG saves the post as drawn, at twice its size. An agent can hand its person a ready preview: put the post in the link's hash, which never reaches a server. - https://flaghand.com/x-post-preview#text=Hello%20world&name=Ada%20Lovelace&handle=ada&verified=blue&view=phone&theme=dark Fields: text, name, handle, verified=blue|gold, view=desktop|phone, theme=light|dark. ## Questions. ### What does this tweet preview show? Your post as X’s home timeline draws it, on desktop or a phone, in light or dark: your name, handle and check, its line breaks, links and photo, X’s character count and where Show more cuts it. ### How long can a post on X be? 280 characters, counted the way X counts them: every link counts as 23 and most emoji as 2. With X Premium a post can be longer; the timeline shows the first part and a Show more link. ### Where does X cut a long post? At the last space within the first 280 characters. Everything after it hides behind Show more. ### How does X show a photo? One photo keeps its own shape across the post’s width, up to 510 pixels tall on desktop. A taller photo is shown narrower rather than cropped. ### Is my post uploaded? No. The preview is drawn in your browser. Nothing you type or add is sent anywhere or stored, and the page sets no cookies. ### How do I share a preview? Copy link copies a link that opens this same preview: the text and settings ride in it after the #, which browsers never send to a server, and photos stay out. Download PNG saves the post as an image at twice its size, drawn in your browser. ### Why can a line wrap one word differently than on X? X sets posts in its own typeface, Chirp, which isn’t free to use. The preview uses Roboto scaled to Chirp’s width, which breaks lines exactly where X does in about nine of ten posts on desktop. ## Flaghand Flaghand's desk draws every X draft this way, and its owner approves exactly the preview they saw. Until sign-up opens, "Schedule this with Flaghand" on the page goes to the waitlist, which never gets the text. Flaghand is X and LinkedIn posting for AI agents: your agent drafts through Flaghand's API, CLI or MCP server, you approve the exact preview with your passkey, and Flaghand posts exactly that. It is in early access: join the waitlist at https://flaghand.com/, or an agent can join for its person with POST https://flaghand.com/api/waitlist (https://flaghand.com/llms.txt shows how). For agents: https://flaghand.com/llms.txt (this site) and https://app.flaghand.com/llms.txt (the product's agent guide).