Upload your thumbnail, enter a keyword, and see exactly how it looks in real YouTube search results — side by side with your top competitors. Fix it before it tanks your CTR.
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340+ creators already on the waitlist
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Most creators spend hours editing a video, then pick a thumbnail in 5 minutes — completely blind.
You design your thumbnail in isolation. But YouTube is a search page — how your thumbnail looks next to competitors is what determines clicks.
YouTube's algorithm punishes low click-through rates. A bad thumbnail isn't just embarrassing — it's actively suppressing your video from being recommended.
YouTube's native A/B testing is clunky and requires you to already be live. By then, the algorithm has judged your video. You need to test before you post.
ThumbSpy shows you the truth before your video goes live.
Drag and drop up to 3 thumbnail variants. We support JPG, PNG, and WebP.
Tell us what search term you're targeting. We'll pull the real top-ranking videos for that keyword.
Your thumbnail is dropped into a pixel-perfect YouTube search results preview alongside real competitors.
Built for creators who treat YouTube like a business.
See your thumbnail placed in actual YouTube search results using real competitor videos.
Upload 2–3 variants and compare them in the same search grid. Know which design wins.
Generate a link and send it to your Discord or community. Get votes and feedback instantly.
Half your viewers are on mobile. See exactly how your thumbnail looks on a phone screen.
Our AI analyses contrast, face placement, and text readability to give a predicted CTR score.
Save all your tests in one place. Identify patterns that work for your niche.
"I tested 3 thumbnails and immediately knew which one to use. My CTR went from 3.8% to 7.2%. This should be the first tool every creator installs."
James O.
Gaming Creator · 42K subscribers
"I've been on YouTube for 3 years and I'm embarrassed I didn't have this before. Seeing my thumbnail next to MrBeast's told me everything I was doing wrong."
Amara K.
Beauty Creator · 18K subscribers
"The shareable link feature is genius. I sent it to my Discord and got 40 votes in 10 minutes. I'd been wasting so much time guessing what looked good."
Daniel F.
Finance Creator · 91K subscribers
Start free. Upgrade only when you're growing.
Starter
Free forever
Pro
per month · cancel anytime
Agency
per month · up to 10 channels
It uses real data from the YouTube API to pull the actual top-ranking videos for your target keyword, then renders them in a pixel-accurate replica of the YouTube search results page. Your thumbnail is dropped into that real grid.
Nope! You can use ThumbSpy to test thumbnails for any keyword, even before your channel is set up. It's also great for freelance thumbnail designers who work across multiple client channels.
Our AI model analyses several visual signals known to impact click-through rates: contrast, face presence and emotion, text readability at small sizes, colour differentiation from top competitors, and overall visual hierarchy. It returns a score and specific tips.
Absolutely. No contracts, no lock-in. Cancel from your account dashboard in one click, and you'll retain access until the end of your billing period.
We accept all major credit and debit cards via Stripe. For international users, we also support PayPal. All prices are in USD.
Yes — all Pro features are free for 14 days. No credit card required. You'll only be charged if you decide to keep it after the trial ends.
Join 340+ creators already on the waitlist. Free during beta. No credit card needed.
Free during beta · No spam · Unsubscribe anytime