YouTube creators
Keep titles readable inside YouTube’s UI chrome and end-screen zones.
Free Thumbnail Safe-Zone Checker
Preview YouTube, Shorts, and Instagram safe zones on your thumbnail. Add text, export locally. Max 10 MB.
Runs in your browserNothing uploadedFree forever
Processed in your browser. Files never leave your device.
Private by design
Files stay on your device
Instant results
No account or wait queue
Always free
No watermarks or paywall
How to check thumbnail safe zones
Three steps to preview platform chrome and export a clean thumbnail.
01
Upload a thumbnail
Choose a PNG, JPEG, or WebP image up to 10 MB from your device.
02
Pick a platform preset
Overlay YouTube 16:9, Shorts/TikTok 9:16, or Instagram 1:1 safe-zone guides.
03
Add text and download
Optional title overlay with position controls. Download PNG or JPEG — guides optional.
Why creators use this free thumbnail checker
Keep titles and faces visible across YouTube and short-form platforms without uploading images.
See what UI will cover
Preview title, logo, and bottom chrome zones before you publish a thumbnail.
Runs entirely in your browser
Images never leave your device. No signup, watermark, or upload to Scribia servers.
Text overlay without design apps
Add a bold title, adjust size and position, then export a share-ready image.
Multi-platform presets
Switch between YouTube, Shorts/TikTok, and Instagram safe areas in one tool.
Who uses a thumbnail safe-zone tool
Shorts & Reels editors
Check vertical safe areas so captions and buttons do not hide your subject.
Social managers
Quick local mockups before handing assets to a designer or scheduling posts.
Ready for the full Scribia workspace?
Need AI thumbnails plus timeline editing? Scribia generates thumbnails and polishes screen recordings in the browser.
Frequently asked questions
Answers about privacy, limits, and how this free free thumbnail safe-zone checker works.
Do you upload or store my thumbnails?
No. Composition uses Canvas in your browser. The file never leaves your device.
Are the guides burned into the download?
By default, no. Enable “Include guides in download” only if you want a mockup with overlays.
What image formats work?
PNG, JPEG, and WebP up to 10 MB.
Is this thumbnail checker free?
Yes. Completely free with no signup, login, or watermark.
Looking for AI thumbnails and video polish?
This tool checks safe zones locally. Scribia also builds thumbnails, captions, and text-based edits from your videos.
Browser-only processing
No file uploads
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