There’s so much that may go unsuitable on a web site, and each web site goes to have some points to repair.
We checked out 1,002,165 domains to search out the most typical technical Search engine marketing points. Maintain studying to see what we discovered.
These are the problems flagged probably the most throughout the 1 million+ domains. The quantity is the proportion of domains the place the problems had been discovered on not less than one among their pages.

These are the most typical points, however each web site is completely different. You need to use Ahrefs’ Web site Audit to get reviews in regards to the points by yourself web site. That is free for verified websites with an Ahrefs Webmaster Instruments (AWT) account.
I made a sheet with the remainder of the problems if you happen to simply need the information. In order for you my commentary on the highest points and prioritization for fixing them, maintain studying.
3XX redirect – 95.2% of websites
Most websites use redirects, and it’s not normally something to fret about. Websites, and the online on the whole, are all the time altering. We ran a research that discovered that ~two-thirds of hyperlinks to pages on the internet disappeared within the nine-year interval we checked out.
I’d be involved if there are redirect loops, the place a web page will get redirected infinitely, or when there’s a lengthy chain of redirects. Google will observe as much as 5 redirect hops in a single session. And when it resumes crawling within the subsequent session, it’s going to observe as much as 5 extra. Something over 10 hops gained’t consolidate indicators (like hyperlinks) correctly to the ultimate URL.
Yow will discover each of those within the “Points” tab within the Redirects report in Web site Audit.

HTTP to HTTPS redirect – 88% of websites
In the event you see this, nice! You need your web site to be on HTTPS.
We have now this as a notification in Web site Audit, and also you shouldn’t be involved until the redirect goes the opposite manner—from HTTPS to HTTP. Yow will discover the HTTPS to HTTP redirects within the “Points” tab of the Inner pages report in Web site Audit:

A shocking variety of websites, >6%, are redirecting the unsuitable manner.
One of many different points that may occur together with HTTP to HTTPS redirects is “combined content material” points. Yow will discover this within the “Points” tab of the Inner pages report in Web site Audit:

Some folks spend lots of time updating the entire references to different file sorts to unravel these. There’s a greater manner.
In the event you set a Content material Safety Coverage (CSP) for upgrade-insecure-requests, it’s going to clear up all your “combined content material” points. It solely takes a few minutes to set a rule in your .htaccess or server config for this.
In .htaccess, you merely add:
<ifModule mod_headers.c>
Header all the time set Content material-Safety-Coverage "upgrade-insecure-requests;"
</IfModule>
Lacking alt attributes – 80.4% of websites
Lacking alt attributes is an accessibility concern, which can flip right into a authorized concern. Most huge corporations have been sued for ADA compliance points on their web sites, and a few get sued a number of occasions a 12 months. I’d repair this for the primary content material photographs, however not for issues like placeholder or ornamental photographs the place you’ll be able to depart the alt attributes clean.
For internet search, the textual content in alt attributes counts as textual content on the web page, however that’s actually the one function it performs. Its significance is usually overstated for Search engine marketing, for my part. Nevertheless, it does assist with picture search and picture rankings.
Yow will discover lacking alt attributes within the Photographs report:

Meta description tag lacking or empty – 72.9% of websites
I don’t fear a lot about lacking meta descriptions. They don’t impression rankings. Google will write one for you if you happen to don’t have one or typically rewrite yours even if you happen to do have one. After we ran a research, we discovered that Google rewrites meta descriptions 62.78% of the time.
Nonetheless, there are occasions after I give attention to them. Attempt to add meta descriptions when making a web page. If it’s lacking on a web page you actually care about or that will get lots of site visitors, you could wish to add it. You might also wish to add one if in case you have a singular promoting level or give you assume could be compelling for customers.
You’ll discover the “lacking meta description” concern within the Content material report in Web site Audit.

In the event you click on into the difficulty, you’ll be able to kind the pages by “Natural site visitors” within the report.

Sluggish web page – 72.3% of websites
We normally deem a web page as gradual through the use of our personal subjective measure of pace. To get a greater concept, I like to recommend enabling Core Net Vitals in your mission’s crawl settings.

That is going to attach you to Google PageSpeed Insights and can pull the Core Net Vitals metrics into Web site Audit. These are the metrics Google really makes use of in its rankings and are pulled from the identical information supply.
Another auditors will pull lab take a look at variations of those metrics. But when the instrument isn’t connecting to PageSpeed Insights, you’re not getting the precise Core Net Vitals information, which comes from real-world customers of Google Chrome. In the event that they’re exhibiting you Complete Blocking Time (TBT) from Lighthouse as a substitute of First Enter Delay (FID) or Interplay to Subsequent Paint (INP), that’s a straightforward strategy to inform the distinction.
We provide the Lighthouse-based take a look at scores, in addition to the Core Net Vitals take a look at scores. Take a look at the Efficiency report in Web site Audit for these points and extra.

Web page and SERP titles don’t match – 68.5% of websites
It’s possible you’ll wish to enhance the web page title if it’s not related to the web page since it’s a rating issue. You might also wish to enhance titles for pages getting lots of search site visitors the place you assume you are able to do a greater job than Google.
Yow will discover the “Web page and SERP titles don’t match” concern within the “Points” tab of the Content material report in Web site Audit.

In the event you click on into the difficulty, you’ll be able to kind the pages by “Natural site visitors” within the report.

