Character and media limits

Each network sets its own rules, which is why the same post can publish to LinkedIn and be refused by Instagram. Ocoya checks a post against these before publishing and tells you which limit it breaks.

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Caption limits

Where a network shows two numbers, the first is what fits in one post and the second is the point at which Ocoya refuses the post. Between the two, Ocoya splits your text into a thread — see Long posts and threads.

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Image limits

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Video limits

Bluesky and Google Business take no video at all — attach one and the post is refused. YouTube Shorts is the mirror image: it takes a video or a GIF and no still images. Instagram Reels are a separate case: up to 1,000 MB, between 3 seconds and 15 minutes.

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Other rules worth knowing

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Image shapes

Instagram accepts a limited range of shapes and Ocoya crops to fit:

• Landscape — 1.91:1
• Portrait — 4:5

If an image is cropped differently than you expected, it was outside that range. Crop it yourself first to control what’s kept.

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