Microdeck.tools 100% In-Browser

Short-Form Safe Zone Checker

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Check whether your captions, buttons, and graphics are obstructed by TikTok, Instagram Reels, and YouTube Shorts UI layouts before publishing.

100% In-Browser No Server Storage Instant Results

Processed 100% locally. Video never leaves your computer.

2 lines
85%
Test Marker CenterX: 50%, Y: 50%

Waiting for Media

Upload a 9:16 video/image or click Sample to inspect placement against simulated platform overlays.

No media loaded

Upload a 9:16 video/image or click "Sample"

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Testing the brand new 2026 short-form safe zone layout guidelines! Make sure your crucial subtitles and CTAs never get cut off #creator #viral #reels

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How It Works Under the Hood

The tool uses HTML5 Canvas to render your uploaded image or video directly in your browser RAM. It overlays proportion-based reference templates for TikTok, Instagram Reels, and YouTube Shorts native UI chrome on top of your media.

Step-by-Step Instructions

1

Drop your 9:16 vertical video (MP4/WebM) or image into the preview stage.

2

Toggle between TikTok, Instagram Reels, or YouTube Shorts layout presets.

3

Adjust the caption length slider to simulate 1-line vs multi-line descriptions.

4

Ensure critical text, logos, and calls-to-action remain inside the safe green boundary.

Key Features & Performance

  • 100% Client-side: Your media is never uploaded to any server
  • Reference 9:16 UI overlay presets for major short-form video platforms
  • Dynamic caption height simulation and safe-margin boundary guides
  • Instant PNG preview export with safe-zone guides overlaid

Local Browser Processing & Privacy

Traditional web converters upload your documents, snippets, or media files to remote servers. Short-Form Safe Zone Checker runs inside your browser tab:

Processed in This Tab

Your input text and files are processed locally without uploading payloads to a processing server.

No Tool Payload Logging

Microdeck does not log or store the files or inputs you paste into tool workspaces (normal static hosting/CDN requests still load page assets).

Tab Memory Lifecycle

Working outputs stay in your browser tab and are released when you reset the tool or close the tab.

Frequently Asked Questions

What are the exact safe zone dimensions for TikTok in 2026?

For a 1080x1920 video, the vertical safe zone spans from 150px at the top to 320px from the bottom. The right margin requires 120px clearance for interaction icons.

Does this tool upload my video to a remote server?

No. Microdeck runs entirely inside your browser using HTML5 File and Canvas APIs. No bytes leave your device.

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