Top 100 SEO Interview Questions and Answers

Search engine optimisation is the practice of improving a website so it ranks higher in unpaid (organic) search results, attracting more relevant visitors. It covers technical SEO, on-page SEO, content and off-page SEO.

SEO means making your website the best, clearest answer to what people search for — so Google understands it, trusts it and shows it near the top.

Most buying journeys start with a search. Organic results bring consistent, high-intent traffic without paying for every click, and they build trust and brand visibility over time.

A system that crawls the web, stores pages in an index and ranks them to answer a user’s query — for example Google, Bing, YouTube and Amazon’s product search.

In three stages: crawling (Googlebot discovers pages by following links and sitemaps), indexing (pages are analysed and stored) and ranking/serving (the most relevant, helpful pages are shown for each query).

The search engine results page — the page Google shows for a query, including organic results, ads, local packs, featured snippets, images, videos, “People also ask” and AI Overviews.

Organic results are earned through relevance and quality; paid results (Google Ads) are ads bought through an auction and labelled “Sponsored”.

SEO earns organic traffic; SEM (search engine marketing) usually means paid search advertising. Some people use SEM to describe both together.

Technical SEO, on-page SEO, content SEO, off-page SEO (links and mentions), local SEO, e-commerce SEO and international SEO.

Individual pages are ranked for queries, although site-wide signals such as overall quality and authority influence how well pages perform.

A domain is a website’s human-readable address (digitalakash.in). The TLD is the last part — .com, .in, .org. Country TLDs such as .in can help signal a country focus.

Uniform Resource Locator — the full address of a page, such as https://www.example.com/blog/seo-tips.

Hosting stores your website on a server. Fast, reliable hosting improves page speed and uptime, which affect user experience and crawling.

Ethical SEO that follows search engine guidelines — helpful content, good user experience and earned links.

Manipulative tactics that break guidelines — keyword stuffing, cloaking, hidden text, link schemes, private blog networks and scaled spam content. They risk penalties and lost rankings.

A word or phrase people type or speak into a search engine. In SEO, we choose keywords that match what our audience searches for and what our pages offer.

The reason behind a search — informational (learn), navigational (find a site), commercial (compare) or transactional (buy). Matching intent is essential to rank.

A longer, more specific phrase (for example “SEO course in Bangalore with placement”). It has lower volume but clearer intent and is usually easier to rank for.

Start from the business and audience, gather ideas from Search Console, Google Keyword Planner, autocomplete, “People also ask” and tools like Semrush or Ahrefs, check volume, difficulty and intent, then map keywords to pages.

A tool metric (in Ahrefs, Semrush and others) estimating how hard it is to rank in the top 10, usually based on the links of current top-ranking pages.

The percentage of times a keyword appears in text. There is no ideal density; write naturally and cover the topic fully. Repeating keywords excessively is keyword stuffing.

When several pages on the same site target the same query and compete with each other. Fix it by merging, re-targeting or linking clearly to one main page.

Assigning a primary keyword and related terms to each page, so every important search has one clear, best page.

A popular but inaccurate term. Google does not use Latent Semantic Indexing. What matters is covering related subtopics, entities and questions naturally.

Content created primarily for people that demonstrates experience and expertise, answers the query fully and leaves readers satisfied — the focus of Google’s ranking systems.

Experience, Expertise, Authoritativeness and Trust — concepts from Google’s quality rater guidelines describing what makes content credible, especially for health, money and safety topics.

The same or very similar content on multiple URLs. It is not a penalty in itself, but it wastes crawling and splits signals; fix it with canonicals, redirects or unique content.

Pages with little original value — very short, auto-generated or copied content. Improve, merge or remove such pages.

A pillar page covering a broad topic, linked to and from detailed cluster articles — building topical authority and clear internal linking.

Answer questions clearly and directly near the top, use descriptive headings, lists and tables, keep facts accurate and add structured data where relevant.

Optimising elements on the page itself — content, title tag, meta description, headings, URL, images, internal links and structured data.

