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 -
Should I disavow these links?
Hi all, I have a ski website that I am currently performing a toxic backlink audit on. I have noted that a lot of the links being flagged as toxic/spammy by the tool I am using seem to be the same/similar sites with different URLs. The sites are vaguely related to skiing (relating to helicopter travel options for travelling to ski resorts) but it is concerning me that there are so many of them and they are being flagged as so toxic.
Link Building | | SolveWebMedia
Do you think it is worth disavowing these? Or contacting the owner to ask them to remove the link? I have included an example of some of the links below. https://www.cannes-helicopters.co.uk/index.php?menuopen=21&showcontent=5
https://nice-helicopter.co.uk/index.php?menuopen=21&showcontent=5
https://monaco-helicopter.co.uk/index.php?menuopen=21&showcontent=5 Slightly different site but same favicon icon:
https://monaco-helicopter.co.uk/index.php?menuopen=21&showcontent=5
https://www.whitetracks-holidays.com/Helicopter_Transfers_Villars_Switzerland.htm Thanks in advance for any advice / help!0 -
If I disavow bad links on "disavow link webmaster" will they still show up on my moz reports?
We recently found out we have a lot of bad links linking back to our website from spam sites, I disavowed them through the google disavow link webmaster. On my moz report it still shows the links, is that normal?
Link Building | | Ryan.Cruz0 -
How many links per week/month should a link building campaign acquire?
I am running a linkbuilding campaign for my company. I am mostly focusing on guest blogging opportunities and responding to emails from HARO. How many links would I have to acquire each week or month to be considered doing a good job over a 6 month or a year time period? Thank you,
Link Building | | fersu0 -
What is a good ratio of total links to linking root domains?
Is 100 total links for every linking domain too high? I suppose I could also look at ratios of sites that are doing well in the rankings.
Link Building | | ProjectLabs0 -
Do inbound links to download .exe files improve SEO?
The site, (http://www.bartenderbarcodesoftware.com/) sells barcode software. They also provide free printer drivers on their site. During a recent domain change (before I started helping them), they began looking at their inbound links and found quite a few external sites linking to these download files. However, when someone clicks on the link on one of these sites (i.e. http://vvs-motor.com.ua/barcode-printer-drivers) it immediately begins downloading the file (i.e. http://www.seagullscientific.com/downloads/drivers/archive/7.2/7.2.4/Unimark_7.2.4.exe) without taking the visitor to the site. The owner would greatly prefer this traffic to engage with the site and is considering 301 redirecting those download links to an actual webpage. Question: Would this look suspicious to Google? Would this have a positive or negative effect on SEO? The last factor to consider is that many of these sites will likely just recreate the list based on the new links at some future point. Thanks for any help!
Link Building | | motosantiago0 -
Etsy.com --Getting link juice through other pages on search results?
My sister has a store page on etsy.com where she sells home made crafts. And I want to help her rank higher on google with some of the other etsy stores. So i started to look at the other etsy store pages that are ranking well on google and found that they have a page authority between 48 to 52. So i looked at the backlinks of the ones ranking well on google with high page authority and found that many of their best links came from the internal search results page on etsy.com, and some only had one link from just an arbitrary etsy.com search page. I'm thinking this is because another product being listed on the seach page has a high page authority which then passes some of its link juice onto every other product on the page. But what is interesting is products are always being sold or getting added so even though you are on a search results page that happens to benifit from the link juice of another product the next time the page gets crawled you will be on a different search page. So i am thinking in order to maintain high page authority to you just have to have a lot of products listed so that there is a greater likely hood that you will find yourself on the same search page as another high authority page. I have not been doing SEO very long so i would love to hear what others think. I really have no idea, am i on the right track with this? (edited post) Thanks
Link Building | | doug5650 -
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