SEOMarkup Schema Inspector vs Sprout SEO (2026): which should you pick?
As of Oct 24, 2026, we pick Sprout SEO: it is second in our ranking of SEO browser extensions, and it grades higher too, 3.0 against 2.8.
Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
Sprout SEO grades higher on features. They get the same grade on value for money, the free plan, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
SEOMarkup Schema Inspector
Free, open-source Chrome extension that shows a page's JSON-LD
Free
Which one is for you
Pick SEOMarkup Schema Inspector if
- Fits if you debug structured data before a release and want to read it as a tree
- Works for seeing which schema types a competitor's page uses
Look elsewhere if
- Skip it if the page uses Microdata or RDFa, which are only flagged, not shown
- Too light for validation on its own, as that means opening Google's or Schema.org's tester
- Not for you if you use Firefox or Safari, as it runs in Chromium browsers only
- Watch out: the developer hasn't identified itself as a trader, so EU consumer rights don't apply
Pick Sprout SEO if
- Fits if you run quick on-page checks on client pages and want them in one panel
- Works for exporting a page's headings and copy for a content brief
Look elsewhere if
- Skip it if you want rankings or backlinks, as it links out to Ahrefs and Semrush for those
- Too light for whole-site audits, since it checks one page at a time
- Not for you if you browse in Safari, as only Chrome, Firefox and Edge are named
- Tight if you're mapping a big migration, as the Wayback exporter stops at about 100,000 URLs
- Watch out: the developer hasn't identified itself as a trader, so EU consumer rights don't apply
How we grade them
| 2.8GPASEOMarkup Schema InspectorGood | 3.0GPASprout SEOVery good | |
|---|---|---|
| Value for money | AFree for good and open source under the MIT license, with no paid tier, trial or card. | AFree, and the vendor's FAQ says it's completely free to use, with no paid version offered. |
| Free plan and trial | AFree outright: every feature in the extension, with no account needed. | AEvery check, export and SERP tool is free, with nothing held back. |
| Features | DOne narrow function: JSON-LD parsed into trees, @graph split up, full-text search, copy and download, and parse error banners. Microdata and RDFa are only detected, and validation means opening Google's or Schema.org's tester. | CIndexability, canonicals, headings, links with status, images, JSON-LD, hreflang, Core Web Vitals, a Trends and People Also Ask sidebar and a Wayback URL exporter. The gap the listing names: no ranking or backlink data of its own. |
| Ease of use | BNo rating on record, but no account and nothing to set up: open a page, click the icon and the schemas are listed. | BNo rating on record, but nothing to set up: install it, open a page and the checks are in the panel. |
| Platforms and integrations | CChrome and other Chromium browsers, so computers only, with no Firefox or Safari version. It hands off to Google's Rich Results Test and the Schema.org validator. | CChrome, Firefox and Edge, so computers only, with no Safari version. It links to Search Console, PageSpeed Insights, Trends, Ahrefs, Semrush and the Wayback Machine. |
| Best for | reading a page's JSON-LD as a tree | on-page checks plus a Google results sidebar |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: SEOMarkup Schema Inspector and Sprout SEO. How we grade
Price against what you get
SEOMarkup Schema Inspector has no paid plan and scores 2.0 out of 4 on features, ease of use and platforms. Sprout SEO has no paid plan and scores 2.3.
Sprout SEO scores higher for the same starting price. Of the other SEO browser extensions on the chart, none scores higher than SEOMarkup Schema Inspector for less, and none scores higher than Sprout SEO for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- SEOMarkup Schema Inspector is open source, according to its own site.
- Sprout SEO also covers site audit and page speed.
