Technical SEO: The Fixes That Actually Move Rankings

Technical SEO has a poor reputation because it is often sold as a mystery. It is not. On the business sites we audit, the same small set of faults accounts for most of the lost visibility, and all of them are verifiable rather than matters of opinion.

One page, one URL

The most common and most damaging fault is the same content being reachable at several addresses: with and without www, with and without a trailing slash, over http and https, with tracking parameters attached, and through legacy paths that were never retired. Search engines then split the signals for that page across all of them and rank each one worse than the single consolidated version would have.

The fix is unglamorous: pick one canonical form, redirect every other variant to it with a permanent redirect, and emit a canonical tag built from that fixed origin rather than from whatever hostname the request arrived on.

// Build the canonical from a constant, never from the request host.
// Deriving it from $_SERVER["HTTP_HOST"] emits a different canonical
// per hostname, which is the bug it was meant to prevent.
define("CANONICAL_URLROOT", "https://www.example.in");

function canonical(string $path): string {
    return CANONICAL_URLROOT . "/" . ltrim($path, "/");
}

Make sure what you serve is what gets indexed

If your content only appears after JavaScript runs, indexing becomes slower and less reliable. Server-render the pages that need to rank. Then check the basics that quietly block everything: a stray noindex left over from staging, a robots file that disallows a section, or a sitemap listing URLs that redirect or return errors.

"Before optimising anything, confirm the page can be crawled, is not blocked, and resolves to exactly one address. Most audits end there with plenty to do."

Speed, measured on the device people use

Test on a mid-range Android phone on a throttled connection, not on your desktop. The recurring culprits are oversized images served at full resolution, render-blocking scripts in the head, fonts that delay text, and layout that shifts as elements load. Fixing images alone often halves load time.

Structured data, where it is warranted

Mark up what genuinely exists on the page: your organisation and contact details, breadcrumbs, articles, job postings, products. Done properly this earns richer results. Done as a trick, describing things not visible on the page, it earns a manual penalty instead.