Paste your page HTML and see every Open Graph property, the four required checks and six platform card previews. The checker reads tags only and never loads your image file.
Your files are processed in your browser, on your own device. Nothing is uploaded to a server.
This open graph checker reads the Open Graph tags in HTML you paste and reports what each platform will work with. Paste a full page or just the head section. Nothing is fetched from a URL. You get every og property with its value, the four required checks first, then notes on truncation, image declarations and canonical matches.
One blind spot, stated before anything else: this checker reads the tags you paste. It does not load the og:image file, so the image real size, file weight and reachability stay unverified. Only the declared tags get checked. Server tools that fetch a page can measure the image itself. This one will not pretend to.
The required properties come first: og:title, og:type, og:image and og:url. A page missing any of the four is asking platforms to improvise, and some will improvise badly.
Then come the quiet problems. A title past about 60 characters and a description past about 160 are flagged as truncation risks. An og:image written as a relative path, or served over http instead of https, gets flagged too. Declared image dimensions are checked against 1200 x 630, with 600 x 315 as the floor. Last, og:url is compared with the canonical tag from the same paste, and a mismatch is named, because the two should agree on which URL owns the page.
Six cards are drawn from the values you pasted: Facebook, X, LinkedIn, Slack, Discord and WhatsApp. Treat them as sketches of shape and wording, labelled as approximations, not as screenshots of what each app shows tonight. Platforms crop, round and reflow cards on their own schedules.
Twitter tags found in the same paste appear in a second table under the og results. If that table is empty, do not panic. X falls back to the og values when twitter tags are missing. The card then runs on og:title, og:description and og:image, which is a workable default rather than an error.
It reads a paste, and a paste is a snapshot. If your live page has changed since you copied the source, the report describes the copy, not the page. Tags added by a plugin after you copied, or swapped by a caching layer, stay invisible here.
The image limit from the top of the page applies in full. Declared dimensions get checked. The file itself does not get loaded, measured or weighed, and a dead image URL with tidy tags passes. Server based tools that fetch the page can measure the image. This one trades that trick for working on any paste, including pages that are not live yet.
Before a launch, when the page exists only on staging. After a theme or plugin change, when the head is the first thing that silently changes. During a handover, when a client swears the tags were added and you want the answer in one paste. Any time the page is not public yet, a fetch based tool has nothing to fetch, and this one already has the answer.
Because it runs in your browser and never fetches. A paste also works on staging pages, drafts and pages behind a login, where a fetch based tool gets a login screen instead of your tags.
og:title, og:type, og:image and og:url. Everything else improves the result, but a card built without one of these four is partly guesswork on the platform side.
The checker verified the declared tags, not the file. Open the image URL on its own. If it returns an error, redirects oddly or sits behind a block, the platform crawler hits the same wall. Declared dimensions can also be wrong while looking tidy.
Pick the one true URL for the page and set both to it. A mismatch tells search engines one owner and social platforms another, and shares then credit a URL the page itself disowns.
No, and they are labelled as approximations on the page. They show the title, description and image each platform receives. Cropping and layout belong to the platforms and change without notice.
No. The paste is read in your browser and the report is built there. Close the tab and nothing remains, which is why the downloaded text report exists if you need a copy.
Same rules as this one: free, in your browser, with nothing uploaded.
See if a page repeats a phrase a healthy amount.
Title and description tags, written and copied clean.
A correct robots file without the guesswork.
A fast on-page check with a clear fix list.
Read the title, description and social tags of any page.
The tags that decide how a shared link looks on social media.
Card tags so a link posted on X shows its picture and title.
FAQ and Article structured data, built and ready to paste.