Question 1

How do I create my first thumbnail?

Accepted Answer

Type a description of your video (or paste its title) into the box on the homepage or in Create, choose a format and press Generate thumbnail. If you do not have an account yet, you will be asked to create one first and your prompt is kept for you.

Question 2

What should I write in the prompt?

Accepted Answer

Describe one subject, the emotion or action, the setting, the lighting, the colours and up to five words of text in quotes. Our prompt guide on the blog has examples for every niche.

Question 3

Can I start from a template?

Accepted Answer

Yes. Open Templates, pick the niche closest to your channel and press Use this template. The studio opens with a ready-made prompt you can adapt.

Question 4

What is a credit?

Accepted Answer

A credit is one unit of AI work. One HD thumbnail or one edit costs one credit. Ultra quality and 4K cost three credits. Exporting to other sizes is free.

Question 5

Do failed generations cost credits?

Accepted Answer

No. If a generation fails, the credit is returned to your balance automatically.

Question 6

When do my credits refresh?

Accepted Answer

Monthly credits refresh at the start of each billing month. On yearly plans you receive your monthly credits every month.

Question 7

How does the free trial work?

Accepted Answer

The trial lasts 3 days and includes 10 credits without a watermark. A card is required. Cancel before the trial ends and you will not be charged.

Question 8

How do I skip the trial?

Accepted Answer

Choose “Skip trial and pay now” under any plan. Your plan starts immediately with its full monthly credits.

Question 9

How do I cancel?

Accepted Answer

Open Billing in your dashboard and choose Manage subscription. Your plan stays active until the end of the period you have paid for.

Question 10

What size is a YouTube thumbnail?

Accepted Answer

1280×720 pixels in 16:9, under 2 MB, as JPG or PNG. ThumbMagic's YouTube export meets these requirements automatically.

Question 11

Why is there a watermark on my thumbnail?

Accepted Answer

Thumbnails made on the free plan carry a ThumbMagic watermark. Start a trial or a paid plan to download without a watermark.

Question 12

Why am I not logged out?

Accepted Answer

ThumbMagic keeps you signed in on your device so you can come back to your projects at any time. Use Sign out in the account menu on shared computers.

Question 13

Who can see my uploads?

Accepted Answer

Only you. Uploads and thumbnails are private to your account and are never used to train AI models.

Question 14

How do I delete my account?

Accepted Answer

Open Settings in your dashboard and choose Delete account, or contact us and we will delete your account and data.

How can we help?

Getting started

Credits

Trials and billing

Downloads and formats

Account and privacy

Still stuck?