Find the issue before it becomes another SEO-dev loop.Open a page. Open DeepDOM. Find implementation issues without bouncing between tools, browser tabs and team messages. Compare raw HTML with the rendered DOM, inspect key SEO signals, follow redirects, review page content and export an audit that your development team can actually use.

Free to use. No account required. Opens in the Chrome side panel. Works on most public websites.

Find the issue before it becomes another SEO-dev loop.

A developer ships an update. An SEO checks the live page. The title is in the wrong place, a canonical is missing, content only appears after JavaScript runs, or a redirect behaves differently than expected. Then come screenshots, messages, rechecks and another release.

DeepDOM brings the signals into a single Chrome side panel so technical SEOs can investigate quickly, developers can run their own checks before handing work over, and QA engineers can validate page-level SEO requirements during testing.

It does not replace a full crawl, Search Console or a professional review. It makes the page in front of you easier to inspect and the next action easier to explain.

For technical SEOs	For frontend developers	For QA engineers
Spot page-level issues and inspect technical changes without switching between separate utilities.	Check SEO-related implementation before requesting review; understand where a page needs attention.	Add practical page-level SEO checks to release and regression testing.

One page. One side panel. A clearer technical SEO review.

Install DeepDOM from the Chrome Web Store. No login or account setup is required.
Open the page you want to inspect and click the DeepDOM extension icon. The page stays visible while DeepDOM opens in the Chrome side panel.
Start with the overall score and critical issue summary, then open the Issues tab to inspect the findings. Select a finding to view more detail in its related section.
Move through headings, links, images, content, schema, Core Web Vitals, redirects, rendering and scripts as needed.
Export a PDF report, or copy the report and relevant issue details to share with your developer or QA team.

Screenshot 1:

website + side panel

Screenshot 2:

Issues panel and one expanded issue.

Screenshot 3:

PDF report preview

Technical SEO checks and content analysis without the tab overload.

DeepDOM groups page-level diagnostics in a single interface. Start with the issue summary or jump straight to the area you are working on.

Feature	What DeepDOM Does
SEO Overview and Issue Explorer	See a page-level SEO score, critical findings and warnings. Open a specific issue to investigate it rather than reading a flat checklist.
Raw HTML vs Rendered DOM	Compare what the server returns with what appears after JavaScript runs. DeepDOM highlights differences and helps investigate client-side rendering changes.
JavaScript / SSR / CSR Analysis	Review server-delivered and browser-rendered output and inspect rendering-related differences in key page elements.
Metadata and Indexability Signals	Inspect titles, meta descriptions, canonical links, robots directives, HTML language and social metadata.
Hreflang and International SEO	Inspect hreflang implementation as part of a page-level technical SEO review.
Schema Detection and Recommendations	Inspect structured data and get page-type-based schema suggestions. Treat suggestions as starting points and validate them against visible content and Google's applicable guidelines.
Headings, Links and Images	Review heading hierarchy, inspect internal and external links and their attributes, and identify missing image alternative text and sizing information.
Redirects and Response Codes	Trace redirect chains, inspect HTTP status codes and look for loops or unexpected hops.
Core Web Vitals and Speed Signals	Inspect the performance metrics available in the extension, including Web Vitals and network timing signals where available.
Content and Intent Analysis	Review word count, readability, headings, likely keyword focus, inferred search intent, snippet opportunities and additional on-page content indicators.
Rule-Based Recommendations	Use built-in rule-based recommendations as investigation prompts, not as definitive statements about Google rankings or fixes.
Shareable Audit Reports	Export PDF reports or copy audit findings for development handoff.

The HTML looks fine. Does the page actually make sense?

Technical issues are only part of a page review. DeepDOM also brings content and search-intent signals into the same workflow, helping you question whether a page addresses the likely query, uses a coherent heading structure and gives visitors a clear next step.

WHAT THE CONTENT TAB CAN HELP YOU INSPECT

Likely target keyword and search intent; heading-to-topic alignment; keyword focus and one-, two- and three-word terms; introduction and heading logic; content depth and potential missing angles; snippet suggestions and possible featured-snippet opportunities; CTA presence and potential conversion mismatch; word count, estimated reading time, Flesch readability, paragraphs, sentences, average words per paragraph, language, vocabulary and word complexity; plus detected markup, forms, iframes and scripts.

ACCURACY NOTE

These are deterministic, rule-based estimates from the current page, not LLM responses. Inferred keywords and intent are hypotheses, not search-volume data, actual Google rankings, or proof of how Google understands a URL. A visual featured-snippet opportunity is not a confirmed SERP opportunity.

Content Suggestion Feature

See what arrived in HTML. See what JavaScript changed.

A page can look correct in your browser while its server response tells a different story. DeepDOM compares raw HTML and the rendered DOM, highlights differences and helps you inspect elements introduced or changed during rendering. Use it when debugging JavaScript-heavy pages, unexpected content changes and technical SEO regressions.

USE CASE

Example: A category page looks populated in Chrome, but its initial HTML contains no product links. Compare the raw response and rendered output to identify what JavaScript adds, then investigate the indexing implications using Google Search Console and server-side evidence.

