Short-form PreflightLocal in your browser

Why safe-zone numbers disagree

Look up a TikTok safe zone in three places and you'll get three different sets of numbers. They're usually not typos. They're different measurements, and here's how to tell them apart.

A real example from this project

This tool keeps every TikTok measurement it has used, including the ones it no longer uses for results. All three are scaled to a 1080 × 1920 frame, and they disagree on where the right-hand action column starts and ends:

TikTok right-hand action column, three sources (1080 × 1920 px)
SourceLeft edgeTopBottom
Independent measurement of a 375 × 667 mobile web playerx = 901y ≈ 809y ≈ 1757
Another published measurement, recorded as a notex = 918y = 730y = 1536
Our phone capture (Galaxy S20 Ultra, TikTok 47.0.3)x = 936y = 1223y = 1920 (video ends)

Only the phone capture feeds Safe / Warning / Overlap today. The other two are kept as records and are never averaged with it. See the TikTok guide for why.

None of these is "wrong". Each one answers a slightly different question. The sections below explain what each measurement choice changes.

1. Screen pixels or video pixels

Most phones today are taller than 9:16. When a 9:16 video plays on them, the video doesn't fill the whole screen. The app shows it in a 9:16 window and uses the leftover space above and below for its own interface.

In our Reels capture, the screenshot was 900 × 2000 but the video window was 900 × 1601, starting 148 px from the top. The status bar and camera icon sat above the video. The caption text and the comment bar sat below it. That's why the Reels regions here only include the parts that actually overlap the video: the action column and the profile and audio row. In the TikTok capture, only the status bar was outside the video. The tab row at the top was drawn on top of the video.

A guide that measures from the top of the screen will report bigger dead zones than one that measures from the top of the video, and both can be right for their own phone. When a guide doesn't say which one it used, its numbers are hard to reuse.

2. Web player or app

Some published figures come from a mobile-sized web player rather than the phone app. The web player and the native app don't always draw the same interface in the same place. That's one likely reason the first row in the table differs from the phone capture.

3. Which screen state was measured

The same app shows different interface depending on what's on screen. Of 19 TikTok screenshots reviewed for this project, only 5 were a plain For You feed. The rest had search results, ad labels, event badges, pinned comments, photo carousels, pause controls or an expanded caption. Of 15 Reels screenshots, 9 were a plain single Reel. The others had collection or hashtag headers, carousel badges or preview controls.

Each of those states moves or adds interface. A number measured on one state doesn't automatically apply to another. Caption length is the most common example, because a longer caption takes up more of the bottom.

4. What counts as the "region"

Some guides outline the visible icons. Others outline the touch area, which is larger. Others give a margin band along each edge. Others pad everything for comfort. The Shorts reference in this tool is the margin-band kind: four bands, not button outlines. Two guides can measure the same screen and still publish different numbers because they drew the boxes differently.

5. When it was measured

Apps rearrange buttons in updates. A figure without an app version or date may describe a layout that has already changed. Every region in this tool shows its source and a date. For our own captures that's the capture date. For a published measurement it's the date the source gives.

How to read any safe-zone guide

If a guide answers none of these, treat its numbers as a rough starting point and check your own video on a phone.

What this tool does with that

Only evidence marked current is used for Safe / Warning / Overlap and Find safer position. Sources are never averaged or merged. Each preview lists where its regions come from, how confident that measurement is and what it doesn't cover. The platform guides list every region with its numbers.