What Is the Reels Safe Zone, and Which Size Should You Use?
A vertical video can be the right size and still hide its sentence. The phone lays its own buttons, caption and account name over the picture. That overlap is the safe zone. It is not a reach formula.
The recommended frame is 9:16 at 1080×1920
The Reels publishing requirements in Meta's sample repository recommend 9:16 to avoid cropping and blank bars. The same text sets 1920 as the maximum number of horizontal pixels. The production size that fills a phone is 1080×1920: 1080 wide, 1920 tall. That pair is 9:16, and it sits under the 1920-pixel width cap. A wider 9:16 file can still fit up to that cap. This article does not ban another size. This is the frame it recommends producing.
Ratio is shape. Pixel count is the detail of that shape. 1080×1920 and a horizontal 1920×1080 carry a similar total of pixels. One is vertical, one is horizontal. Sitting a horizontal file on a vertical screen with black bars is not a frame built for Reels. What the ratio cuts out of the same shot is covered in the piece on aspect ratios.
The safe zone is not the edge of the video
The safe zone is not the region where all four edges of the file remain visible. The app lays its own interface over the video. An account name and audio can sit at the top, the caption at the bottom, and like, comment and share along one side. None of that is part of the video file. A line that is visible in the edit software's full frame can fall under this layer on a phone.
An organic Reel and a Reels ad do not have to cover the same edges. The ad placement has its own preview, and that preview changes. This article does not recite a percentage grid from memory. The percentage is read, on delivery day, from that placement's current preview. A grid copied without looking pastes an old interface onto a new screen.
| Region | What usually sits there | What not to do in the frame |
|---|---|---|
| Top band | Account name, audio | Pinning the logo and the title to the very top |
| Bottom band | Caption, account | Parking the offer, a price line and subtitles at the very bottom |
| Side | Like, comment, share | Leaning the sentence that must be read against that edge |
| Middle band | The video itself | Moving the subject and the line that must be read out of it |
Sitting in the middle does not raise reach
Meta publishes separate ranking explanations for Feed, Stories and Reels. Those pages do not say that keeping type inside the safe zone raises reach. No published formula turns a margin into reach. A source that writes such a sentence is offering its own guess. This article does not repeat that guess.
The question here is whether the sentence can be read. Why a number moves belongs to the piece on reach. If format and length are written apart in a social media calendar, the frame decision and the reach number do not get mixed. The calendar's fields are set up in the piece on the content calendar.
When type is burned into the video
The caption field is the interface itself. Writing the same sentence again along the bottom band of the video stacks a second line under the caption. Type, a logo and subtitles burned into the file should stay in the middle band. They live inside the file, and the interface can cover them.
If another ratio will be cut from the same master, burned-in type is cut with it. Type placed in the centre can disappear in a horizontal slice. Type placed at the edge can fall under the interface in the vertical one. That arithmetic is done before the shoot. If type is shrunk afterwards so that it fits, the sentence is present and still unreadable.
Fictional example
This example is not a client record. A bakery prepares a Reel at 1080×1920. The offer and the logo sit at the very bottom. Both are visible on the edit screen. On the phone the caption covers the offer. The file is the recommended frame. The sentence still cannot be read. This is not a reach story. It is a frame story.
Before you publish
If the lines below have no answer, the size has been chosen and the frame is not finished. The order runs from the file to the phone.
- Whether the file is 9:16, and whether the production size is 1080×1920 or another size of the same ratio.
- Whether the subject and the line that must be read sit in the middle band.
- Whether the logo, the offer and the subtitles are stuck to the top, bottom or side band.
- Whether the sentence in the caption field has been written into the video a second time.
- Whether the preview was judged in the edit software's full frame, or on a phone with the interface over it.
- If the piece will also run in an ad placement, whether that placement's current preview was opened separately.
- If another ratio will come from the same shot, whether the burned-in type still survives in each ratio.
Sources
- Reels Requirements for Publishing (Meta sample repository)
Accessed October 20, 2026