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embisto vs OpenGraph.io
OpenGraph.io is a hosted API that reads Open Graph data from URLs and infers it when a page has none, with screenshots, scraping and an optional full browser render, billed in credits. embisto is a link preview service you run yourself.
| Feature | embisto | OpenGraph.io |
|---|---|---|
| Self-hosted | Yes | No, a hosted service |
| License | MIT, source on GitHub | Proprietary |
| Language and runtime | Go; one static binary | Hosted API |
| Library mode | Yes, a Go library | No |
| Iframely-compatible API | /iframely and /oembed |
No |
| JavaScript-rendered pages | Not yet; a headless browser is planned | Yes, with a full render that costs more credits |
| Screenshots | No | Yes |
| Price | Free software; the hosted API is free, 60 requests a minute per IP address, best effort | Free tier with a small monthly allowance, paid plans; see opengraph.io/pricing |
Where OpenGraph.io is stronger
- Rendering and screenshots for pages that need a browser.
- Nothing to run, with support behind a paid plan.
Where embisto fits
- More than Open Graph. oEmbed with embed HTML, JSON-LD, Twitter Cards and HTML merged into one card, plus Iframely's formats.
- No credits. Run as many previews as your machine handles; the in-memory cache and request coalescing keep repeats cheap.
- Your network, your rules. SSRF guards on every connection; URLs never leave your infrastructure.