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.
Javascript, PhP and SEO Impact?
-
What are the Pro's and Con's of using Java Script and PHP in a site when factoring in SEO?
-
Alan's answer is spot on.
Avoid javaScript or carefully follow best-practices so Google can crawl all content without reading javaScript. Alan is exactly right when he said: never count on Google crawling through your JavaScript to find content, but also never count on being able to hide anything from Google via JavaScript.
Whether you use PHP or not is not directly relevant. PHP is executed server-side, so Google never sees your PHP code and doesn't care. What matters is whether your programmer writes PHP code that will generate search friendly HTML code, url structure, etc.
-
JavaScript is one of several technologies that offers severe limitations in search engines and their ability to properly see content, then just as important but often overlooked, properly and cleanly evaluate that content from an SEO perspective.
Specific considerations:
- Google does a "fair" job at discovering content passed through JavaScript (either on-page or at the code level)
- A "fair" job means it's hit and miss as to whether their system can actually find that content
- Whatever content the Google system CAN find via JavaScript is NOT necessarily able to be used to properly evaluate content intent, focus or relationship to other content
So - the best practices recommendation is if you want/need content to be found and properly evaluated by Google (or Bing) do NOT pass it through JavaScript.
And also, if you want to HIDE content from Google, don't assume you can successfully do so via JavaScript either.
As for PHP, its the most widely adopted and utilized web programming language out there. The language by itself is essentially SEO neutral. It's all in how a programmer utilized PHP that matters. In the hands of a programmer that either truly understands SEO or collaborates closely with an SEO expert (who also understands the limitations/pitfalls that can arise with "bad" (SEO-unfriendly) PHP coding, it's a great language.
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
-
Any risks involved in removing a sub-domain from search index or completely taking down? Ranking impact?
Hi all, One of our sub-domains has thousands of indexed pages but traffic is very less and irrelevant. There are links between this sub-domain to other sub domains of ours. We are planning to take this subdomain completely. What happens if so? Google responds for this with a ranking change? Thanks
Web Design | | vtmoz0 -
Does the blog widget with latest blog-posts at homepage helps in SEO?
Hi all, We are planning to add a widget at our website homepage which displays recent blog-posts with dates. Google favours new and latest content. So will these consistent new posts help in improving website ranking? Thanks
Web Design | | vtmoz0 -
How is Single Page Application (SPA) bad for SEO
Hi guys. I am quite inspired of SPA technique. It's really amazing when all your interaction with the site is going on the fly and you don't see any page reloads. I've started implementing the site with this instruction and already found nice guys to make the design. The only downside of the using SPA which I can see **is the **SEO part. That's because the URL does not really change and different pages don't have their unique URL addresses.
Web Design | | Billy_gym
Actually they have, but it looks like: yoursite.com/#/products yoursite.com/#/prices yoursite.com/#/contact So all of them goes after # and being just anchors. For Google this mean all of these pages is just yoursite.com/ My question is what is really proven method to implement the URL structure in Single Page Application, so all the pages indexed by Google correctly (sorry I don't mention the other search engines because of market share). The other question, of course, is examples. It will be great to see real life site examples, better authority sites, which use SPA technique and well indexed by search engines.1 -
What seo benefit does setting up a photo gallery where each photo is a separate web page?
what seo benefit does setting up a photo gallery where each photo is a separate web page? My old SEO guy set up my photo gallery like that claiming that because each photo was a separate page, it added a big seo benefit and i never understood what he was talking about. Maybe alt text on the photo with key phrases in it pointing to my other pages to give my site a theme for google? I'm not really sure. He has since moved away and i am considering redoing the photo gallery to multiple images on one page to be more user friendly to my users. This photo gallery is 3 years old and the photos might have some page rank to them helping my site so i don't want to remove this gallery if there really is a benefit to it and it will hurt my site. I once removed four static page rank 3 pages from my site that weren't used for my site anymore and my rankings dropped 5 positions. Thoughts anyone? Thanks! Ron
Web Design | | Ron100 -
Do pull quotes affect SEO positively or negatively?
I like the design element of a pull quote to ad interest and highlight an important point. If I use an exact quote from the page in a pull quote on that page, does that negatively affect SEO as duplicate content? Are there formatting or tagging methods that could help pull quotes to boost SEO? For clarity, by "pull quote" I mean a stylized bit of text that floats on a page in such a way that the body text wraps around it. It is actual text (not text embedded in a graphic) but it behaves like an image with text wrapping around it. Here's an example (in red on the right side): http://www.21ct.com/resources/news-room/21ct-announces-its-latest-us-patent-for-advancing-big-data-security/
Web Design | | kyle21ct0 -
White Text / Black Background & SEO Impact
Does anyone know of any testing / studies with evidence that Google prefers dark text on a light background vs. light text on a dark background? I have a website that currently has light text on a black background, and really like the way it looks, but am concerned that the style may be hurting SEO. Moreover, redesigning something inverse with the same quality would be a large project and fairly costly, so I'd like to make sure the benefit will really be worth the cost before moving forward.
Web Design | | Bromtec0 -
SEO Issues From Image Hotlinking?
I have a client who is hotlinking their images from one of their domains. I'm assuming the images were originally stored on the first domain (let's call it SiteA.com) and when they were putting together SiteB.com, they decided to just link to the images directly on SiteA.com instead of moving the images to Site B. Essentially hotlinking. Site A is not using the images in any way and in essence is just a gateway for their other sites and in this case a storage for their images. It doesn't use those images at all, so it really doesn't get any benefits of the images being referenced since I read that Google sometimes counts that hotlinking as a "vote" for the original image. But again, since ite A doesn't use the images that are being hotlinked at all, there's no benefit for Site A. My concern is that it's affecting their SEO for Site B because it makes it look like Site B is simply scraping data by hotlinking those images from Site A. Their programmer suggested creating a virtual directory so that it "looked" like it was coming from Site B. My guess is that Google can see this, so then not only will it look like Site B is scaping/hotlinking images, but also trying to hide it which may send up red flags to Google. My suggesstion to them was to just upload the images correctly into their own images directory on Site B. They own the images, so there's not any copyright issue, but that if they want proper SEO credit for that content, it all needs to be housed on the correct server and not hotlinked. Am I correct in this or will the virtual directory serve just as well?
Web Design | | GeorgiaSEOServices1 -
Combining web pages and it's affects on SEO?
We are looking into amending a website we are working on to try and combine 2 or 3 current pages onto one page. This site is similar to an estate agents site and currently has images, map, floor plan sub pages etc. Can anyone tell me, if we were to combine these pages and include the above details on one page, how that would affect the current search engine rankings?
Web Design | | SoundinTheory0