In commonFree planBrowser extensionSchema markup
At a glance
| SEOMarkup Schema Inspector | Sprout SEO | |
|---|---|---|
| Pricing | Free | Free |
| Starts at | Free | Free |
| Free plan | Completely free, with no paid tier, trial or card; the vendor's FAQ says it is free for good and open source under the MIT license. | The whole extension is free; the vendor's FAQ says it is completely free to use, and no paid version is offered. |
| Free trial | None listed | None listed |
| Browser extension | ||
| Made by | SEOMarkup | User Growth |
| Price read from | seomarkup.site | sproutseo.io |
| Checked | Oct 23, 2026 | Oct 23, 2026 |
Worth knowing
SEOMarkup Schema Inspector
- Microdata and RDFa are only detected and labelled, not displayed; full parsing covers JSON-LD.
- Validation happens by opening Google's Rich Results Test or validator.schema.org, not inside the extension.
- It is listed for Chrome, and the vendor says it works in other Chromium-based browsers; there is no Firefox or Safari version named.
- The Chrome Web Store notes the developer has not identified itself as a trader, so EU consumer rights do not apply.
Sprout SEO
- It checks one page at a time and has no ranking or backlink data of its own; it links out to tools such as Ahrefs and Semrush for that.
- It runs in Chrome, Firefox and Edge; the vendor names no Safari version.
- The Chrome Web Store notes the developer has not identified itself as a trader, so EU consumer rights do not apply.
- The Wayback exporter stops at about 100,000 URLs per domain.
Key features
SEOMarkup Schema Inspector
- JSON-LD tree view
- Parses every JSON-LD script block, splits @graph arrays into separate schemas and shows each as an expandable tree.
- Full-text search
- Search for a property name, value or URL across all schemas on the page, with next and previous match buttons.
- Copy, download, validate
- Copy a schema as raw JSON or a ready-to-paste script tag, download it as a .json file, or open the page in Google's Rich Results Test or validator.schema.org.
- Parse error banners
- When a JSON-LD block is malformed, a banner shows which block broke and why.
- Microdata and RDFa detection
- Flags when a page also uses Microdata or RDFa, though only JSON-LD is shown in full.
- Schema.org links
- Click any schema type to open its documentation on Schema.org.
Sprout SEO
- Indexability and canonicals
- Summarizes robots.txt status, meta robots and X-Robots-Tag headers, and flags a canonical that does not point back to the current URL.
- Headings, links and images
- Maps H1 to H6 with warnings, lists links with their HTTP status and anchor text, and groups images missing alt text or dimensions, all exportable to CSV.
- Schema and hreflang checks
- Detects JSON-LD types, exports each one and links to Google's Rich Results Test; the hreflang view checks each alternate's status and back-reference.
- Core Web Vitals snapshot
- Shows LCP, INP and CLS from Chrome user data with color cues, with a link to PageSpeed Insights for a fuller view.
- Google results sidebar
- Adds Google Trends data, keyword ideas, a People Also Ask extractor that exports to CSV and a simulator for searching from any location.
- Wayback URL exporter
- Pulls up to about 100,000 of a domain's URLs from archive.org within a date range, for mapping redirects after a site migration.
Plans
SEOMarkup Schema Inspector
Free$0
Every feature of the extension, free from the Chrome Web Store with no account.
Sprout SEO
Free$0
Every check, export and SERP tool in the extension, free to install for Chrome, Firefox or Edge.
Common questions
Which is cheaper, SEOMarkup Schema Inspector or Sprout SEO?
As of Oct 23, 2026, both SEOMarkup Schema Inspector and Sprout SEO are free to use.
Which has a free plan, SEOMarkup Schema Inspector or Sprout SEO?
As of Oct 23, 2026, both SEOMarkup Schema Inspector and Sprout SEO have a free plan.
More comparisons
- SEOMarkup Schema Inspector vs Google Rich Results Test
- SEOMarkup Schema Inspector vs Schema Markup Validator
- SEOMarkup Schema Inspector vs Detailed SEO Extension
- Sprout SEO vs Detailed SEO Extension
- Sprout SEO vs SEO Minion
- Sprout SEO vs SEOquake
- Sprout SEO vs META SEO inspector
- Sprout SEO vs SEO Pro Extension
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.