The StackOptic Blog
Practical guides on identifying website technologies, SEO and GEO, web performance and lead generation — from the team behind StackOptic.
How to Test and Validate Structured Data
Structured data only helps if it is valid. How to test it with the Rich Results Test and Schema Markup Validator, read errors vs warnings, fix common mistakes.
What Is Duplicate Content and How to Fix It
Duplicate content splits ranking signals across copies of a page. What causes it, why it is rarely a penalty, and the fixes: canonicals and redirects.
What Is a 301 Redirect and When to Use It
A 301 redirect permanently moves one URL to another and passes its ranking signals. How 301 differs from 302, 307 and 308, when to use each, and how to test it.
What Is Internal Linking and How to Do It Well
Internal links connect your pages, shape crawl paths and spread link equity. How they work, descriptive anchors, topic clusters, click depth and auditing.
What Is Technical SEO and How to Audit It
Technical SEO makes your site easy to crawl, index and render. What it covers, why it matters, and a practical audit checklist with the tools to run each check.
How to Optimize for Apple Maps and Bing Places
Google is not the only local map that matters. Here is how to claim and optimise your business on Apple Maps and Bing Places, and why doing so pays off.
How to Get More Google Reviews
Reviews drive local prominence and conversions. Here is how to earn more Google reviews the right way — compliant asks, easy links, and Google's rules.
What Is Sales Prospecting and How to Do It
Sales prospecting explained: inbound vs outbound, the workflow from ICP to handoff, the core channels, using website signals, and the metrics that matter.
How to Enrich Your CRM Data
Fill the firmographic, technographic and contact gaps in your CRM: what enrichment is, where each field comes from, manual versus automated, and staying fresh.
What Is Intent Data and How to Use It
Intent data shows which accounts are researching what you sell: first-party vs third-party signals, topic surges, and combining intent with technographics.
What Are Screen Readers and How Do They Work?
Screen readers turn web pages into speech and braille for blind users. Here is what they are, how they read a page, and how to test your site with one.
What Is Color Contrast and How to Meet WCAG
Low contrast is the web's most common accessibility failure. Here is what contrast ratio means, the WCAG minimums to hit, and how to fix it without ugly design.
How to Make a Website Keyboard Accessible
Keyboard accessibility is a WCAG cornerstone. Here is how to make every control operable and focus visible, with no traps, and how to test it by keyboard.
What Is DNSSEC and Should You Enable It?
A clear guide to DNSSEC: how cryptographic signatures protect DNS from spoofing, what it does and does not do, how to check it, and whether to enable it.
How to Reduce JavaScript and Speed Up Your Site
Excessive JavaScript is costly to download and run, hurting INP and LCP. How to reduce it: code-splitting, tree-shaking, defer/async and auditing third parties.
How to Check if a Website Uses Google Tag Manager
Google Tag Manager leaves clear signals: a gtm.js script, a GTM-XXXXXX container ID, the dataLayer array and a noscript iframe. Here is how to detect it.
How to Tell if a Website Is Built with Wix or Squarespace
Wix and Squarespace leave distinct fingerprints. Here is how to tell them apart using headers, asset domains, generator tags and cookies, side by side.
How to Do Local Keyword Research
Local keyword research finds the exact terms nearby customers search for. How to find geo-modified keywords, judge their intent, and map them to pages.
How to Run an Accessibility Audit (Step by Step)
A repeatable accessibility audit process: define scope and target, test automatically and manually, log issues against WCAG, then prioritise, fix and retest.
How to Protect Your Website from Common Attacks
A defensive walkthrough of the OWASP Top 10 risks, and how site owners actually defend against them: validation, access control, patching and headers.
How to Read a Website's HTTP Response Headers
HTTP response headers reveal a site's server, CDN, caching, cookies and security posture. Here is what each header means and how to read them yourself.
What Is a CDN, and Do You Need One?
A CDN caches your content on edge servers close to users, cutting latency and TTFB. What a CDN does, the main providers, who needs one, and how to spot one.
How to Use Technographics for Account-Based Marketing
How technographics sharpen ABM: segment target accounts by tech stack, prioritise by fit and need, craft stack-aware messaging, and time trigger-event plays.
How to Tell if a Website Is Built with Webflow
Webflow leaves clear fingerprints. Here is how to confirm a site is built with Webflow using the data-wf-page attribute, the generator tag and webflow.js.