How long until technical SEO improves visibility?

The first changes can appear once blocks are removed and URLs are reprocessed. Full results depend on the scale of the site, the type of errors and how fast fixes are deployed. We set the starting point with an SEO audit and Search Console data.

Do Core Web Vitals affect rankings?

Yes, but secondarily. Poor performance increases abandonment, especially on mobile. Good scores are a condition for growth, not a lever on their own, because content still has to answer the query better than the top results.

Should we block AI crawlers?

It is a business decision. Blocking means your content is not available as source material for AI answers, while allowing means exposing it in exchange for the chance of a citation. Make sure any block is intentional and not inherited from an old setup.

How do we migrate a site without losing traffic?

Crawl the old and new versions, map each old URL to its closest equivalent with a direct 301, and preserve content, metadata and internal linking. Check canonicals, hreflang, sitemaps and robots.txt, test before launch and monitor indexing, errors and traffic afterwards.

Is robots.txt enough to keep a page out of Google?

No. A blocked URL can still appear if Google discovers it elsewhere. Use noindex in the HTML or the X-Robots-Tag header, and keep the page crawlable so Google can read the instruction.

Does a small site need crawl budget optimisation?

No. Crawl budget is irrelevant for a few hundred pages. It starts to matter at tens of thousands of URLs, where limiting indexable parameters, removing redirect chains and keeping sitemaps clean help changes get noticed faster.

What if our problem is not technical?

Then we say so. If your impressions do not match what you sell, the cause is content or keyword choice, and an audit would not help. We would rather tell you than take the job.

Technical SEO

Technical SEO services: consulting and implementation

We remove the barriers that limit your visibility: indexing, speed, structure, technical errors and Core Web Vitals. The aim is a site that Google, and now AI crawlers, can find, read and evaluate.

Start with an SEO audit See case studies

Google Premier Partner 2026
Top 3% of Google Ads agencies in Poland
Microsoft Advertising Partner
Campaigns in 25 export markets

Technical SEO services that make your site easy to find

Technical SEO helps search engines find, crawl, interpret and index the right pages. It covers site architecture, URL structure, HTTP status codes, redirects, robots.txt and sitemaps, speed, JavaScript rendering, the mobile version, canonicals, internal linking and structured data.

We do not optimise for a tool score. We build a foundation that lets Google discover, understand and index the whole site, and we work with your developers to deploy and verify each fix. Technical work sits inside our wider SEO services, next to content, links and analytics.

SEO results from our own projects

+110%

keywords in the Google top 10 for an online pharmacy, with +230% in the top 50 and no paid ads

75+

studies and sources in our own meta-analysis of AI search

Can AI bots see your website?

Crawlers for language models now visit sites alongside search robots, and they affect whether your brand can be cited in AI answers. All of them are controlled in robots.txt. Blocks are often inherited from old agency setups, CDN providers or copied configurations. A blocked AI bot is not a penalty but an absence: your brand stops being source material for the model.

AI crawlers to check in robots.txt

Five-minute check: open yourdomain/robots.txt and look for these agents and Disallow rules. If one is blocked, first confirm it was intentional, for example to protect paid content. Allowing AI bots is a business decision: you expose content in exchange for the chance to be cited. See AI search optimisation.

Crawler	What it is
GPTBot	OpenAI's crawler
Google-Extended	Controls use of your content by Google's models. It does not affect search indexing
ClaudeBot	Anthropic's crawler
PerplexityBot	Crawler for content cited in Perplexity answers
CCBot	Common Crawl, used indirectly by many models

What to fix first

An audit can produce around 200 items, and then nothing gets done. This is the order we use for the technical layer. Full prioritisation, including content, linking and competition, happens in the SEO audit.

#	Area	What happens when it is broken	Cost to implement
1	Indexation and robot access	Pages do not exist in search	Low, usually configuration
2	Content rendering	The robot sees an empty page, typical for JavaScript apps	High, needs developer work
3	HTTP statuses and redirects	Link equity is lost in chains, errors appear and crawl budget is wasted	Low to medium
4	Duplication and canonicals	Several URLs compete for the same query	Medium
5	Performance and Core Web Vitals	More abandonment, especially on mobile. The effect on rankings is real but secondary	Medium to high
6	Structured data	Rich results are lost, which affects click-through, not position	Low

When the problem is not technical

Three symptoms are often mistaken for technical faults.

Traffic fell, but indexing is fine

If only some queries dropped, the cause is usually a change in the results, a new competitor or shifted intent.

Core Web Vitals are green, but there is no growth

Performance is a condition, not a lever. If your content does not answer the query better than the top 10, speed will not make up for it.

Pages are indexed but get no impressions

Usually there is no demand for the query, or cannibalisation: several pages target the same query and none is strong enough.

