SEO
Technical SEO Services: What to Buy and What to Ask
Technical SEO services make a website easy for search engines to crawl, understand and index, and fast enough for people to use. They cover indexing, site structure, page speed, structured data, redirects and multilingual setup. The value is in the fixes, so look for a provider that can change the code, not only report on it.
What are technical SEO services?
Content and links decide how well a page can rank. Technical SEO decides whether the page can be found, read and shown at all. A page that returns the wrong status code, hides its text behind a script that fails, or sits behind a redirect chain never gets a fair chance, however good the writing is.
The work sits between marketing and engineering, which is where it usually gets dropped. Marketers see the symptom, a page that will not index, but cannot find the cause in a template. Developers could fix the cause but were never told it matters. A good service owns both the finding and the fix.
If you want the wider picture first, our SEO service page shows how technical work fits with content and measurement.
What does a technical SEO service cover?
Seven areas make up the core. If a proposal skips more than one, ask why.
- Crawling and indexing. Which pages search engines can reach, which they are told to skip, and which they have chosen not to index. This includes the robots file, meta robots tags, canonical tags and the status code every URL returns.
- Site architecture and URLs. How pages link to each other, how deep important pages sit, and whether URLs are stable, readable and free of duplicates.
- Speed and Core Web Vitals. Loading, responsiveness and visual stability, measured on real phones and not only on a fast office connection. Google's documentation on Core Web Vitals is the reference. Core Web Vitals optimization usually means fixing images, fonts, scripts and layout shifts in the code.
- Structured data. JSON-LD that describes the organization, articles, products, services and FAQs, matching what is visible on the page. The Schema.org vocabulary is the standard.
- Sitemaps and feeds. A sitemap that lists only indexable URLs, with honest last-modified dates.
- Redirects and migrations. A map from every old address to its new one, tested before launch.
- International setup. Language and region signals such as hreflang, so the right version appears in the right market. Google explains hreflang in its documentation.
If your site is an application, add JavaScript rendering to the list. Content that only appears after a script runs may reach a search engine as an empty page, so test with the script disabled before you accept a proposal that ignores it.
Why does it matter who makes the fixes?
A technical SEO audit produces findings, and only shipped changes move rankings. When an agency hands over a spreadsheet, the work joins a developer queue and waits for a sprint and for someone to turn "fix the canonical on paginated pages" into a ticket. Some items get built differently from the recommendation. Some never get built, and nobody checks.
When the team that audits also builds, the person who sees the problem edits the template, runs the check and ships it. They also know what the template feeds, so they do not propose a fix that breaks the checkout. This is how we work at OZGN Studio: one team designs and builds the site and handles the SEO behind it.
What does technical SEO look like in a real build?
This site is the example we can show in full. It is built with Next.js and runs on Cloudflare, in English, Bulgarian and Turkish, and pages declare their available language versions with hreflang.
The structured data comes from shared builders in src/lib/structured-data.ts and the service and work schema modules. The Organization and WebSite nodes are defined once on the home pages, and every other page points to them by @id, so the graph has no duplicates. Service and article markup takes its text from the same content the page displays, which means the two cannot disagree. The sitemap is generated, and a post's last-modified date comes from its own updated field, so changing one article does not mark the whole site as fresh. The llms.txt file is generated from the same page list. Each of these is a single place to fix, which is the point: one correction reaches every page.
You can read more about the product in the NovaOracles case study.
Technical SEO agency or consultant: how do they compare?
| Consultant | Agency that only audits | Team that builds and fixes | |
|---|---|---|---|
| Main output | Advice and prioritized list | Report and recommendations | Shipped changes and checks |
| Who changes the code | Your developers | Your developers | The same team |
| Typical gap | Findings wait in a queue | Findings wait in a queue | Needs access to your repository |
| Fits when | You have strong in-house engineers | You need an outside opinion | You want results on the live site |
None of these is wrong. What matters is who owns the last step. A consultant is enough when your engineers have spare time and care about search. When they do not, hire a team that can open the code itself.
What should you ask a technical SEO provider?
Ask these before you sign anything.
- Can you make the changes yourself, and in which stack? A provider that has never worked in your framework will lose time on every fix.
- What will I receive at the end of the first month? The right answer lists changes on the live site, not pages of observations.
- How do you check that a fix worked? Look for Search Console data, crawl comparisons and field data for speed.
- What do you do about regressions? Fixes decay when a new template ships. Ask about checks that run on every release.
- How do you handle a site move or redesign? The answer should mention a URL inventory, a redirect map and monitoring after launch. Our guide to website redesign without losing SEO covers the checklist.
- What will you not promise? No honest provider guarantees a ranking or a date.
How does a technical SEO audit fit in?
An audit is the first step of the service, not the service. It compares what search engines see with what visitors see and ranks the differences by impact. A useful finding names a template and a fix: this template emits two canonical tags, this script delays the main image. What a full audit contains, and how to tell a real one from a tool export, is covered in our guide to SEO audit services. For the cost side, see SEO cost and SEO pricing packages, which explain what drives the number without quoting one.
What are common technical SEO mistakes?
Most damage comes from a short list. A robots rule that blocked the staging site and was never lifted at launch. URLs changed for tidiness with no redirects. One page reachable at several addresses with no canonical. A heavy hero image that pushes the content below the fold on phones. Structured data that describes things the page does not show, which search engines treat as misleading. A sitemap that lists everything instead of only the indexable pages.
All of these are cheap to prevent and slow to repair, so do the work during the build and keep a check in the release process. Website maintenance packages describe how ongoing upkeep can keep those checks running.
FAQ
What do technical SEO services include?
Technical SEO services cover crawling and indexing, site architecture and URLs, page speed and Core Web Vitals, structured data, sitemaps, redirects, canonical tags, hreflang for multilingual sites and rendering of JavaScript content. A complete service ends with the fixes shipped to the site, not with a list of problems.
What is the difference between a technical SEO agency and a technical SEO consultant?
A consultant usually audits and advises, and your developers make the changes. An agency can also implement them. The better setup for most businesses is a team that can both diagnose and change the code, because the gap between a recommendation and a deployed fix is where most technical SEO work stalls.
How long do technical SEO fixes take to show results?
Search engines must recrawl and reprocess the pages you changed, so results appear over weeks, not days. Fixes to indexing problems tend to show first. Speed and structure improvements build more slowly. Nobody can promise a ranking, and you should be wary of anyone who does.
Do I need technical SEO if my site is small?
Yes, but the scope is small. A small site needs clean indexing, a correct sitemap, sensible titles, fast pages on phones and structured data that matches the content. Most of it is done once at build time and then protected, so the ongoing effort is low.
Can technical SEO be done without changing the website code?
Some of it can, such as settings in a CMS or a plugin. Many fixes cannot, because they live in templates, routing, rendering and server responses. If your provider cannot change the code or work with the people who do, a share of the findings will never ship.
Where to start
Send the address of your site and what worries you about it to hello@ozgnstudio.com. We reply with what we would check first and whether the work is a one-time fix or a build-time habit. The SEO service page lists the scope, and how we work shows the steps from first audit to launch. If your site needs rebuilding as well, see web design and development.