This example describes a possible workflow, not an observed DeepDOM test result. DeepDOM’s analysis alone does not establish what Googlebot indexed.

Inspect structured data. Get suggestions that fit the page.

Find existing JSON-LD, inspect schema types and review suggestions based on the detected page type and available content. A product page, article, listing page and event detail page should not receive the same generic recommendation. DeepDOM helps point you toward relevant markup and areas to validate.

Before implementing any suggestion, confirm the entity exists on the page, the properties are accurate and the markup meets the relevant search platform’s requirements. Structured data does not guarantee rich results.

Stop writing the same bug report from scratch.

Once you have investigated a page, export the audit to PDF, or copy the results for your team. A shared report gives developers a clearer starting point than “SEO is broken on this URL.” It also gives QA a record of what was checked before or after release.

DeepDOM is a diagnostic and reporting tool. It does not automatically implement fixes or guarantee fewer review cycles for every team.

Made for the people doing the technical work.

Technical SEO professionals

Investigate live-page signals, compare rendering, inspect schema and identify page-specific problems. Use exportable reports to give developers more useful context when you raise an issue.

Frontend developers

Check metadata, headings, links, rendering changes, redirects and structured data as part of implementation. Catch potential SEO regressions before handing a page back for another round of review.

QA engineers

Use DeepDOM for page-level spot checks during launches, migrations and regression testing. Validate the page you are testing rather than assuming a visual pass means the SEO implementation is correct.

A fast page audit is not a complete SEO audit.

DeepDOM analyzes the active browser tab and a single URL redirect chain. It does not crawl an entire website, query live Google SERP rankings, or maintain a backlink database. Use a site crawler for sitewide patterns, Google Search Console for indexing and performance, and a backlink tool for off-page link data. Its snippet preview is a visual preview, not an actual Google results check.

This clear scope improves trust and sets expectations for experienced SEOs and engineering teams.

Built by someone who got tired of the back-and-forth.

I’m Mithilesh Joshi, an SEO consultant. I built DeepDOM after spending too much time identifying technical issues, explaining them to developers, waiting for changes and checking the same things again. I wanted a practical way for SEOs to investigate faster and for developers to test more of their own work before review. DeepDOM is my attempt to make that handoff easier.

The extension is free. Install it, put it to work on a real page and tell me where it helps or falls short.

Free to install. No account required.

DeepDOM is free, requires no login, and runs its page analysis and deterministic content/schema recommendations locally. It does not integrate with Gemini, OpenAI or another LLM API. Some checks, such as requests to inspect links or root files, may involve browser network requests; describe those accurately in the privacy policy.

PRIVACY LINK

MANDATORY PUBLISHING CHECK

The current build has no AI or LLM API calls. Verify any browser network requests made by optional page checks, and align the privacy policy and Chrome Web Store disclosures with actual behavior.

DeepDOM FAQs: 20 Questions Every SEO and Developer Should Ask

Frequently Asked Questions About DeepDOM

Got questions about technical SEO, JavaScript rendering, schema or another mysterious deployment? Here are some straight answers about DeepDOM.

About DeepDOM

1. What is DeepDOM, and why should SEOs care?

DeepDOM is a free technical SEO Chrome extension that checks meta tags, canonicals, schema, rendering, links, content, Core Web Vitals and more in one place.

Because opening 10 different tools to audit one URL shouldn't be part of your job description.

2. Is DeepDOM really a free technical SEO Chrome extension?

Yes. Completely free. No login, no subscription and no "pay $29 to unlock the actual results" surprise.

Install it, open a website and start debugging.

Install DeepDOM for Free

3. Can developers use DeepDOM without asking the SEO team 50 questions?

Absolutely. Developers can check canonicals, robots directives, rendering, schema and other SEO implementation details before sending work for review.

Less back-and-forth. Fewer tickets. Hopefully, fewer "It's working on my machine" conversations.

4. What makes DeepDOM different from other SEO Chrome extensions?

DeepDOM brings technical audits, rendered DOM comparison, content analysis, schema suggestions, redirect inspection and exportable reports into one Chrome side panel.

It doesn't claim to replace every SEO tool. It simply saves you from switching tabs like you're playing a browser-based video game.

Technical SEO and JavaScript Debugging

5. How can I check if JavaScript is affecting my website's SEO?

Use DeepDOM's Render tab to compare raw HTML with the JavaScript-rendered DOM.

It highlights differences in links, headings, images and paragraphs.

Because a page looking beautiful in Chrome doesn't automatically mean its important content is available in the server response.

6. Can DeepDOM compare server-side rendering (SSR) and client-side rendering (CSR)?

Yes. DeepDOM compares server-delivered HTML with the rendered DOM, highlights changes and shows the distribution of server-delivered and JavaScript-generated elements.

It helps investigate rendering dependencies, although it isn't a definitive test of every framework rendering mode.

React developers, this isn't personal. We just need to know where the content went.

7. Can DeepDOM catch the classic "noindex on production" disaster?

Yes. DeepDOM checks robots directives, canonical tags and related configuration issues.

