Why Your Slide Text Is Getting Cut Off

Your slides look right in the editor, then you post them and the headline is sitting behind the caption or under the share button. The size isn't the problem. TikTok draws its own interface on top of your slide, and that interface doesn't move out of the way for your design.

Where the interface sits

Three parts of the frame are not yours to use:

The bottom carries your username, the caption and the sound. A long caption can eat a serious portion of the lower third, and you don't know how long it will be until you write it.
The right edge carries the profile picture, like, comment, bookmark and share buttons, and the spinning sound disc. That column runs a long way up the frame.
The top is usually clear, but a small amount is lost on phones with a notch or a dynamic island.

The area left over is the safe zone. It is smaller than people expect, and it is not centred perfectly — the right edge loses more than the left.

The working rule

Keep anything that has to be read inside a centred box with roughly 15% clear on every side. On a 1080 × 1920 slide that is about 160px in from the left and right and 290px from the top and bottom.

That sounds conservative, and it is. The payoff is that your slide reads correctly on every phone, with any caption length, whether or not the viewer has the comment sheet half open.

PXT's templates already place text inside the safe zone, so building from a template is the fastest way to avoid this entirely.

Three things that make it worse

Text pinned to the bottom of the slide. The most common version of this problem. If your payoff line sits at the bottom, the caption will land on it.
Text running to the right edge. Long headlines that fill the width disappear under the button column, usually losing the last word or two of each line.
Different text positions on different slides. Even when each slide is individually inside the safe zone, text that jumps around between slides reads as sloppy while someone is swiping.

Check it before you post

The reliable test is to look at a slide on a phone at full size, not at editor scale on a laptop. Text that reads comfortably in a small preview is often the text that gets clipped, because you're judging the design without the interface that will sit on top of it.