TikTok Cover Image Size Guide (2026)

TikTok’s video-cover frame is vertical, roughly 1080x1920 pixels — a 9:16 ratio that fills a phone screen edge to edge. A square profile photo or a landscape screenshot dropped into that frame either gets cropped tight (cutting off the top and bottom of your subject) or letterboxed with blank bars on the sides. Neither looks intentional.

Why creators run into this constantly

Most source photos aren’t shot vertically. A phone photo taken normally, a screenshot from a wider video, or a square Instagram export are all the wrong shape for a TikTok cover. Re-shooting every cover vertically is unrealistic when you’re posting daily — the practical fix is reshaping the photo you already have.

Expanding instead of re-shooting

An ai expand image tool tuned for TikTok takes the existing square or landscape photo and extends the surrounding scene — sky, wall, background — vertically to fill the 9:16 frame. Because the expansion continues the same lighting and setting already in the photo, the result reads as one continuous shot rather than a photo pasted onto a new background.

Steps:

1. Open the TikTok Cover preset — the canvas locks to the 9:16 ratio automatically.
2. If your source photo has a distinctive background (a specific room, a patterned wall), add a direction like “continue the same wall and lighting” so the model matches what’s already there rather than generating something generic.
3. Generate, then inspect the new edges at 100% zoom — faces and hands near the crop line are the details worth checking closely, since human features are one of the harder cases for any expansion model.
4. Download and upload directly — no further cropping needed once the output matches TikTok’s 9:16 cover ratio.

The honest limitations

TikTok covers are small, fast-scrolling thumbnails, so viewers won’t scrutinize fine detail the way they would a printed photo — but a visibly warped hand or a background seam still reads as “off” even at thumbnail size. Treat the first result as a draft: if the expanded area looks subtly synthetic next to a busy or unusual background, it’s worth trying a second generation with a more specific direction before publishing.

Also worth knowing: TikTok will accept other ratios and crop them automatically, so this isn’t a hard technical requirement. But creators who match the 9:16 cover ratio consistently get a cleaner, un-cropped presentation in the feed, which is why it’s worth the extra step.

Related reading

If you post the same content across more than one platform, see the Instagram Story guide — the same source photo can be expanded once per platform rather than re-shot for each one. For a wider look at what AI expansion can and can’t do reliably, see When Uncrop AI Can’t Save a Bad Crop.

Try the TikTok Cover preset directly — 2 free previews, no sign-up required.