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
-
How long does it take Google to remove links after using disavow tool?
Hi guys, So we're currently in the process of removing some of the less useful and more suspect links from our profile, and used the Google disavow tool to do so. We uploaded the .txt file to the search console on 7th July this year, 2 months ago now, and according to our most recent site crawl, the suspect links are still showing up on our link profile. Do we have any idea how long this is roughly supposed to take? The ideas I've found online are conflicting - anything from 3-4 weeks to 6-9 months. Which is it? Is there any way of fast-tracking this process? Thanks!
Link Building | | rawdog0 -
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 -
Internal Linking - Post links vs Side Bar Links behaving differently
Hi, I have a question regarding the internal linking behavior. My website is www.hindimeaning.com which is approx 3 years old. I have approx 450 posts. Now i have a widget on right sidebar "Popular posts". A widget below my posts "Related Posts". And a simple html CSS menu above the posts (I removed menu around 6 month before so currently it will not show.) I crawled my site with moz crawler (same are the result from google crawler as well) and it shows menus links as internal links. While sidebar widget "Popular posts" and "Related Posts" are not showing as internal links. If we talk theoretically what i learn till now is "every link on a page behaves as internal link". Then why the widget links are not showing as internal links. Thanks, Mahesh Kumar
Link Building | | chaudhary04890 -
URL parameters affecting link juice
I have a couple of quirks in my online shop that I'm ironing out. One of them is adding some URL parameters to product links.ie: website.com/product.html?&cat=0&featured=Y If someone links to this URL, will I get the link juice as if it was website.com/product.html ? I have URL parameters in Webmaster Tools and robots.txt set up to ignore them so they're not in the Google index, but I have found a few websites that have linked to us using these longer URL's and I'm wondering whether to write to them and ask them if they mind changing them or not.
Link Building | | sparrowdog0 -
Do footer links pass less link juice?
One of my best inbound links for PA and DA happens to be a footer link, curious if it's less valuable or has any value at all.
Link Building | | Theskimonster0 -
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 -
Why is Google not following a 301 redirect on the robots.txt file?
Hi Guys, I recently posted a question on the Google Webmasters Forum http://www.google.com/support/forum/p/Webmasters/thread?tid=683e71557db7fd54&hl=en&fid=683e71557db7fd540004a4b4add8cbb6 and didn't get a satisfactory feedback so I thought I will put this to the SEO gurus on here. Perhaps one of you guys might good buddies with Matt and might be able to ask him directly. I actually posted on Matt's blog but he hasn't got back to me. Basically we did a URL restructure for client and set up 301 redirects and saw a huge drop in rankings over time. The 301 redirects seem to work fine and have been tested by many many people. We suspected that google might be ignoring the 301 redirects or devaluing them and so I reviewed the server log to see what is happening when the googlebot crawls the site and it showed that on many occasions the googlebot did not reload the page after hitting a 301 redirect. Sure.. you might say it probably queues it or Google might just be checking that the 301 redirect is still in place but why check so often (with a few hours to a day on the same URL) it even skips a 301 redirect on the robots.txt file i.e. from http://clientsite.com/robots.txt to http://www.clientsite.com/robots.txt. from non-www to www version. I don't think it is easy to dismiss the skipping of the robots.txt file - this 301 redirect should be loaded immediately to use the instructions the gooblebot requires to crawl the page. Any help will be appreciated. I can sent the server log to anyone personally but I am reluctant to post it on here. Regards, Zan
Link Building | | FRL0