Your thumbnail isn't bad. It's just INVISIBLE.
Most thumbnails look fine alone. They fail in the feed. See yours in real YouTube context, compare versions, and get clear fixes before you publish.
Your thumbnail vs real competitors
Does it stand out or blend in?
Compare versions
Stop guessing between thumbnails
Upload multiple versions and instantly see which one wins, with clear reasons why.
Reads fine alone, but sits in the same color band as the rest of the row.
Higher predicted scroll-stop for this search. Clearer focal hierarchy at a glance.
Put two or more drafts side by side, pick the one that wins the row, then upload with confidence.
In seconds, you'll know what to fix
No guessing. Just clear next steps.
Scroll-Stop Score
GoodCreators with high scores get more clicks
- Increase text size for mobile: Bump weight or size so the headline survives small tiles
- Boost contrast to stand out: Separate the title from the background so you don’t blend in
- Simplify layout for faster recognition: One clear focal story beats competing elements in the frame
This isn't just a preview tool
Real YouTube context, clear decisions, and fix-first guidance so you choose the right thumbnail before you publish.
Know if people will stop scrolling
Scroll-Stop Score
A clear read on whether your thumbnail earns a second look in a busy feed before you publish.
See why others stand out over you
Competitor context
Your thumbnail side-by-side with real results for your keyword, so you can choose fixes that actually matter.
What viewers notice in the first second
First-impression read
Surface what reads instantly versus what gets lost at small sizes. Then adjust before it costs you clicks.
Not just a score. A clear next step.
ThumbRival tells you what to change, why it matters, and what will have the biggest impact so you can fix the right thing first before your video goes live.
Recommended next steps
- 1
Increase text size for mobile
Take the main line from ~56px to ~68px equivalent so it survives the small grid tile.
- 2
Brighten subject separation
Lift the face or product edge one stop and darken the immediate background behind it.
- 3
Reduce competing elements in background
Crop out the logo stack on the right or blur that shelf so one hero object wins the frame.
In the product: subscores, before/after hints, and ranked actions tie every fix back to your real search row.
How it works
Three quick steps. Less than a minute.
Upload your thumbnail
Drop your image (JPG, PNG, or WebP). We place it in a real YouTube-style feed next to live competition.
Enter a search term
Use the keyword your viewers would type. That’s the context we compare you against.
Instantly see if your thumbnail stands out
Decide what to change while it is still a file on your desktop, not after the upload.
Most creators realize at this step that their thumbnail blends in while they can still change it.
Frequently asked questions
Is my thumbnail uploaded to YouTube?
No. Your thumbnail is used for scoring and preview only. It is not uploaded to YouTube. Competitor thumbnails come from real YouTube search results for your keyword.
Are the competitor thumbnails real?
Yes. When you enter a search term, we pull real thumbnails from YouTube so the comparison matches what viewers actually see in that feed.
What image formats are supported?
JPG, PNG, and WebP up to 3 MB (we compress automatically). YouTube's recommended thumbnail size is 1280×720 px (16:9 aspect ratio).
Can I cancel my subscription at any time?
Yes. You can cancel a paid plan from your account; you will not be charged again after the current period ends.
How does the free test work?
You can try ThumbRival without a card: upload a thumbnail, enter a search term, and see how it stacks up with a Scroll-Stop read and fix-oriented feedback. Logged-in users get additional free tests within a rolling window; paid plans unlock deeper competitor breakdowns, compare workflows, and higher limits.
Do you store my images?
We may store thumbnails you test so you can see history and recall past results in your account. You can delete history from the app where supported. We do not use your images to train public models.
How should I interpret the Scroll-Stop Score?
It is an AI estimate of how likely your thumbnail stops someone scrolling (0–100), with plain-English labels. Use it to decide what to change before you publish — it is guidance, not a guarantee of views or clicks.