Is my image uploaded to your server?

No. All image processing and previews happen locally in your browser. We never see or store your files.

What is a Contrast Score?

It measures the difference in luminance between your text and your background. A 'Pass' score ensures your text stops the scroll.

Can I download the final preview?

Yes, you can download a snapshot of your test to share with your team or keep for reference.

Why does my text look blurry on mobile?

Small font sizes or fonts with low contrast tend to 'bleed' into the background on mobile screens. We recommend bold fonts and high-contrast outlines.

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thumbnail previewer

Thumbnail Text Previewer

Stop wasting clicks. See if your thumbnail text is readable on mobile devices.

Thumbnail Editor

Background Image

Overlay Text

Font Size

Y-Position

Text Color

Outline Color

Live Simulation

Upload background for the best test

VIRAL VIDEO TITLE

Contrast Score

Excellent (8.4:1)

Readability

Clear @ 144p

Engagement Tip

Try "Shock" emojis

Indian Creator Cheat Sheet: 2026

The Rule of 3

Don't use more than 3 words on your thumbnail. Let the background tell the story.

Contrast is Key

Neon Yellow, Bright Red, and Pure White text with Black Outlines perform 40% better in India.

Faces Matter

Ensure the person's expression is clearly visible even on a 5-inch smartphone screen.

Master the Thumbnail Text Previewer

The ultimate tool for YouTube and Instagram creators. Upload your thumbnail background, add your text, and instantly see how it looks on a simulated mobile phone or desktop screen. We even calculate a Contrast Score to ensure your font stands out against any background.

Perfect for...

Serious YouTubers

Verify if your high-effort thumbnail is readable on 5-inch screens before uploading.

Graphic Designers

Show clients how their thumbnail design will look in a real-world YouTube search environment.

Shorts Creators

Test custom covers for vertical videos in the YouTube app mockup.

Your Privacy is our Jugaad.

Unlike other tools, KuchhBhi processes everything in your browser or through encrypted real-time AI pipes. We don't store your personal texts, documents, or photos. Direct and secure.

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