Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
The main navigation is using JS, will this have a negative impact on SEO?
-
Hi mozzers,
We just redesigned our homepage and discovered that our main nav is using JS and when disabling JS, no main nav links was showing up. Is this still considered bad practice for SEO? https://cl.ly/14ccf2509478
thanks
-
Thanks Jose!
-
Googlebot does not render JavaScript
We hear very often about JavaScript rendering is the assumption that the crawler is responsible for the rendering. But that's not the case. The rendering is done by the indexer (from Google Caffeine).More specifically, the Web Rendering Service (WRS), which is part of Google Caffeine. And this is exactly where the second great difficulty lies in the area of JavaScript SEO.
Gary Illyes says: "Also, to clarify, WRS is a subsystem of Caffeine, just like the PageRanker (cos yes, we still use it) or the canonicalization algorithm."
The process flow between the crawler and the indexer:
HTML files are downloaded.
CSS and JavaScript data will be downloaded in parallel.
WRS (Web Rendering Service) (part of Google Caffeine) is used to run JS.
WRS renders all files.
Now Google Caffeine can index the content if necessary.
And that's when Googlebot can crawl new links.
Why is that a problem? For the crawler to be able to enter the content and follow the links, it must first pass the data to the indexer. The indexer renders the content and returns it to the crawlers. Only now can the crawler see the content and follow the links. On the next page, the game starts again. Page by page. (many processes)Unlike conventional pages, where the crawler crawls numerous pages and, after crawling, passes everything collectively to the indexer. (few processes)
This process presents another challenge to search engines.
Regards
-
The only bad SEO Practice regarding JS that I've of is trying to hide the JS files from Search Engines, apparently, Google needs to render a whole page as it indexing it; so blocking any JS (& CSS for that matter) isn't a good thing.
-
Hi There,
JS rendered UI isn't negative, it is however not a good practice also.
You can find complete information to the concept of JS rendered pages and UI on this link, https://www.portent.com/blog/seo/javascript-bad-for-seo.htm .
I hope this helps.
Regards,
Vijay
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Will using a reverse proxy give me the benefits of the main sites domain authority?
If I am running example.com and have a blog on exampleblog.com Will moving the blog to example.com/blog and using a reverse proxy give the blog the same domain authority as example.com Thanks
Intermediate & Advanced SEO | | El-Bracko0 -
Can I use duplicate content in different US cities without hurting SEO?
So, I have major concerns with this plan. My company has hundreds of facilities located all over the country. Each facility has it's own website. We have a third party company working to build a content strategy for us. What they came up with is to create a bank of content specific to each service line. If/when any facility offers that service, they then upload the content for that service line to that facility website. So in theory, you might have 10-12 websites all in different cities, with the same content for a service. They claim "Google is smart, it knows its content all from the same company, and because it's in different local markets, it will still rank." My contention is that duplicate content is duplicate content, and unless it is "localize" it, Google is going to prioritize one page of it and the rest will get very little exposure in the rankings no matter where you are. I could be wrong, but I want to be sure we aren't shooting ourselves in the foot with this strategy, because it is a major major undertaking and too important to go off in the wrong direction. SEO Experts, your help is genuinely appreciated!
Intermediate & Advanced SEO | | MJTrevens1 -
Merging Pages and SEO
Hi, We are redesigning our website the following way: Before: Page A with Content A, Page B with Content B, Page C with Content C, etc
Intermediate & Advanced SEO | | viatrading1
e.g. one page for each Customer Returns, Overstocks, Master Case, etc
Now: Page D with content A + B + C etc.
e.g. one long page containing all Product Conditions, one after the other So we are merging multiples pages into one.
What is the best way to do so, so we don't lose traffic? (or we lose the minimum possible) e.g. should we 301 Redirect A/B/C to D...?
Is it likely that we lose significant traffic with this change? Thank you,0 -
SEO Impact of High Volume Vertical and Horizontal Internal Linking
Hello Everyone - I maintain a site with over a million distinct pages of content. Each piece of content can be thought of like a node in graph database or an entity. While there is a bit of natural hierarchy, every single entity can be related to one or more other entities. The conceptual structure of the entities like so: Agency - A top level business unit ( ~100 pages/urls) Office - A lower level business unit, part of an Agency ( ~5,000 pages/urls) Person - Someone who works in one or more Offices ( ~80,000 pages/urls) Project - A thing one or more People is managing ( ~750,000 pages/urls) Vendor - A company that is working on one or more Projects ( ~250,000 pages/urls) Category - A descriptive entity, defining one or more Projects ( ~1,000 pages/urls) Each of these six entities has a unique (url) and content. For each page/url, there are internal links to each of the related entity pages. For example, if a user is looking at a Project page/url, there will be an internal link to one or more Agencies, Offices, People, Vendors, and Categories. Also, a Project will have links to similar Projects. This same theory holds true for all other entities as well. People pages link to their related Agencies, Offices, Projects, Vendors, etc, etc. If you start to do the math, there are tons of internal links leading to pages with tons of internal links leading to pages with tons of internal links. While our users enjoy the ability to navigate this world according to these relationships, I am curious if we should force a more strict hierarchy for SEO purposes. Essentially, does it make sense to "nofollow" all of the horizontal internal links for a given entity page/url? For search engine indexing purposes, we have legit sitemaps that give a simple vertical hierarchy...but I am curious if all of this internal linking should be hidden via nofollow...? Thanks in advance!
Intermediate & Advanced SEO | | jhariani2 -
Domain Forwarding - SEO Impacts?
I have a site that has been active for years - thinkbiglearnsmart.com. Awhile ago I had purchased about 50 domain names that were relevant to my company. I still have those urls and would like to use them to point to different pages on my site - just because they have good key words in the URLs. For example - one is dreamweavertrainingclassesonlinelive.com. Currently they are all redirecting to my homepage. A. is that hurting me? B. I would like to redirect to the more relevant page. ie the page dedicated to Dreamweaver training (http://thinkbiglearnsmart.com/dreamweaver-creative-cloud-training-course/ ) Will this hurt my Dreamweaver keyword for example because there is already a 301 redirect on that page from a very old Dreamweaver link which was something like thinkbiglearnsmart.com/dreamweaver C. On my hosting account where I can select where the URL forwards to - it has an option for "Location forwarding" and "Frame forwarding" - currently they are set to Frame forwarding - which one is best? Any help is much appreciated!!! Thank you!
Intermediate & Advanced SEO | | webbmason0 -
Meta Keywords: Should we use them or not?
I am working through our site and see that meta keywords are being used heavily and unnecessarily. Each of our info pages will have 2 or 3 keyword phrases built into them. Should we just duplicate the keyword phrases into the meta keyword field, should put in additional keywords beyond or not use it at all? Thoughts and opinions appreciated
Intermediate & Advanced SEO | | Towelsrus1 -
Domain expiration and seo
My domain name is free with my service with yahoo but it expires every year and gets extended automatically as I continue service, how does this impact my seo efforts? I've heard that the search engines prefer sites to expire in 3 years or more? Is this a fact?
Intermediate & Advanced SEO | | bronxpad0 -
Are there any negative effects to using a 301 redirect from a page to another internal page?
For example, from http://www.dog.com/toys to http://www.dog.com/chew-toys. In my situation, the main purpose of the 301 redirect is to replace the page with a new internal page that has a better optimized URL. This will be executed across multiple pages (about 20). None of these pages hold any search rankings but do carry a decent amount of page authority.
Intermediate & Advanced SEO | | Visually0