Generate beautiful Open Graph images on the fly — with AI-assisted cover ideas. Perfect for blogs, social media, and any content that needs dynamic preview images.
Studio — credits, static PNGs · Dynamic API — monthly plan, per-link images
This cover is a URL
A technical look at HMAC-SHA256 signing, headless Chrome rendering, one-year caching, and success-only credit deduction.
LavX News · Niklas Berg · August 18, 2026 · 1 min read
Simple API, beautiful templates, AI-assisted ideation, and instant generation.
Generate images in milliseconds with our optimized rendering engine.
Choose from professionally designed templates or create your own.
One-off Studio credits for static downloads, or a monthly Dynamic API plan for per-link images.
Simple REST API with comprehensive documentation and examples.
Customize colors, fonts, layouts, and more to match your brand.
Stable signed URLs with a one-year cache lifetime for repeat requests.
Describe your brand and our model suggests ready-to-apply templates, headlines and palettes — right in the dashboard.
Available to logged-in users in the Playground.
Every cover on this page was generated by our own engine — the same renderer behind your API. Pick a template and see it live.
🧊 3D Depth
Depth Prism · tilt3d
🔮 Chrome Orb
Chrome Orb · chromeorb
🌐 Geodesic Globe
Geodesic Globe · globe3d
✨ Iridescent
Iridescent · iridescent
🌅 Image Hero
Image Hero · imagehero
🖼️ Photo Card
Photo Card · photocard
🗼 Iso Platform
Iso Platform · platform3d
🌆 Neon Bloom
Neon Bloom · neonbloom
🎮 Game Storefront
Game Storefront · gamestore
Get started in minutes with our simple API.
Buy Studio credits for static downloads, or choose an API plan for dynamic images.
Pick a template in the Playground, set your title and brand, and preview instantly.
Download the PNG to self-host, or drop the signed API URL into your og:image tag.
Buy Studio credits for downloadable PNGs, or subscribe to Dynamic API for live, per-link images.
Studio
One-time credits for fixed covers you download and self-host.
Dynamic API
Monthly plans for personalized images served from signed API URLs.
One-time credits for fixed covers you download and self-host.
$5
5 images · ~$1.00 / image
$19
30 images · ~$0.63 / image
$49
100 images · ~$0.49 / image
Studio credits are one-time purchases and never expire. Dynamic API subscriptions renew monthly and can be canceled anytime; access continues through the current billing period.
Try it now! Customize your OG image and see the results in real-time. No signup required.
Get the integration cheat-sheet — optional. No spam, no account.
💡 Try it now! Customize your OG image and see the results in real-time. No signup required.
This is a sample subtitle for testing
Answers about FastOG's dynamic Open Graph image API, pricing, and caching.
An Open Graph image API generates the 1200×630 social preview image for a page on demand from a URL. FastOG renders a unique, branded card for every blog post, product page, or SaaS page automatically — no design work, no uploads. It works with any framework through one-file signers for Node, React, SvelteKit, Vue, Astro, PHP, Python, and more.
Yes. There's a free OG Image Tester that needs no login. Want a static one-off cover? Buy Studio credits and download it. Need dynamic per-link images? That's a Dynamic API plan. Identical URLs are edge-cached so re-shares cost nothing.
Studio: one credit per downloaded PNG (buy a pack, credits never expire). Dynamic API: a monthly plan with an included render quota — and identical URLs are edge-cached, so re-shares cost nothing.
No. FastOG signs the content, not the clock — a URL stays valid until you rotate your API key's HMAC secret. Content-signing also keeps caching deterministic: identical parameters always produce the identical, cached URL.
Yes — FastOG is framework-agnostic. It works with plain HTML, WordPress, Astro, Nuxt, SvelteKit, PHP, Python, Ruby, and any server-side language. Just drop in your language's signer file from the SDK page.
56 templates, 10 language signers, a free no-login tester — and dynamic per-link images.