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Will this post go viral?

Paste a draft and get the viral score, the odds, and every reason with a fix before you publish. Under a second, no login.

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How to check a post

  1. 1

    Paste your draft

    Drop in the post you are about to publish, up to 2,000 characters.

  2. 2

    Get the odds

    A 0 to 100 viral score and the chance of clearing 10,000 impressions, in under a second.

  3. 3

    Read every reason

    Each factor shows its impact on the score and a concrete fix for the negative ones.

  4. 4

    Fix and re-check

    Edit the draft and run it again until the drags are gone.

What the checker looks at

  • Reach killers: links in the body, hashtags, a leading @mention, engagement bait, insults, all-caps, emoji density.
  • The hook: does the first line stop a stranger, or warm up? Questions, numbers and contrarian framing lift it.
  • Ranker actions: calibrated odds of replies, shares and follows — and the risk of a mute or report, the heaviest negative on X.
  • Structure: thread and list formats, walls of text, and length in the sweet spot.

Frequently asked questions

How does the viral post checker decide?
Two layers. Deterministic rules catch what X's ranker punishes or rewards: links in the body, hashtags, engagement bait, a leading @mention, length, all-caps, emoji density, weak openers, questions and specifics. A decision model then reads the post and returns calibrated probabilities for the actions the ranker pays for — replies, shares, follows — and the risk of mutes or reports.
What is a good score?
55 and above means the post is likely to travel beyond your followers. 75 and above is strong. Under 30 usually means a reach-killer is in the post: a link, hashtags, bait, or a first line that does not stop the scroll.
Why does a link lower the score so much?
X down-ranks posts that send people off-platform; links in the body routinely halve reach. Put the link in the first reply instead.
Is it free?
Yes, with a daily limit and no account needed. Xpert members get unlimited checks scored against their own post history, what already went viral in their niche, their best posting hours, and account size.

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Want more than a one off tool? Xpert drafts posts in your voice, schedules them at your best times, and keeps score with you.

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