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Local preview · no media upload

Video Safe Zone Checker

This video safe zone checker previews your video, image, and sample captions beneath illustrative TikTok, Reels, and YouTube Shorts interface overlays.

A planning aid, not an official platform preview. It does not alter or export your video.

1. Choose a local video or image

The selected file stays in this browser. No media upload, account, or video export. Your browser must support the file's codec.

2. Stress-test the interface

These are illustrative editorial presets, not official pixel templates. Expanded descriptions and CTA controls deliberately reduce the preview area. No compliance or visibility guarantee.

3. Position a sample caption

50%
55%
60%
5.5%

The check measures only this sample text box. It does not detect faces, logos, or captions already burned into your file.

View the updated preview ↓

Placement notes
TikTok illustrative preview
Caption center: 50% from left, 55% from top
Text box width: 60% of frame
Font size: 5.5% of frame width (about 59px at 1080px wide)
Expanded description: off; extra CTA: off
Sample caption: Keep the important words visible.
Check in the destination app; these are editorial guides, not official dimensions.

TikTok · illustrative 9:16 preview

Choose a video or image
or try the caption controls.

Placement guide
Keep the important words visible.
Sample caption hidden or empty. Inspect existing captions by eye.

Interface controls vary. These overlays are not pixel-accurate copies, and the guide is not an official safe-area specification.

↑ Back to caption controls

How to use the video safe zone checker

  1. Choose a local recording or image, or start with the sample caption.
  2. Switch between platform overlays and test a longer description or extra CTA.
  3. Move the sample text, adjust its width and size, and check the complete box.
  4. Repeat in the actual destination app before publishing, especially for paid ads.

Why these overlays are illustrative

A fixed screenshot cannot represent every device, app release, description length, or ad format. TikTok documents that its safe-zone requirements vary with captions and added formats. Meta provides its own Reels safe-zone resources, while Google offers Shorts ad previews. Use those current placement-specific resources for ad delivery.

The green guide here is an editorial buffer. The automatic check only measures the sample caption box against that buffer. It does not detect or certify the text already in your video.

Keep checking placement in BlitzCut

BlitzCut already includes Safe Zone Preview in its export workflow. Use this browser preview to plan a talking-head clip, then review the real edit, caption placement, and export inside the app on iPhone, iPad, or Mac.

Cropping and reframing in BlitzCutDownload BlitzCut

Placement guides

Frequently asked questions

Is my video uploaded?

No. The selected file is previewed with a local browser URL. Remove it or reset the tool to clear the current preview.

Can I check captions already in my file?

You can inspect them visually under the overlays. Automatic bounding-box feedback applies only to the sample caption you type here.

Can I export a captioned video?

This tool only previews placement. Use a video editor to change existing captions and export the finished recording.