Preflight.social
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    Free tools

    Free social media tools

    The checks Preflight runs before a scheduled post goes out, opened up for anyone to use on a caption or a file. No account, nothing uploaded, and the verdict comes from the same validator the product uses — not from a table copied off a help page.

    • YouTube
    • TikTok
    • Instagram
    • Facebook
    • Threads
    • LinkedIn
    • Pinterest
    • Bluesky
    • Mastodon
    • Telegram
    • Discord
    • Tumblr

    Character counter

    Counts a caption the way twelve networks count it — graphemes, bytes, links — and says which refuse it.

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    Video and image checker

    Reads a file's size, length, format and dimensions in your browser and checks them against every network's limits.

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    Caption preview

    Shows where Instagram, LinkedIn, Facebook and the rest fold a caption behind “more”.

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    Every network's limits, on one pageCharacters, hashtags, file sizes, video lengths and formats for all twelve networks, kept in step with the code that enforces them.Run the same checks on every post you schedulePreflight checks each post against every network's rules as you write it, then publishes it. Free plan, no card.

    Write it once. Let the rules be our problem.

    Preflight checks every post against each network's rules before it leaves, then publishes it to twelve networks. Free plan, no card.

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