How draw.io Looks on Facebook
This page shows how draw.io appears when shared on Facebook. The current preview headline reads "Flowchart Maker & Online Diagram Software". Neither a description nor an image is configured, which produces a sparse preview. Overall, draw.io's setup scores 39/100 against Facebook best practices.
Facebook preview
Large card (image ≥ 600px wide)
app.diagrams.net
Flowchart Maker & Online Diagram Software
Compact card (image < 600px wide)
app.diagrams.net
Flowchart Maker & Online Diagram Software
Analysis
draw.io's social setup currently has 1 error and 4 warnings that affect how it renders on Facebook. The most impactful fixes are listed below - they range from missing required tags to image dimensions that will be cropped or rejected by specific platforms.
In particular: no social share image found; no og:title - falling back to <title> tag; no description found. Each of these has a one-line fix in the recommendations panel above.
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