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.
Embedding PDF previews and maintaining crawlability/link-equity.
-
One site that I'm working on has previously had a great deal of success from the pdf preview content on the site. The pdf previews are quite substantial and rank for many many long-tail terms that drive a reasonable amount of traffic back to the site to purchase the full version of the product.
As part of a site redesign, the way the pdf previews are embedded/presented on the page is changing slightly:
The proposed modal pop-up on the new site the code looks like thie:
<object data="my-pdf-preview.pdf" type="application/pdf" style="width:100%; min-height:600px; max-height:100%;max-height:100%;"><embed src="my-pdf-preview.pdf" type="application/pdf"></object>
Where as the old code looked like this:
<object data="mt-pdf-previewpreview.pdf#view=FitH,50&scrollbar=1&toolbar=0&statusbar=0&messages=0&navpanes=0" <br="">type='application/pdf'
width='100%'
height='600'>It appears your Web browser is not configured to display PDF files.
No worries, you can download the PDF file here.</object>
Note: how previously the code contained a plain, standard link to the pdf document.
My worry is that without this link, search engines won't a) be able to discover/crawl the pdf content or b) pass any link-equity to these pdfs.
Does anyone have any experience/recommendations about this? I'd like to have some information before I request that they add a plain link to the pdf previews back onto the on-page content.
-
That's the route I'd push for as well I think.
Agreed on experimentation. Please report back if you get a chance to test this. Perhaps choose a small number of PDFs on this site redesign and leave the link off of them?
-
Thanks Kane - I've managed to make the case for a real-simple "download preview pdf" link so at least I feel comfortable that they won't lose too much of this "hidden" traffic.
It would still be nice to understand how <embed> is handled and whether any link-equity passes though the embed. Tight deadlines on projects don't mean you have time to experiment.
-
I haven't seen any studies with <embed> the way I have with <iframe>. <embed> is also used for video and flash, but neither would be indexed the same way as PDF so hard to compare. The embed tag is pretty standardized, so I really doubt they wouldn't crawl this similarly.</p> <p>IIRC in the ugly era of flash, it was proper to have a <noscript> {crawlable content here} </noscript> section after the <embed>, so that's one comparable situation, but that's due to the flash itself not being crawled well.</p> <p>If it's not a hassle, I would add the text link to the PDF that says "download full PDF" or similar. If it is a hassle and takes longer than a couple hours, then it's a harder call.</p> <p>Similar thread that could be helpful:</p> <ul> <li><a href="http://stackoverflow.com/questions/3686331/does-google-index-html-content-supplied-by-the-object-tag">http://stackoverflow.com/questions/3686331/does-google-index-html-content-supplied-by-the-object-tag</a></li> </ul></iframe>
-
Search engines will still be able to crawl the PDF. They crawl images, don't they?
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
-
Does Navigation Bar have an effect on the link juice and the number of internal links?
Hi Moz community, I am getting the "Avoid Too Many Internal Links" error from Moz for most of my pages and Google declared the max number as 100 internal links. However, most of my pages can't have internal links less than 100, since it is a commercial website and there are many categories that I have to show to my visitors by using the drop down navigation bar. Without counting the links in the navigation bar, the number of internal links is below 100. I am wondering if the navigation bar links affect the link juice and counted as internal links by Google. The Same question also applies to the links in the footer. Additionally, how about the products? I have hundreds of products in the category pages and even though I use pagination I still have many links in the category pages (probably more than 100 without even counting the navigation bar links). Does Google count the product links as internal links and how about the effect on the link juice? Here is the website if you want to take a look: http://www.goldstore.com.tr Thank you for your answers.
Intermediate & Advanced SEO | | onurcan-ikiz0 -
Wikipedia links - any value?
Hello everyone. We recently posted some of our research to Wikipedia as references in the "External Links" section. Our research is rigorous and has been referenced by a number of universities and libraries (an example: https://www.harborcompliance.com/information/company-suffixes.php). Anyway, I'm wondering if these Wikipedia links have any value beyond of course adding to the Wiki page's information. Thanks!
