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.
Does google scrape links from PDF files? do these links pass link juice?
-
Title is pretty much the whole question.
-
I made a test and it seems that yes, the links from pdf count for ranking.
The test is on my Romanian blog http://seogan.ro/link-building-pdf-urile-o-sursa-de-linkuri-test
You can find an English translation here: http://www.seogan.com/pdf-link-building
Hope it helps.
-
Yes it does according to Google tech spec http://code.google.com/apis/searchappliance/documentation/50/admin_crawl/Introduction.html
which specifically states if follows html links in pdf 'It follows HTML links in PDF files, Word documents, and Shockwave documents'. Google's own api docs carry more weight than a comment in a forum_._ If they are licencing this out as an application it would suggest that the same technology is available in the main engine as does Dunamis's comment about a listing in a pdf document being found in search results.
You can test for youself by publishing a pdf with a link to a info page that does not show up in any other links. Include the pdf in your sitemap but not the test page and check if it shows in googles index site:yoursite.com the next time it crawls.
This also gives some insight in an interview with Matt Cutts - http://www.stonetemple.com/articles/interview-matt-cutts-012510.shtml
Eric Enge: What about PDF files?
Matt Cutts: We absolutely do process PDF files. I am not going to talk about whether links in PDF files pass PageRank. But, a good way to think about PDFs is that they are kind of like Flash in that they aren't a file format that's inherent and native to the web, but they can be very useful. In the same way that we try to find useful content within a Flash file, we try to find the useful content within a PDF file. At the same time, users don't always like being sent to a PDF. If you can make your content in a Web-Native format, such as pure HTML, that's often a little more useful to users than just a pure PDF file.
-
Google definitely does index the contents of pdf files. I found this out the hard way as I had a real estate pdf on my site that I wanted to have listed in the index, but I didn't know that the contents would be crawled. The pdf contained some listings that I was not legally allowed to advertise on my site. (It was legal for me to give someone a report with the listings in it though).
When another realtor was searching for their own listing, my pdf came up. I got in trouble. I'm ok now though.
-
Have a look at this article http://searchenginewatch.com/article/2067225/Google-Does-PDF-Other-Changes it explains some of the doc library search for pdf files and Google's statement here http://googleblog.blogspot.com/2008/10/picture-of-thousand-words.html.
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
-
Value of Links? What is each link worth?
Morning Everyone, I just had this thought and wondered what everyone's opinions were in terms of link value in monetary terms. We'll assume for the purposes of this that the links come from contextually relevant sites and that the sites in question have got the Moz DA from being high quality and have a good quality incoming link profile. Its a bit of a theoretical question, but i guess imagine if the only way you could get links was to pay for them, what would they be worth to you. This is link value for SEO purposes, they will have in addition value from traffic from good sites, that no doubt varies wildly depending on topic. I assume everyone also agrees on: The first link from a domain is the most valuable High DA sites are worth more than low ones. So could anyone who has an opinion on the link value suggest a monetary value for links. Its really just using a monetary amount to see how best to target my time. Here is my example of what might be expected, but I am hoping people with more knowledge will perhaps correct it. DA Rating First Link 2nd-5th Link 5th-10th Link 10Plus Links 5 $5 $2 $1 $0 15 $7 $3 $2 $1 25 $25 $10 $5 $2 35 $45 $20 $7 $3 45 $65 $30 $11 $4 55 $95 $45 $19 $5 65 $200 $100 $45 $6 75 $350 $120 $65 $9 85 $700 $240 $95 $15 95 $1100 $450 $200 $30
Link Building | | wellandpower1 -
Xyz links
I have a lot of backlinks ending with .xyz, around 20%, and they look very suspicious. Should I disavow these? Here are a few: yourrelicsbargains.xyz fantasticsiteinfo.xyz yourvintagelifestyle.xyz usefuldiscount4u.xyz bestdealsaction.xyz bestmemorabilialifestyle.xyz 59177.net lovecollectorsbargains.xyz
Link Building | | moon-boots0 -
Nasty links
Hi My first q on here (hoorah!), and it's about links (boo!). I've got what appears to be a handful (but worryingly, increasing in number) of links pointing to my site like this: http://condos.mrgulffront.com/florida-condos-for-sale/320-scenic-gulf-drive-miramar-beach-fl-32550-mls-567591/ I've made contact with the sites concerned, and had only one positive response who flatly denied all knowledge of it. The issue (as far as I can see) is that as in the above example the links (on the bottom right in the grey box) are forever changing so not always visible. Can anyone offer any guidance as to these kinds of nasty links.... I'm right at the v beginning on this "path of seo understanding" so please don't assume prior knowledge! Thanks in advance.... tom
Link Building | | T-J-I0 -
Googles stance on Back Links via a Badge/Form
Hey guys, Does anyone know what Google's stance is on backlinks that come via a form, WordPress theme or badge. For example if I offer website security and provide badges for websites that are malware clean (with a back link to my website) and 100 websites sign up to my website will this be deemed as bad practice in Google's eyes? Also if I create a free WordPress theme with a backlink to myself? The second question sounds like I'm providing content for a link which seems okay but the first one can go either way. Thanks
Link Building | | conversiontactics0 -
Are links with space considered to be the same as links with %20?
I wonder if Google would consider those three links to be the same? http://www.example.com/test page.html http://www.example.com/test page.html http://www.example.com/test+page.html
Link Building | | lucek0 -
Does the ratio of external nofollow links to external "do follow" links matter in terms of SERPs ranking?
My site has an external link nofollow:dofollow ratio of approximately 1:1 That is, there are about as many nofollow external links as "do follow" external links. I have an impression that the ratio of no-follow to "do follow" links is a factor in the way that our website shows up in SERPs. I have the impression from reading a variety of sources, and from looking at Seomoz, that calculate "trust" factors as if they mattered (in SERPs), that seem to value a relatively low nofollow:dofollow ratio. Am I correct about that? Thanks,
Link Building | | tcolling
Tim PS - I don't know whether or not this matters, but our website is at: www.trustworthycare.com - Tim0 -
Will a mega menu on all pages dilute the link juice?
On our web site (http://www.betxpert.com) we have a mega menu with quite a lot of links in it. I am getting warnings in SEOmoz saying we have far to many links in our pages. But a lot of pages have large menus with a lot of links - are all pages punished for this then? My primary question is: Since the menu is on all pages, the pages linked in the menu will have a link in from all of our pages (200K+ pages) and a lot of these do not have a good ranking. So what I want to know is if the pages linked in the menu will have lower ranking because of the many links in - or is this a good thing? Should I consider setting "nofollow" for som of the links on other pages than the homepage (since this is the page with the best rank)?
Link Building | | rasmusbang0 -
Porn link ...
I just ran https://www.majesticseo.com report for back links and showed me that I have one link at porn site ... not sure if it will be appropriate to post it here. The link was discovered on 03.05.11 and when I visited today link is not there... I dont know who put that link there. Can I get penalty for that from google? Can it be a mistake?
Link Building | | DiamondJewelryEmpire1