Thumbnail Reality Check

About

Test your YouTube thumbnail BEFORE you upload.

● Free features
· Real-size preview (search results, home, tiny phone size)
· Side-by-side with competitors (just paste a channel URL)
· Text compare — see how differentiated your wording is (%)
· Safe-zone check — keep text clear of the duration badge, with real-pixel sizing
· Auto score — brightness, contrast, color, clutter, tiny-size readability (genre presets incl. Music/BGM)

● Pro (one-time purchase)
· Competitor match rate % — know when you'd blend in before you publish
· Auto text reading (OCR, English & Japanese) — fully on-device
· Similarity % + metric-by-metric hints on how to close the gap with rivals

🔒 Privacy: your images and text recognition are processed entirely on your device. Network is used only to fetch thumbnails from YouTube URLs you paste, and to verify purchases (via Stripe — the developer never sees your card details).