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.
Built on reliable infrastructure with automatic failover and caching.
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.