The HTML title of a page, often shown as the clickable headline in search results. Make it unique, descriptive and keyword-relevant, ideally around 50–60 characters.

A short page summary that may appear under the title in search results. It is not a direct ranking factor but strongly influences click-through rate.

HTML headings that structure content. Use one clear H1 for the main topic and H2/H3 for sections, so readers and search engines understand the page.

Alternative text describing an image for screen readers and search engines. Describe the image accurately and naturally include keywords only where relevant.

Keep it short, readable and descriptive, use hyphens, include the main keyword, use lowercase and avoid unnecessary parameters.

Links between pages on the same website. They help users navigate, help Google discover pages and pass authority to important pages.

The clickable text of a link. Descriptive anchors help users and search engines understand the destination; avoid over-optimised exact-match anchors.

A highlighted answer shown at the top of some search results, taken from a web page — often a paragraph, list or table.

Code (usually JSON-LD using Schema.org) that describes page content — articles, products, FAQs, events, local businesses — helping search engines understand it and enabling rich results.

Enhanced search results such as star ratings, product prices, event details or breadcrumbs, made possible by structured data.

A rel="canonical" link that tells search engines which URL is the preferred version among duplicates or near-duplicates.

Use descriptive file names and alt text, compress images, use modern formats such as WebP, set width and height, and lazy-load images below the fold.

The percentage of impressions that become clicks. Improve it with compelling titles and meta descriptions, rich results and matching search intent.

It answers the query well, loads fast, works on mobile, is crawlable and indexable, has a clear structure and is linked from relevant pages.

Optimising a site’s infrastructure so search engines can crawl, render and index it efficiently — speed, mobile-friendliness, architecture, sitemaps, robots.txt, redirects, canonicals and structured data.

The process by which Googlebot discovers and downloads pages by following links and reading sitemaps.

Analysing a crawled page and storing it in Google’s index so it can appear in search results.

The number of URLs Googlebot can and wants to crawl on a site. It mainly matters for very large sites; reduce waste from duplicates, parameters and errors.

A file at the root of a site that tells crawlers which paths they may or may not crawl. It controls crawling, not indexing — use noindex to keep pages out of the index.

noindex lets Google crawl the page but keeps it out of the index; disallow stops crawling, so Google may still index the URL from links without seeing its content.

A file listing the important, indexable URLs of a site, helping search engines discover them. Submit it in Google Search Console and Bing Webmaster Tools.

A page for users listing links to important sections and pages of a website.

Google predominantly uses the mobile version of a page for indexing and ranking, so mobile content and performance are what count.

Google’s user-experience metrics: Largest Contentful Paint (loading), Interaction to Next Paint (responsiveness, replaced FID in 2024) and Cumulative Layout Shift (visual stability).

Optimise and resize images, use caching and a CDN, minimise and defer JavaScript and CSS, reduce third-party scripts, use good hosting and preload key resources.

HTTPS encrypts data between the browser and server. It is a lightweight ranking signal and essential for user trust; browsers flag HTTP pages as “Not secure”.

A permanent redirect that sends users and search engines from an old URL to a new one, passing most ranking signals. Use 302 for temporary moves.

A “not found” response. 404s for removed pages are normal, but broken internal links and important pages returning 404 waste link value and hurt user experience.

Multiple redirects in a row (A → B → C). They slow pages and waste crawling; redirect directly to the final URL.

Making sure content rendered with JavaScript can be crawled and indexed — using server-side rendering or pre-rendering where needed and testing rendered HTML.

An attribute that tells Google which language or regional version of a page to show — for example English for India (en-IN) versus English for the US (en-US).

Use the Pages (indexing) report and URL Inspection tool in Google Search Console. The site: search operator gives only a rough sample.

The URL Inspection tool in Google Search Console, which shows how Google sees a URL and lets you request indexing.

No. AMP is no longer required for Top Stories; a fast, mobile-friendly page with good Core Web Vitals is enough.

Activities outside your website that build authority and trust — earning backlinks, brand mentions, digital PR, reviews and local citations.

