Detailed SEO Extension vs View Rendered Source (2026): which should you pick?
As of Oct 23, 2026, Detailed SEO Extension grades higher than View Rendered Source: 3.0 against 2.8 out of 4.0.
Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
Detailed SEO Extension 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.
Detailed SEO Extension
Free Chrome and Firefox extension for one-click on-page SEO checks
Free
View Rendered Source
Free Chrome extension comparing raw HTML with the rendered page
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 View Rendered Source if
- Fits if you check what a JavaScript-heavy page looks like before and after rendering
- Works for developers testing prerendering or dynamic rendering for Googlebot
Look elsewhere if
- Watch out: the last release, version 4.0, is from June 2023
- Skip it if you're not on Chrome, as there's no other version
- Too light for audits, since it compares one page's source and checks nothing else
- Not for you if you want a help page, as support is by X message to the developer
How we grade them
| 3.0GPADetailed SEO ExtensionVery good | 2.8GPAView Rendered SourceGood | |
|---|---|---|
| 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, with no paid version, account or sign-up mentioned anywhere in its listing. |
| Free plan and trial | AEvery feature is free, with no account, no plan to upgrade to and nothing held back. | AFree outright: raw, rendered and diff views and the Googlebot and mobile options, with nothing to upgrade to. |
| 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. | DOne narrow function: raw against rendered source with the differences highlighted, as Googlebot or a mobile browser if you like. No tags, links, schema or search data, and no audit. |
| 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, but nothing to set up: open a page, click the icon and the three views are there. |
| 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 only, so computers only, in English, with no website of its own and no integrations. Support is by X message to the developer. |
| Best for | one-click page checks in Chrome or Firefox | comparing raw HTML with the rendered page |
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 View Rendered Source. 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. View Rendered Source has no paid plan and scores 2.0.
Detailed SEO Extension scores higher 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 View Rendered Source 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
- Detailed SEO Extension also covers schema markup.
In commonFree planBrowser extensionSite audit
At a glance
| Detailed SEO Extension | View Rendered Source | |
|---|---|---|
| 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. | Free to install from the Chrome Web Store; the listing mentions no paid version, account or sign-up. |
| Free trial | None listed | None listed |
| Browser extension | ||
| Made by | Detailed | Peg Leg Ltd |
| 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.
View Rendered Source
- The last release, version 4.0, dates from June 2023.
- It is listed for Chrome only, with an English interface and no website of its own; support is by X message to the developer.
- It compares sources for one page at a time and does not crawl or audit a site.
- The listing says the developer will not collect or use your data.
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.
View Rendered Source
- Raw source
- The HTML sent from the server before the DOM is built, as the browser's own View Source shows it, lightly formatted.
- Rendered source
- The page after it has been turned into a DOM, including every change JavaScript has made to it.
- Line-by-line difference
- Highlights each line that differs between the raw and rendered versions, showing what JavaScript added or changed.
- Googlebot and mobile requests
- Request the raw source as Googlebot to check dynamic rendering setups, or tick a box to emulate a mobile user agent for adaptive sites.
Plans
Detailed SEO Extension
Free$0
Every feature of the extension, free to install from the Chrome Web Store or Firefox Add-ons.
View Rendered Source
Free$0
Raw, rendered and difference views with Googlebot and mobile user-agent options, free from the Chrome Web Store.
Common questions
Which is cheaper, Detailed SEO Extension or View Rendered Source?
As of Oct 23, 2026, both Detailed SEO Extension and View Rendered Source are free to use.
Which has a free plan, Detailed SEO Extension or View Rendered Source?
As of Oct 23, 2026, both Detailed SEO Extension and View Rendered Source 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.