A share image for every page you publish.
Design the card once. Sign one URL per page with its title and author, put it in your og:image tag, and Bannx renders it on the first open. No image pipeline to run.
25 free renders every month · Signing is free
Before and after
By hand
- Make each share image by hand, or skip it.
- Run a headless browser to screenshot HTML, and keep it alive.
- Posts get shared with a generic image.
With Bannx
- One signed URL per page, rendered on its first open.
- Every open after that comes from cache.
- Change the design, republish, and every URL picks it up.
How it works
Design the card
Start from a gallery template or your own. Mark the title, author and image as fields.
Sign the URLs
Sign one URL per page, up to 500 in one request, or sign them in your own build with your space's secret. Signing is free.
Put it in the tag
Use the URL as your og:image. A page shared a thousand times renders once.
Start from a real template
Free to open and edit, no account needed.
Jobs publishing teams run
- OG images for blogsA share card for every post, from its title.
- Signing in your buildSign URLs in your own code, with no API call per page.
- Act when a render finishesA signed webhook tells your system when an API render completes.
- Cards made by agentsYour AI agent renders and signs the same images over MCP.
What it runs on
What it costs
25 free renders every month. Starter is $15 a month for 1,000 credits. An image costs 1 credit, a video clip 5 credits.
Each distinct URL renders once, for 1 credit, on its first open. Opens after that come from cache and cost nothing. Signing is free.
See all plansQuestions
Something else on your mind? Email [email protected].
No. The link carries a signature instead. Anyone can open it, but changing a value in it breaks the signature, so nobody can make your template say something else.
1 credit the first time it is opened, then nothing: the image is cached for a year. Republishing the template refreshes it, which renders it once more.
PNG or WebP, at up to 2× scale. Add size=og and the design reflows to 1200 × 630 without changing the template.
Yes. Copy your space's signing secret from the template's URL tab and sign each URL in your own code with HMAC-SHA256.
You can make a share image now: open a template, change the text and download a PNG, free and with no watermark. Signed URLs need an account, and signing up is free.
One template, a share image for every page.
Try a template free, or read how signed URLs work.