JavaScript SEO and log file analysis · Marketing
Find out what search engines actually see on a site built with JavaScript.
Some websites send the browser an almost empty page and build the content with JavaScript. A person sees a full page. A crawler may see less, or see it late, or see a different page from the one you meant. React and Next.js sites are the usual cases, and the answer depends on how each page is rendered.
Scope, fee, reporting and term are agreed in writing after we have read your brief and spoken to you.
In one paragraph
JavaScript SEO and log file analysis covers two checks for sites that standard technical SEO cannot settle: whether pages built in the browser are rendered and indexed, and what server logs show about how crawlers move through a very large site. It is specialist work, agreed in writing.
Server logs are the other source of evidence. Every request a crawler makes is recorded on your server, so the logs show which pages are visited, which are ignored and where crawlers waste visits. On a site with hundreds of thousands of pages, that record is the only reliable view.
A site on a standard content platform does not need it. A standard technical SEO review covers a site built on WordPress or a similar platform. We start with the requirements brief, tell you plainly if this work is not needed, and agree scope and fee in writing after that brief.
The problem
Does this sound like your business?
What owners tell us on the first call, in their words.
“The page looks complete in a browser and reads as nearly empty to a crawler.”
When content is built in the browser, a search engine has to run the code before it can read the page. If that step fails or is skipped, the content is missed.
“Pages that matter are visited rarely while pages that do not matter are visited constantly.”
On a very large site, crawlers spend their visits on filter pages, duplicate addresses and old URLs. The important pages wait.
“Nobody can say what is happening because the usual tools show only part of the picture.”
A crawl tool shows what a site contains. Server logs show what crawlers did with it. Without the logs, the cause of an indexing problem stays a guess.
What we do
Everything that is included.
Each deliverable, and what it gets you. Nothing here is an extra.
Requirements brief and fit check
Your framework, page count, hosting and access to logs recorded, with a plain answer on whether this work is needed at all.
Rendering review
Key page types compared as a browser shows them and as a search engine reads them, with the differences listed.
Rendering approach findings
How each page type is built, whether content, links and tags are present in the page code, and what your developers could change.
Indexing check on rendered pages
Pages that load content with JavaScript checked against the search engine's own reporting for what it has indexed.
Server log analysis
Crawler requests read from your logs: pages visited, pages missed, error responses and visits spent on addresses that add nothing.
Findings and developer brief
Faults ranked and written clearly enough for your development team to act on, with the fix for each described.
How the result is measured
- Page types whose content appears in the page as a search engine reads it
- Share of crawler visits spent on pages you want indexed
- Important pages with no crawler visit in the logs
- Error responses served to crawlers
- Pages indexed against pages published
Recorded as a baseline before work starts, so every later report has an honest comparison.
Who it is for
This is written for you if these sound familiar.
- Businesses whose website is built on React, Next.js or a similar framework and whose pages do not appear in search as expected
- Marketplaces, directories and e-commerce stores with a very large number of pages
- Teams whose developers have changed how pages are rendered and want the effect on search checked
- Companies that already have a technical SEO review and still cannot explain why some pages are not indexed
- Businesses that keep their server logs and can share them for analysis
Not for
It is not the right fit if.
- Sites built on a standard content platform with a few hundred pages, where technical SEO is enough
- Owners who cannot share server logs and whose site renders its content in plain page code
How it works
From your first message to the first report.
No open-ended retainer. Every step gives you something in writing.
First
Your brief
You tell us what you need in a few short steps: your business, what you want, where enquiries come from and how they are handled.
After the brief
A conversation and a written scope
We read it, then talk with whoever handles your enquiries. If you want our help, the scope, the fee and the reporting come in writing, and nothing starts before you have read them.
Before work starts
Baseline recorded
The numbers this work is meant to move, such as enquiries, quotations, orders, visits or renewals, written down so every later report has an honest comparison.
After the baseline
The first fix goes live
The fix we agreed to start with is put in place and measured against the baseline, whether that is a reply, a follow-up, a page, a listing or the handover between marketing and sales.
As agreed
Report against the baseline
What moved, what did not, and what changes next, in plain words. How often you get it is set in writing before work starts.
At renewal
Renew on the numbers
The term ends and you decide whether to continue from the results. The length is agreed in writing before anything starts.
How the work runs
- 1
Take the requirements brief
We record how the site is built, how large it is and whether server logs can be shared, before proposing anything.
- 2
Agree scope and fee in writing
What we will review, what depends on your hosting and developers, and what it costs are written down after the brief.
- 3
Review rendering
We compare what a browser shows with what a search engine reads for each type of page on the site.
- 4
Read the logs
We analyse the crawler requests in your logs and match them against the pages you want visited.
- 5
Brief your developers
Findings are handed over as a ranked list with the fix described, and we check the result once changes are made.
Why us
Why owners pick GullySales over an agency.
Marketing and sales, as one job
Most agencies stop at the enquiry. We also fix what happens after it: the reply, the follow-up, the quote and the CRM.
The person on the first call does the work
No account managers in between. You are never handed to someone you have not met.
A baseline before anything starts
Your numbers are written down on day one, so every later report compares against something honest.
The fee in writing, split three ways
Our time, your media spend and production on separate lines. You always see what goes to us.
No guarantees we cannot keep
The term is agreed in writing and never a default twelve months. We never promise a ranking or a lead count, because nobody controls those.
One office, and we say so
Nagarbhavi, Bengaluru. We work across India by call and WhatsApp and travel when a session needs to be in person.
#257, 3rd floor, Sri Nanjundeshwara Complex, Nagarbhavi 8th Block, Outer Ring Road. How we work.
Engagement options
Ways to work with us.
Pick the size of commitment that fits. Every option starts with your brief and a conversation.
Option 1
The conversation on its own
A call after you send your brief. It says honestly whether you need outside help, and many fixes are ones your own team can make.
Option 2
One fix, scoped
Start with the fix that matters most, such as reply time or follow-up. The fee is in writing before anything starts.
Option 3
An ongoing programme
We run the work, report against the baseline, and you renew on the numbers. The term and the reporting are agreed in writing first.
Option 4
Guidance for your own team or agency
We plan, brief and check the work of your in-house team or current agency, instead of replacing them.
Your brief
Tell us what you need, and we will read it before we call.
Eight short steps about your business, what you want and who decides. Most questions are a tap, and you can skip any you would rather answer on the call.
FAQ
Questions owners ask before they call.
Not here? More answers, or ask on WhatsApp.
Does my site need JavaScript SEO?
Is this part of technical SEO?
Do you need access to our server logs?
Will you change our code?
Do you promise better rankings?
How much does it cost?
How long is the contract?
How soon will we see results?
Who will actually do the work?
What if we are not happy with the work?
By industry
JavaScript SEO and log file analysis, written for your industry.
Related services
Often bought with this, or instead of it.
Your next practical step
Tell us what you are trying to grow, and we will read it before we call.
Eight short steps, mostly taps. Skip anything you would rather answer on the call.