A quick test before you commission an audit

Compare the queries where a page gets impressions with what your business actually sells. If they do not match, the issue is content or keyword choice, not technical SEO. In that case we would rather tell you than sell you an audit.

How technical optimisation runs

The pace depends on the state of indexation and the type of errors, the technology and scale of the site, Core Web Vitals, and how fast changes go live. Recommendations only work after deployment, recrawling and reprocessing, so we verify every fix. The starting point comes from an SEO audit and Google Search Console data.

Technical audit, weeks 1–2
Indexing, crawl, sitemaps, robots.txt, HTTP statuses, canonicals, redirects, duplication, JavaScript and Search Console errors, with priorities ranked by impact.
Indexing and architecture, weeks 2–6
Removing blocks, cleaning up redirects and URLs, and improving internal linking and structure.
Performance and page quality, months 1–3
Speed, Core Web Vitals, images, scripts, rendering, structured data and UX.
Monitoring and development, ongoing
Indexing, errors, deployments and technology changes, including new sections, migrations and store expansion.

What a technical SEO audit covers

Accessibility and indexability of important pages.
HTTP statuses, redirects, 404 and server errors.
robots.txt, meta robots and X-Robots-Tag headers.
XML sitemaps and how well they match the real structure.
Canonicals, duplication and URL parameters.
Information architecture, click depth, internal linking and orphan pages.
JavaScript rendering and resource availability.
Core Web Vitals and performance of key templates.
Structured data, hreflang and language versions.
Differences between crawler data, server logs and Google Search Console.

Technical topics we handle

Robots.txt and indexing directives

robots.txt controls crawling but is not a reliable way to remove pages from the index. Noindex does that, and the page must stay crawlable or Google cannot read the instruction.

XML sitemaps

A good sitemap holds only indexable canonical URLs that return 200. It leaves out redirects, 404s, noindex and blocked pages, and duplicates canonicalised elsewhere.

Statuses and redirects

We use 301 or 308 for permanent moves, 410 for deliberate removals and fix soft 404s. We remove redirect chains and loops and update links to old URLs.

Canonicals and duplication

A canonical is a hint, not a command. Redirects, links, sitemaps, hreflang and content similarity all count. Filters, URL variants and tracking pages are common sources of duplicates.

Architecture and internal linking

Structure should follow your offer and how people search. Important pages should not sit deep or be reachable only through internal search.

JavaScript and rendering

We check that key content is in the rendered HTML, links have proper href attributes, resources are not blocked and server-side rendering or prerendering is used where needed.

Core Web Vitals

LCP, INP and CLS, measured with real-user and lab data. We work on images, fonts, third-party scripts, cache, server and heavy JavaScript.

Mobile-first indexing

Google mainly evaluates the mobile version, so content, links, structured data and metadata must match the desktop site.

Structured data

Schema.org markup that matches visible content helps engines understand organisations, products, articles, breadcrumbs, events, jobs and local businesses. It does not guarantee a rich result.

Stores, migrations and large sites

Technical SEO for online stores

Indexing of categories, filters and parameter combinations, unavailable and discontinued products, variant canonicals, pagination, duplicate descriptions, and Product, Offer and BreadcrumbList data. See ecommerce SEO.

Safe site migration

We crawl the old and new sites, map every old URL to its closest topical match with a direct 301, and keep content, metadata and linking. We test before launch and monitor indexing, errors and traffic after. Never redirect removed URLs to the homepage.

Crawl budget and server logs

Crawl budget does not matter for a few hundred pages, but at tens of thousands it sets how fast changes are noticed. Server logs show what the robot really did, including whether AI crawlers visit at all.

Monitoring

We watch the Search Console indexing report, 4xx and 5xx errors, sudden changes in indexed URLs, new noindex tags, robots.txt blocks, wrong canonicals, sitemap status and Core Web Vitals of key templates.

Technical SEO mistakes we see most often

Blocking important sections in robots.txt, including resources needed for rendering.
Noindex on valuable pages.
Conflicting canonicals between sitemap, links and canonical tag.
Redirect chains.
Orphan pages.
Indexing filters without a strategy, creating thousands of low-value URLs.
Content that appears only after interaction or form submission.
Sitemaps full of redirects, noindex pages and 404s.
Optimising for a PageSpeed score and ignoring real users and business goals.
No monitoring after deployment, so errors return as the site changes.

Why Double Digital

We are a Google Premier Partner 2026 (top 3% of Google Ads agencies in Poland), a Microsoft Advertising Partner and an OpenAI Select Partner. Our Clutch rating is 5.0 and our Google rating is 4.8. One team covers SEO, content, UX, analytics and performance, and we treat Google results and AI answers as one visibility strategy. This page was reviewed by Damian Dziergowski, CEO and founder.

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