Detailed SEO Extension vs SEO Spider Tools (2026): which should you pick?
As of Oct 23, 2026, Detailed SEO Extension and SEO Spider Tools share a 3.0 GPA, both are free, so the choice depends on which features you need.
Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
They get the same grade on all five counts.
Price, platforms and features side by side. The table says where each price was read and when.
Detailed SEO Extension
Free Chrome and Firefox extension for one-click on-page SEO checks
Free
SEO Spider Tools
SpiderNow's free extension for technical and on-page SEO checks
Free
Which one is for you
Pick Detailed SEO Extension if
- Fits if you check titles, headings and schema on single pages and don't want to read the source
- Works for checking hreflang on a multi-language site, alternate by alternate
Look elsewhere if
- Skip it if you want search volumes, rankings or backlinks, as it has none of its own
- Too light for whole-site audits, since it inspects one page at a time
- Not for you if you browse in Safari or Edge, as only Chrome and Firefox are listed
- Watch out: the changelog's last entry is December 2024, though both stores show an update in 2026, and the interface is English only
Pick SEO Spider Tools if
- Fits if you check a page's redirects, directives and broken links while browsing
- Works for site owners who want an .htaccess file for redirects and caching without writing it
Look elsewhere if
- Too light for whole-site audits, which SpiderNow sells on its website from $6.99 a month
- Watch out: the listing doesn't say whether it needs a SpiderNow account or counts against that account's scans
- Skip it if you're on Firefox or Safari, as only Chrome and Edge versions are listed
- Watch out: the Chrome version was last updated in October 2023, and the developer isn't a declared trader, so EU consumer rights don't apply
How we grade them
| 3.0GPADetailed SEO ExtensionVery good | 3.0GPASEO Spider ToolsVery good | |
|---|---|---|
| Value for money | AFree outright on Chrome and Firefox, and its page says there's no paid version and no upsells. Tags, headings, links, schema and hreflang all come at no cost. | AFree from the Chrome Web Store, which lists no in-app purchases. SpiderNow's site scans are sold separately, from $6.99 a month. |
| Free plan and trial | AEvery feature is free, with no account, no plan to upgrade to and nothing held back. | AFree outright as far as the store shows: every check, the content editor and the .htaccess builder. The listing can't say whether it needs a SpiderNow account. |
| Features | CTitle, meta description, meta robots and X-Robots-Tag, headings, link and image exports, schema, hreflang with return-link checks and People Also Ask extraction. The gap the listing names: no keyword volumes, rankings or backlink data of its own. | CRobots and meta directives, links with follow status, broken links and redirect chains, status codes, Core Web Vitals, titles, headings, canonical, hreflang, schema errors and thin pages. The gap the listing names: one page at a time, with full-site scans sold separately. |
| Ease of use | BNo rating on record, but there's nothing to set up: install it, open a page, click the icon and the panel is there. | BNo rating on record, and nothing to set up is on record: install it and open the panel on a page. |
| Platforms and integrations | CChrome and Firefox extensions, so computers only, with no Safari or Edge version named. The Ahrefs, Semrush, Moz and Majestic links open those sites; no data is pulled in from them. | CChrome and Edge, so computers only. It pulls Core Web Vitals from PageSpeed Insights, and nothing else is listed. |
| Best for | one-click page checks in Chrome or Firefox | technical checks on one page, plus .htaccess files |
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: Detailed SEO Extension and SEO Spider Tools. How we grade
Price against what you get
Detailed SEO Extension has no paid plan and scores 2.3 out of 4 on features, ease of use and platforms. SEO Spider Tools has no paid plan and scores 2.3.
On this chart the two sit in the same place: the same score for the same starting price. Of the other SEO browser extensions on the chart, none scores higher than Detailed SEO Extension for less, and none scores higher than SEO Spider Tools 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
- SEO Spider Tools also covers internal linking and page speed.
In commonFree planBrowser extensionSite auditSchema markup
At a glance
| Detailed SEO Extension | SEO Spider Tools | |
|---|---|---|
| Pricing | Free | Free |
| Starts at | Free | Free |
| Free plan | The whole extension is free on Chrome and Firefox; its page says there are no upsells and no paid version. | The extension is free to install; the store listing lists no in-app purchases. SpiderNow's own account plans are sold separately. |
| Free trial | None listed | None listed |
| Browser extension | ||
| Made by | Detailed | SpiderNow (OrganicRankings.com, LLC) |
| Price read from | detailed.com | chromewebstore.google.com |
| Checked | Oct 23, 2026 | Oct 23, 2026 |
Worth knowing
Detailed SEO Extension
- It inspects one page at a time and has no keyword volumes, rankings or backlink data of its own.
- It is listed for Chrome and Firefox only; the vendor names no Safari or Edge version.
- The changelog's latest entry is December 2024, though both stores show version 2.2.7 updated in 2026.
- The interface is in English only, according to the Chrome Web Store listing.
SEO Spider Tools
- Full-site scans and reports are sold on SpiderNow's website: a free account covers a few single-page scans a month, and paid plans start at $6.99 a month.
- The listing does not say whether the extension needs a SpiderNow account or counts against its scan limits.
- Chrome and Edge versions are listed; the Chrome listing was last updated on October 11, 2023.
- The developer has not identified itself as a trader, so EU consumer rights do not apply, as the store listing notes.
Key features
Detailed SEO Extension
- Page overview
- Shows the title tag, meta description, meta robots and X-Robots-Tag header for the page you are on, with a quick link to its sitemap.xml.
- Headings view
- Lists every heading tag indented by level, with a button that copies them all to the clipboard.
- Links and images export
- Exports all links on a page and shows whether each is nofollow or sponsored; image URLs can be downloaded as a CSV file.
- Schema and hreflang
- Shows a page's structured data markup and all its hreflang alternates, with status codes and a check that each alternate links back.
- People Also Ask extraction
- An option on the Advanced tab extracts People Also Ask questions from Google results, including several levels deep.
- Right-click shortcuts
- Open the current page or site in Ahrefs, Moz, Majestic, Semrush, Similarweb or Archive.org, or run a site: search, from the context menu.
SEO Spider Tools
- Indexing directives
- Finds URLs blocked by robots.txt and pages set to noindex, nofollow, noarchive or nosnippet, and shows resources blocked from rendering.
- Links and redirects
- Lists inlinks and outlinks with anchor text and follow status, and finds broken links, redirect chains and loops, JavaScript redirects and meta refreshes.
- Status and speed
- Shows status codes, SSL, server type, response time, file sizes and load time, plus Core Web Vitals scores for mobile and desktop from PageSpeed Insights.
- Tags and structured data
- Checks titles, descriptions and H1 to H6 headings for length and duplicates, canonical and hreflang tags, schema errors and pages under 250 words.
- Content editor
- Edit page text with alerts on title, description and heading limits, and counts of characters, words, sentences, repeated words and keyword density.
- .htaccess generator
- Builds an .htaccess file with 301 redirects, a www rewrite, caching rules for scripts and images, hotlink protection and custom error pages.
Plans
Detailed SEO Extension
Free$0
Every feature of the extension, free to install from the Chrome Web Store or Firefox Add-ons.
SEO Spider Tools
Free$0
The extension's on-page and technical checks, free from the Chrome Web Store.
Common questions
Which is cheaper, Detailed SEO Extension or SEO Spider Tools?
As of Oct 23, 2026, both Detailed SEO Extension and SEO Spider Tools are free to use.
Which has a free plan, Detailed SEO Extension or SEO Spider Tools?
As of Oct 23, 2026, both Detailed SEO Extension and SEO Spider Tools have a free plan.
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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.