Open Graph Preview

How OG Preview works

See how a link renders as a social card, with title and description limit checks and a local image preview. Everything happens inside this page: the tool reads your input, runs the calculation or conversion locally, and hands the result back to you. Nothing is transmitted, because there is no backend to transmit it to.

That design choice is deliberate. Most free tool sites upload your files to a server, process them there, and quietly keep a copy. Toolcin cannot do that — the site is a set of static files. If your connection dropped the moment the page finished loading, every tool would still work.

How a shared link looks

The preview shows the card a chat app or social platform builds from your Open Graph tags: image, title, description and domain. Most platforms read og:title, og:description, og:image and og:url; Twitter falls back to them when its own tags are absent.

The image is the element that decides whether anyone clicks, and it is the one most often missing or the wrong size.

Sizes and ratios

1200 × 630 (1.91:1) is the safe default. Square images get cropped differently on each platform, and very tall images are cropped to a strip.

Keep critical content away from the edges — a platform may crop 10% on any side when it needs a different ratio.

Why a preview sometimes shows nothing

Missing tags, an image that requires a login, or a platform cache that still holds an old version. Most platforms offer a debugger that re-scrapes; without that, a changed image can take days to appear.

Good to know

• Works offline once loaded, including on flights and in locked-down networks.
• No file size limit beyond your device's own memory.
• Free to use, with no account and no usage counter.
• Results are produced locally, so they are not logged or shared with anyone.

Questions