Open graph meta tag generator

Every field value is attribute-escaped with strict double quoting, so quotes, angle brackets, and ampersands survive the paste into your head section with no exceptions. og:url and og:image are validated as absolute http(s) URLs instead of only being escaped, because crawlers fetch those two rather than trusting the sharing platform. Length problems warn and never silently truncate. Nothing is uploaded or fetched here, and the preview does not load the image.