Use case
Tech review thumbnails with clean products and a clear verdict
Tech viewers want to know one thing: is it worth it? Show the product beautifully and hint at the verdict.
What makes tech review thumbnails get clicked
- The product, large and well lit, often on a clean background.
- Comparisons — two phones, old vs new, cheap vs expensive.
- A verdict hint: “Worth it?”, “Don’t buy”, “Finally”.
- Your face reacting, for personality-driven channels.
Tech review thumbnail ideas to try
Versus
Two devices with a lightning bolt between them.
The flaw
A close-up of the problem, circled.
Unboxing glow
The box opening with light spilling out.
Price shock
The device next to a big price tag.
How to make one with ThumbSpark
Add your real product photos to a reference library bucket and mention them by name so the right product appears.
- 1
Set up your agent
Create an AI agent with your tech review style, colours and a few reference thumbnails.
- 2
Describe the video
Tell the agent the hook of the video — or import the transcript and let it find one.
- 3
Approve and generate
Review the proposal, approve it and generate. Ask for variations to compare options.
- 4
Tweak and export
Edit by asking until it’s right, then download and upload to YouTube.
Mistakes to avoid
- Product too small to recognise.
- Busy desk backgrounds.
- Fake specs or claims in the text.
Frequently asked questions
Can I put my own face in tech review thumbnails?
Yes. Add yourself once as a character and ask for the expression and pose you want in any project.
How much does a thumbnail cost?
Generations use credits based on their real AI cost, so a single thumbnail typically costs a few cents of credits. Try it with a one-time trial pack or pick a monthly plan — see pricing.
Make your next thumbnail in minutes
Tell the AI agent what your video is about — it proposes a thumbnail, you approve it, and you can tweak it by asking.