Open Graph metadata builder: questions and guides

Each guide here answers one question with a practical example, then takes you to the tool to try it yourself. Guides: 13.

Questions

The image and title shown when you share a linkHow to control the title, description and image shown when your store link is shared on WhatsApp and social media, using Open Graph tags.
Which og:type should I use for a product page, and which for a blog article on my store?Use website for product and category pages and article for dated blog posts. What the builder writes for each type, and the extras it leaves to you.
When my store link is shared on X, should I pick the large image card or the summary card with a small image?The large image card suits a wide picture; the summary card shows a small, usually square thumbnail beside the text. How to choose, and when to drop Twitter tags.
The tool warns me that the image alt text is empty. What should I write there for a product photo?Describe what is in the picture for someone who cannot see it, not the page title or a keyword list. Product examples, and what the builder writes once you fill it.
I sell in both Saudi Arabia and the UAE. Should I choose ar_SA or ar_AE as the page locale (og:locale)?og:locale describes the language and region of the page text, not where you ship. One value per page, and the field is optional. How to choose, and what the tool writes.
I typed /products/oud as the page URL for og:url and the tool rejected it. Why must it be a full URL?Platforms read og:url on its own, so a bare path says nothing about your site. Why a relative page URL is an error while a relative image only gets a warning.
Do I need to state the image width and height in my share tags? And why does the tool warn me when I only fill in the width?Image width and height are optional hints that belong together. Why the builder warns when only one is filled, how it reads Arabic digits, and what it rejects.
Should my share title (og:title) be the same as my search engine title, or should I write a different one?A search title competes in a list and often carries the store name; a share title sits in a card that already shows the site. When to write them differently.
My site runs WordPress with an SEO plugin. Should I paste the Open Graph tags from the tool as well?SEO plugins often write share tags already, and a second set gives platforms two titles or images. Check the page source first; use the builder to prepare values.
Should I put my campaign link with utm_source in og:url, or keep it as the clean page URL?og:url is the page's canonical address, so keep it clean. Tracking tags belong on the link you share, not in the page tags. The builder writes what you paste, unchanged.
Why does the tool not treat og:description as required? Can I leave it empty?The protocol requires four properties and the description is not one of them. What the builder writes when it is empty, and why a short line still helps.
My share image link starts with http:// rather than https://. Could that be why the picture does not show when the link is shared?It can be: some platforms and apps load only secure images, and the builder accepts http without a warning. What to check yourself, since the tool never opens the image.
I write my Open Graph tags by hand in the page code. What common mistakes does the tool help avoid?Unescaped & and apostrophes, name instead of property, relative links and a forgotten required property. The usual hand-coding slips and how the builder handles each.