A link from another website to yours. Links from relevant, trusted sites act like votes of confidence and help pages rank.

Links help Google discover pages and judge their authority. Quality and relevance matter far more than quantity.

A normal (“dofollow”) link can pass ranking signals. rel="nofollow" asks search engines not to pass them; Google treats nofollow, sponsored and ugc as hints.

sponsored marks paid or affiliate links; ugc marks links in user-generated content such as comments and forums.

A relevant, editorially given link from a trusted site, placed in the main content, with natural anchor text, that real visitors might click.

A link placed within the main body content of a page, rather than in a sidebar, footer or author box.

Writing an article for another website in your industry. It builds exposure and authority; links in guest posts made mainly for SEO should be qualified (nofollow or sponsored).

Any attempt to manipulate rankings with links — buying or selling links, excessive link exchanges, automated links or private blog networks. It violates Google’s spam policies.

A private blog network — sites built (often on expired domains) to link to a “money site”. It is a black-hat link scheme that risks penalties.

Create linkable assets (research, tools, guides), do digital PR, get listed in quality directories and citations, build partnerships, guest post on reputable sites and reclaim unlinked mentions.

Likes, shares and comments on social media. They are not a direct Google ranking factor, but social media helps content get discovered and earn links.

A file submitted in Search Console asking Google to ignore specific links. Use it only for large numbers of manipulative links you cannot remove, or after a manual action.

A Moz metric (1–100) predicting a site’s ranking ability based mainly on links. Google does not use it; similar metrics include Ahrefs DR and Semrush Authority Score.

Listing a website in online directories. Relevant, moderated and local directories can help with citations and visibility; low-quality directories offer little value.

Optimising a business to appear in local searches and Google Maps — for example “dentist near me” or “SEO course in Bangalore”.

Google’s free business listing (formerly Google My Business) that appears in Search and Maps, showing details, reviews, photos and posts.

Name, Address and Phone number. Consistent NAP across your website, Google Business Profile and directories helps local rankings.

Mentions of your business’s NAP on other websites, such as Justdial, Sulekha and IndiaMART.

Relevance (how well the profile matches the search), distance (from the searcher) and prominence (reviews, links, citations and overall reputation).

The number, quality and recency of reviews — and replying to them — influence prominence and click-through.

The map with three business listings shown for local searches, above or within the organic results.

Complete and verify your Google Business Profile, choose the right categories, earn reviews, post regularly, keep NAP consistent and build local content and links.

Google’s free tool (formerly Webmaster Tools) showing search performance, indexing, Core Web Vitals, manual actions and security issues.

To measure organic traffic, engagement, landing pages and key events (conversions) from organic search.

Organic traffic, rankings and impressions for target keywords, CTR, conversions and revenue from organic search, and the growth of quality backlinks.

The percentage of sessions that were not engaged — lasting under 10 seconds with no key event and only one page view. It is the opposite of engagement rate.

An informal term for how long a searcher stays on a result before returning to the search results. Google has not confirmed it as a direct ranking factor; focus on satisfying the searcher.

Typical answers: Google Search Console, GA4, PageSpeed Insights, Screaming Frog, Semrush, Ahrefs, Moz and Yoast or Rank Math for WordPress — with examples of how you used each.

A review of technical health (crawlability, indexing, speed, mobile), on-page elements, content quality, internal links, backlinks and competitors, with a prioritised action plan.

Launched in 2011, Panda targeted thin, duplicate and low-quality content. It is now part of Google’s core ranking systems.

Launched in 2012, Penguin targeted manipulative link building and over-optimised anchors. Since 2016 it works in real time and devalues spammy links.

Hummingbird (2013) focused on query meaning; RankBrain (2015) used machine learning to understand queries; BERT (2019) improved understanding of words in context.

A manual action applied by Google’s reviewers when a site breaks spam policies, shown in Search Console. Ranking drops after algorithm updates are not penalties but reassessments.

Follow Google Search Central (blog, documentation and Search Status Dashboard), Search Engine Land, Search Engine Journal and trusted SEO practitioners, and test changes on your own sites.