OGraph Previewer vs Plerdy SEO Analyzer (2026): which should you pick?

Pick OGraph Previewer if

• Fits if you check og tags on a page before it goes live
• Works for marketers checking a link's title, description and image before they share it

Look elsewhere if

• Too light for social previews beyond Open Graph, as X (Twitter) cards and schema aren't covered
• Watch out: the preview is built from the tags, not the card a given network will actually render
• Skip it if you're not on Chrome, and note the last update was version 2.0.0 in August 2023
• Watch out: it's a one-developer project, and the developer hasn't identified itself as a trader, so EU consumer rights don't apply

Pick Plerdy SEO Analyzer if

• Fits if you want a page's tags, readability and keyword use checked before you publish it
• Works for developers looking for slow scripts, styles and images on a single page

Look elsewhere if

• Too light for whole-site audits, as daily site checks and Search Console alerts are Plerdy's separate SEO Checker
• Skip it if you want search volumes, rankings or backlinks, as none are on record
• Not for you if you browse in Firefox, Safari or Edge, as it's listed for Chrome only
• Watch out: the developer hasn't identified itself as a trader, so EU consumer rights don't apply

OGraph Previewer

• It covers Open Graph tags only; the listing does not mention X (Twitter) cards, schema or other metadata.
• The preview is an approximation built from the tags, not the card a given network will actually render.
• It is listed for Chrome only and was last updated on August 31, 2023 (version 2.0.0).
• The developer has not identified itself as a trader, so EU consumer rights do not apply, as the store listing notes.

Plerdy SEO Analyzer

• It audits the page in front of you; daily site audits and Search Console alerts are part of Plerdy's separate SEO Checker.
• It is listed for Chrome only.
• The Chrome Web Store notes the developer has not identified itself as a trader, so EU consumer rights do not apply.

OGraph Previewer

Share preview

Shows a preview built from the page's og tags, giving an idea of how the link would appear when shared on social platforms.

Copy og tag data

Copies the Open Graph data found on the page, for debugging or pasting into a ticket.

Development and live pages

Reads the tab you have open, so it can check pages on a development server before release as well as pages already in production.

Light and private

The extension is about 17 KB, and its developer discloses that it does not collect or use your data.

Plerdy SEO Analyzer

On-page audit and SEO score

Checks title, description, H1, robots, canonical and hreflang tags, then rates the page from 0 to 100 and lists what to fix.

AI suggestions

Gives AI-generated tips with examples for meta tags, headings, keyword placement, readability and internal links, plus E-E-A-T and AEO checks.

Text and keyword analysis

Counts words and characters, keyword and stop-word share, uniqueness, sentence length and Flesch reading ease; click a keyword to highlight it on the page.

Links, images and headings

Reports dofollow, nofollow and duplicate links with their anchors, flags images with no alt text, and maps the H1 to H6 structure.

Open Graph and schema markup

Shows Open Graph and X (Twitter) card tags and the structured data a page carries, to check social previews and rich results.

Performance and technologies

Lists load time, DNS, TCP, TTFB and DOM timings, flags JS, CSS and image files slower than 300 ms, and detects analytics tools, pixels, CMS and frameworks.

OGraph Previewer

• Free$0

  Open Graph preview and tag copying, free from the Chrome Web Store.

Plerdy SEO Analyzer

• Free$0

  Every check in the extension, including the SEO score and AI tips.