Because spending six months building a website only to tell Google "Please don't index this" is quite an achievement.

8. Can DeepDOM identify canonical and hreflang issues?

Yes. DeepDOM checks canonical URLs, detects certain canonical conflicts and examines hreflang implementation.

It helps identify issues on the current page, but it doesn't crawl every language version or validate an entire international website.

Your canonical shouldn't point to a completely different page unless there's a legitimate reason.

9. Can I find broken links and redirect chains using DeepDOM?

Yes. DeepDOM can check the HTTP status of up to 50 links on the active page and inspect the current URL's redirect chain.

You can review redirect hops, status codes, response headers and latency.

A redirect chain longer than your approval process deserves investigation.

10. Can DeepDOM help developers test SEO before deploying website changes?

Yes. Developers and QA engineers can use DeepDOM to inspect a page's SEO implementation before handing it over for final review.

Check headings, canonicals, robots directives, schema, links and rendered content.

It doesn't replace pre-production testing or a full SEO audit, but it helps catch avoidable mistakes early.

Schema and Content Optimisation

11. Can DeepDOM automatically recommend schema markup based on page type?

Yes. DeepDOM analyses page signals, classifies the page into one of 14 archetypes and recommends relevant schema types.

It also explains why a schema was suggested and highlights missing information.

No, adding Product, Event, Recipe and FAQ schema to your About Us page won't make Google think you're a genius.

12. Can DeepDOM detect invalid JSON-LD structured data?

Yes. DeepDOM detects JSON-LD, displays the markup in an expandable format and reports syntax issues and warnings.

You can also copy the structured data for further investigation.

For Google-specific eligibility, confirm the implementation against Google's documentation and validation tools.

13. Can DeepDOM identify a page's likely target keyword and search intent?

Yes. DeepDOM uses local algorithms to analyse keyword patterns, headings and page content.

It estimates a likely target keyword and classifies probable intent as informational, commercial or transactional.

It doesn't fetch Google's actual ranking keywords or live SERP results.

If your page says "Buy Now" everywhere but never explains what you're selling, don't blame the algorithm.

14. Can DeepDOM help identify content gaps and readability problems?

Yes. DeepDOM reviews content depth, introduction clarity, heading logic, likely search intent and readability.

It also calculates word count, reading time, keyword frequency and Flesch Reading Ease.

It's useful for identifying areas worth reviewing, not for declaring that every page needs exactly 2,000 words.

Google never asked you to write a novel for a simple answer.

AI Search and Modern SEO

15. Can DeepDOM help optimise websites for Google AI Overviews and AI search?

DeepDOM helps investigate technical and content signals relevant to search accessibility, including rendering, structured data, headings, internal links and content organisation.

These checks can support your broader AI search optimisation work.

However, DeepDOM doesn't track AI citations or guarantee appearances in Google AI Overviews, ChatGPT or Gemini.

Sorry, there's no "Make ChatGPT recommend my brand" button. SEO still requires actual work.

16. Does DeepDOM use artificial intelligence to generate SEO recommendations?

No. DeepDOM currently uses deterministic, locally running algorithms rather than external AI or LLM APIs.

Its content analysis, search intent estimates and schema suggestions are based on predefined logic.

Not every tool needs to slap "AI-powered" on its homepage. Sometimes useful engineering is enough.

17. Can structured data improve my website's visibility in AI search?

Structured data helps describe the entities and information represented on a page. Accurate markup can support search engines' interpretation of eligible content.

However, schema alone doesn't guarantee visibility in AI-generated answers or citations.

DeepDOM helps identify relevant schema opportunities and implementation issues.

Adding more schema isn't a shortcut to becoming an authority. Nice try, though.

Performance, Reporting and Limitations

18. Can DeepDOM check Core Web Vitals without opening PageSpeed Insights?

Yes. DeepDOM provides browser-observed performance metrics such as LCP, INP, CLS, FCP and TTFB.

It also provides a direct link to Google PageSpeed Insights.

Its local measurements are not equivalent to Google's aggregated CrUX field data.

One fast test on your expensive laptop doesn't mean every user on a slow mobile connection is having a great experience.

19. Can I export technical SEO reports and share them with developers?

Yes. DeepDOM supports PDF reporting and lets you copy audit information for development handoff.

Find the issue, review the explanation and share your findings with the development team.

Much better than sending a screenshot with "SEO issue. Please check ASAP."

The developer deserves a little context, too.

20. Can DeepDOM replace Screaming Frog, Ahrefs or other enterprise SEO tools?

No. DeepDOM focuses on detailed, single-page technical SEO debugging.

It doesn't offer site-wide crawling, an external backlink database or automated SERP rank tracking.

Use a crawler for site-wide analysis, a backlink platform for link intelligence and DeepDOM when you need to investigate a particular page.

Different tools solve different problems. One extension doesn't need to run your entire SEO department.

Find SEO issues before they become another Jira ticket.

DeepDOM helps SEOs, developers and QA teams investigate technical SEO problems directly inside Chrome.

No login. No subscription. No unnecessary drama.

DeepDOM: Technical SEO debugging, right beside your website.