Intermediate & Advanced SEO | | Harbor_Compliance0 -
Site wide footer links vs. single link for websites we design
I’ve been running a web design business for the past 5 years, 90% or more of the websites we build have a “web design by” link in the footer which links back to us using just our brand name or the full “web design by brand name” anchor text. I’m fully aware that site-wide footer links arent doing me much good in terms of SEO, but what Im curious to know is could they be hurting me? More specifically I’m wondering if I should do anything about the existing links or change my ways for all new projects, currently we’re still rolling them out with the site-wide footer links. I know that all other things being equal (1 link from 10 domains > 10 links from 1 domain) but is (1 link from 10 domains > 100 links from 10 domains)? I’ve got a lot of branded anchor text, which balances out my exact match and partial match keyword anchors from other link building nicely. Another thing to consider is that we host many of our clients which means there are quite a few on the same server with a shared IP. Should I? 1.) Go back into as many of the sites as I can and remove the link from all pages except the home page or a decent PA sub page- keeping a single link from the domain. 2.) Leave all the old stuff alone but start using the single link method on new sites. 3.) Scratch the site credit and just insert an exact-match anchor link in the body of the home page and hide with with CSS like my top competitor seems to be doing quite successfully. (kidding of course.... but my competitor really is doing this.)
Intermediate & Advanced SEO | | nbeske0 -
One Way Links vs Two Way Links
Hi, Was speaking to a client today and got asked how damaging two way links are. i.e. domaina.com links to domainb.com and domainb.com links back to domaina.com. I need a nice simple layman's explanation of if/how damaging they are compared to one way links. And please don't answer with you lose link juice as I have a job explaining link juice.... I am explaining things to a non techie! Thank you!!
Intermediate & Advanced SEO | | JohnW-UK0 -
Where to link to HTML Sitemap?
After searching this morning and finding unclear answers I decided to ask my SEOmoz friends a few questions. Should you have an HTML sitemap? If so, where should you link to the HTML sitemap from? Should you use a noindex, follow tag? Thank you
Intermediate & Advanced SEO | | cprodigy290 -
Max # of Products / Links per Page on E-Commerce Site
We are getting ready to re-launch our e-commerce site and are trying to decide how many products to list per category page. Some of of our category pages have upwards of 100 products. While I'd love to list ALL the products on the root category page (to reduce hassle for customer, to index more products on a higher PR page), I'm a little worried about having it be too long, and containing too many on-page links. Would love some guidance on: Maximum number of internal links on a page If Google frowns on really long category pages Anything else I should be considering when making this decision Thanks for your input!
Intermediate & Advanced SEO | | AndrewY2 -
How to ping the links
When i do link building for my website, how can i let the search engines know about that. is there any way of pinging?
Intermediate & Advanced SEO | | raybiswa0 -
Posing QU's on Google Variables "aclk", "gclid" "cd", "/aclk" "/search", "/url" etc
I've been doing a bit of stats research prompted by read the recent ranking blog http://www.seomoz.org/blog/gettings-rankings-into-ga-using-custom-variables There are a few things that have come up in my research that I'd like to clear up. The below analysis has been done on my "conversions". 1/. What does "/aclk" mean in the Referrer URL? I have noticed a strong correlation between this and "gclid" in the landing page variable. Does it mean "ad click" ?? Although they seem to "closely" correlate they don't exactly, so when I have /aclk in the referrer Url MOSTLY I have gclid in the landing page URL. BUT not always, and the same applies vice versa. It's pretty vital that I know what is the best way to monitor adwords PPC, so what is the best variable to go on? - Currently I am using "gclid", but I have about 25% extra referral URL's with /aclk in that dont have "gclid" in - so am I underestimating my number of PPC conversions? 2/. The use of the variable "cd" is great, but it is not always present. I have noticed that 99% of my google "Referrer URL's" either start with:
Intermediate & Advanced SEO | | James77
/aclk - No cd value
/search - No cd value
/url - Always contains the cd variable. What do I make of this?? Thanks for the help in advance!0