Bold uppercase title over a photo, a highlighted second line, channel and duration — YouTube style.
This is a real render from the API with the example values below, at 1200×630.
The look people already click on: a dark gradient over the frame, a huge title with a second line on a coloured band, the channel at the bottom and the duration in the corner. Use it for video pages, course trailers and social clips.
Every field is optional. Long text shrinks to fit instead of overflowing; an image field takes a public URL that we fetch on our side.
| Field | Type | Description | Example |
|---|---|---|---|
title |
text | First line of the title. default: Video title | I hiked the Alps |
highlight |
text | Second line on a coloured band. | in 3 days |
badge |
text | Label in the top corner, e.g. NEW. | NEW |
channel |
text | Channel or creator name. | Trail Notes |
duration |
text | Running time, e.g. 48 min. | 14:27 |
image |
image URL | Background photo. | https://example.com/images/mountains.jpg |
avatar |
image URL | Channel avatar. | https://example.com/images/avatar-man2.jpg |
accent |
colour | Brand colour as hex, e.g. #6366f1. Drives buttons, highlights and the background glow. default: #facc15 | #facc15 |
theme |
dark | light | Colour scheme: dark or light. | — |
Use the slug as template. The response holds the URL of the finished PNG; ?wait=true keeps the connection open until it is ready.
curl -X POST "https://imageapi.benchkithq.com/v1/images?wait=true" \
-H "Authorization: Bearer sk_live_YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{
"template": "video-thumbnail",
"modifications": {
"title": "I hiked the Alps",
"highlight": "in 3 days",
"badge": "NEW",
"channel": "Trail Notes",
"duration": "14:27",
"image": "https://example.com/images/mountains.jpg",
"avatar": "https://example.com/images/avatar-man2.jpg"
}
}'
For static sites, Webflow, Shopify and no-code tools: put the fields in the query string and sign it with your signing secret. The first request renders the image, every later one is a redirect to the cached file. How to compute the signature.
<meta property="og:image" content="https://imageapi.benchkithq.com/i/acc_YOUR_ACCOUNT_ID/video-thumbnail.png?badge=NEW&channel=Trail%20Notes&duration=14%3A27&highlight=in%203%20days&title=I%20hiked%20the%20Alps&s=YOUR_SIGNATURE">
accent and theme change per request. For anything more, copy the template into your account: you get an ordinary HTML template with the same fields that you can edit in the dashboard or through the API. If the slug is free on your account, the copy takes it — your integrations switch to your version without changing a line.
curl -X POST "https://imageapi.benchkithq.com/v1/templates/library/video-thumbnail/copy" \
-H "Authorization: Bearer sk_live_YOUR_KEY"
Blog post
Job posting
Event
Podcast episode
Changelog / release
Documentation page
Real estate listing
Product card
Product on sale
Course lesson
Recipe
Newsletter issue
Quote card
Case study / testimonial
GitHub repository
Feature announcement
Profile / author card
Comparison (A vs B)
Stat highlight