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
-
What are the best link-building strategies for 2024, considering Google's evolving algorithms?
Link-building remains a crucial part of SEO, but with Google's algorithms constantly evolving, many traditional techniques are becoming less effective. I'm interested in learning about the latest link-building strategies that are expected to be successful in 2024. What approaches or tools should we focus on to ensure our efforts align with Google's current best practices and avoid potential penalties?
Link Building | | Ibrahim-Khuzam0 -
Disavowing Links
I need some advice... I've noticed our link profile has increased with many comments links --- something I certainly have not pursued manually. I'm new to disavowing links. However, before I go ahead and disavow them, I'd like to ask how harmful these links are and would you recommend this is something I can do myself (relatively novice SEO) or if you'd recommend someone who could do this for a reasonable cost. In one instance, the link from this comment thread is with the anchor text, "porn"... Certainly not something we want to rank for, haha! I look forward to your advice
Link Building | | LukeBTDT0 -
Backlinks vs External Links vs Referral Links vs Outbound links
Hello all, I was just wondering if you could explain the difference between all the links above? I'm confused as they all seem to be the same or similar and I would just like to clearly know what distinguishes them from eachother. Thanks for your help, Jayne
Link Building | | NCOREGSEO0 -
Footer Links And Link Juice
I'm starting to learn about link juice and notice in GWMT > Traffic > Internal Links, that the list is in this order by the links counted on each page. Some are in the footer and some are in the header, with some being more important than others commercially i.e. /register /privacy /terms /search /sitemap /disclaimer /blog /register So I am wondering if I should add a 'no-follow' attribute to the footer links i.e. privacy, terms, disclaimer and leave the others as they are? Does this help retain link juice on each page where the links appear? Or am I missing the point all together? This is my website: http://goo.gl/CN0e5
Link Building | | Ubique0 -
Linking to sites that link to porn or casinos, my site getting penalized?
I have some link exchanges with some sites to get web traffic but when i ran the bad neighborhood link checker, i found that one site links to some casinos and another site has one link to a porn site. Is this getting me penalized? should i remove the links to these sites? Thanks, Ron
Link Building | | Ron100 -
Link Detox and Link Removal
I have a question about which links to remove after running a link detox from Link Research Tools. First a little back story. I had had an SEO company link building for one of the websites I own. But I have recently stopped working with them. In the last month my rankings have near dropped off the charts. I have just recently gotten access to Google webmaster tools and noticed an unnatural link warning from back in March. So yesterday I ran link detox and it reported 19 toxic links, 120 suspicious links, and 24 healthy links. It's rather obvious that I should remove all of the toxic links. They all from sites that have been deindexed by google. But my question is a about the suspicious links. What should my criteria be for removing them? Am I better off removing them all and leaving my site with only 24 healthy links or should I personally comb through them and remove only the worst of the worst so that I leave my site with a few more links? I'd really like to get the site ready to resubmit to google as soon as I can. Thoughts? yyCOf.png
Link Building | | CobraJones950 -
Text Link vs image link?
Which passes most link juice a text link or an image with the correct 'alt' attribute? Do the pass the same amount or is one more valuable than the other?
Link Building | | SamCUK0 -
Value of Link Redirect from Google News
Some sites are linking to us with the URL from Google News instead of using a direct link. For example: "http://news.google.com/news/url?sa=t&fd=R&usg=ghjgjhggjhgkjghjg&url=http://www.oursite.com/awesome-news-010123/" Does this pass the same value as a normal link? I asked the publisher to replace the link with a normal link but they pushed back saying that the news URL is better.
Link Building | | ProjectLabs0