I made a script some time again that you should utilize to see which of your titles Google modified probably the most from their authentic textual content. It’s very easy to make use of. Right here’s the script and a video of tips on how to use it.
Web page has just one dofollow incoming inner hyperlink – 66.2% of websites
A minimum of it’s not a totally orphaned web page. But when it’s a web page that you simply wish to rank, you could wish to add some extra inner hyperlinks.
The simplest strategy to see inner hyperlink alternatives is with our instrument in Web site Audit. We have a look at what your pages are rating for and counsel hyperlinks from different pages in your web site that speak about these issues.

Title too lengthy – 63.2% of websites
We estimate if the title tag is being minimize off on the SERPs, however you could wish to manually examine if it’s minimize off on desktop or cellular searches. Cellular sometimes permits longer titles than desktop. We plan to truly examine the SERPs for you sooner or later. However for now, you could wish to examine pages which can be necessary to you.
If the title is minimize off, you could wish to regulate your tag to suit. Nevertheless, the rating relies on the entire title tag, not simply what’s proven on the SERPs, so you could wish to depart it alone.
Web page has hyperlinks to redirect – 62.7% of websites
So long as the redirects resolve to a different web page and there are fewer than 10 hops (like I discussed earlier), that is tremendous. I normally put points like this within the backlog for somebody to wash up after they get an opportunity, however I don’t take into account it an enormous concern and don’t prioritize it.
It’s possible you’ll wish to examine if any of the chains are too lengthy. Search for this within the “Points” tab within the Redirects report.

H1 tag lacking or empty – 59.5% of websites
I take into account H1 tags lacking a minor concern, particularly if the textual content is wrapped in an H2 tag as a substitute. It’s normally a straightforward repair to vary them, so I’ll largely do it—however I don’t anticipate a lot impression.
Yow will discover the difficulty within the Content material report in Web site Audit.

Meta description too quick – 59.2% of websites
You already noticed that I typically don’t fear about lacking meta descriptions, so why would I fear in the event that they’re too quick? But when it’s a web page you care about and you’ve got one thing so as to add to the outline, go for it.
Like I discussed earlier than, I feel meta descriptions are place so as to add distinctive promoting factors or affords if in case you have them.
Yow will discover the difficulty within the Content material report in Web site Audit.

Open Graph tags incomplete – 56% of websites
Not each web page wants Open Graph meta tags, so I’m not shocked by how usually these are lacking. They’re actually solely wanted for pages that you could be share on social media.
I sometimes don’t take into account these tags to be associated to Search engine marketing. The one time they could be used for one thing Search engine marketing-related is after they’re utilized in Google Uncover as a substitute of your title or characteristic picture.
The one profit they’ll have for Search engine marketing is that you could be get a bit extra publicity on social media, which probably results in some extra hyperlinks. They aren’t used instantly in rankings.
Meta description too lengthy – 54.5% of websites
In the event you haven’t already realized it, I don’t focus a lot on meta descriptions. If it’s a web page that’s necessary to you and you may write a greater meta description that matches, go for it.
I’ve simply seen too many audits recommending that somebody ought to rewrite 800 meta descriptions, and I cry for that poor soul.
Yow will discover the difficulty within the Content material report in Web site Audit.

A number of H1 tags – 51.3% of websites
A number of H1 tags are allowed in fashionable HTML, and Google has stated this isn’t an issue. HTML5 has supported a number of H1s because it launched in 2014.
I’d simply examine to verify the entire headings you’ve gotten as H1s are related to the web page.
Yow will discover the difficulty within the Content material report in Web site Audit.

Meta description tag lacking or empty (non-indexable web page) – 50.8% of websites
We cut up lots of completely different points primarily based on if a web page is indexable or not indexable. That is meant to save lots of you time by not specializing in points on pages that aren’t listed anyway.
For example, you wouldn’t fear a couple of meta description on a web page that may’t be listed as a result of that meta description can’t present up in a search end result. Don’t spend time right here.
Tip
As soon as once more, right here’s a sheet with the remainder of the problems. Maintain studying to be taught extra about prioritization of points, which is what I take into account the toughest factor for SEOs to get proper.
What you prioritize to repair shall be decided by the size of the problems and which of them you assume can have probably the most impression to your web site.
We have now a default prioritization for points in Web site Audit, however you’ll be able to edit the precedence by going to “Problem settings” on the prime proper of the Web site Audit dashboard. I’ll warn you now that altering the difficulty prioritization will impression your Well being Rating!

In reality, you’ll be able to absolutely customise the problems. You may edit present points, create new points, change the precedence of points, or flip off ones that don’t matter to you.
Prioritizing fixes and even figuring out if you happen to ought to repair some points is among the hardest components of technical Search engine marketing. It will get much more difficult when you need to weigh fixing technical points together with issues like creating content material or hyperlinks.
Generally, one of the best plan of action is to do nothing as a result of the prices outweigh the advantages.
I don’t wish to make assumptions about your websites on this research, however I’ve listed among the tasks I might prioritize in our newbie’s information to technical Search engine marketing. We even have guides on doing a technical audit and fixing technical Search engine marketing points to offer you extra concepts.
The best way I normally prioritize points is by the impression I imagine they are going to have and the hassle that I (or my dev group) imagine it’s going to take to repair them. This makes for a pleasant visible for displays and helps you see which fixes can have probably the most impression with the least effort.

Remaining ideas
An enormous thanks and shoutout to my colleague, Oleksiy Golvoko, for serving to me collect this information! It was attention-grabbing to see the problems at a scale that has by no means been executed earlier than.
In case you missed the opposite two hyperlinks to it, here’s a sheet with the remainder of the problems.
If in case you have any questions, message me on Twitter.