Google explains how your PDF menus and forms reach search and AI Mode

Google's Martin Splitt and John Mueller walked through how Google handles PDF files on the Search Off The Record podcast. Search Engine Roundtable listed its write-up of the episode on October 13, 2026, and Search Engine Journal reported the details. Google did not announce any new system. What changed is that two Google staff explained how a PDF on your website gets into regular search results and into AI Mode, and where it can fall out.

That matters because most businesses keep real information in PDFs: a menu, a price list, an intake form, a brochure, a spec sheet. AI answers about your business can only draw on what Google was able to read.

Google reads a converted copy of your PDF, not the file

According to Search Engine Journal, Splitt explained that Google converts each PDF into HTML and indexes that conversion, not the PDF itself. He described it this way: "What we are doing in Search is we have a component called a converter. And the converter component is part of what happens in indexing." He said Google has converters for several formats, "such as rich text files, document files, Excel sheets, and Lotus Notes documents for some reason," and that the PDF converter produces "an HTML version of it so that the processing in the rest of the pipeline pretty much only works with HTML."

Think of it like a translator. Google does not read your PDF in the original. It reads a translation into a web page. Whatever survives the translation can be ranked. Whatever does not survive it is invisible to search.

One useful thing survives: links. Mueller said on the podcast, "So basically when Google sees a PDF file, it converts it into something that it has more practice with, kind of a web page. And I guess that's also why things like links also work in PDF files." Splitt agreed, saying the conversion aims to be "as true as is possible to that original format. So we can see things like links, for instance, from PDFs." In practice, a link in your brochure that points to your booking page is treated like a link on any other page.

PDFs can appear in AI Mode and AI Overviews like web pages

Search Engine Journal reports that Splitt confirmed PDFs can rank in AI Mode for the same reason they rank in regular search: the file is converted to HTML and indexed that way. Asked whether site owners should create PDFs at all, he said "indexing and ranking is pretty much the same as any other document." Mueller added: "So they can also appear in AI overviews, AI mode, all of those things."

Splitt also gave examples that will sound familiar to many owners. He said a holiday lodge publishing a registration form should "absolutely do this as a PDF if it helps you," and that restaurants often upload the same PDF menu they send to the printer. "It's better than not having your menu on the website at all," he said. He named the cases where PDF makes sense: specific formatting, documents that must look exact in print, and interactive pieces like forms.

A PDF that is only a picture of text quietly fails

There is a limit, and it is the part most businesses should act on. According to Search Engine Journal, Splitt said not every PDF can rank for its text, because some PDFs are essentially images. His test is simple: if you can highlight the text in the PDF and copy it into a text file, Google can convert it for ranking. Mueller repeated the same check: "if it's indexable text - if you try that trick that Martin mentioned, selecting everything and putting it into a text editor - then we can use it for search."

If you cannot highlight the text in your PDF and paste it into a text editor, Google cannot use that text for ranking either, according to Splitt and Mueller. That applies to a menu photographed on a phone or a price sheet scanned on the office copier and uploaded as a PDF.

Images inside PDFs are a further grey zone. Splitt said, "I think we understand there is an image, but I don't think we can actually process it like a normal image for image search. But that might change or might have changed; that's my current understanding of how that pipeline works." A rate card or a set of hours saved as a picture inside a PDF is therefore not something to count on.

File size is the other unknown. Splitt said Google probably allows a larger fetch limit for PDFs, as it does for videos and images, and that normal HTML limits probably apply once the PDF is converted. He also said, "I don't know the specific limit for PDF files," and that the limit could change if Google sees people publishing larger PDFs.

Google still prefers a normal web page when you have the choice

Mueller was pragmatic about menus: "If the option is have a menu as a PDF or don't have a menu at all, then yes, I would prefer to have a menu. But if the option is menu as a PDF versus a normal web page, I kind of like normal web pages because it's easier to interact with them." Splitt said much the same: "Obviously HTML is a really flexible format and I prefer that."

Mueller's advice, as Search Engine Journal quotes it, is that "if you have something that you can put into HTML and it's just the same as your PDFs, that makes everything a little bit easier." Search Engine Journal frames this as the core of SEO: making content easy for search engines to crawl and index.

The other side: much of this is two Google staff thinking aloud, not published rules. Splitt said image handling "might change or might have changed" and that he did not know the PDF size limit. Mueller opened the size question by admitting, "I realize some of these things maybe we just don't know the details, so we're kind of trying to extrapolate from what we do know." Neither source gives a published PDF size limit, and neither offers a measurement showing how much better an HTML page performs than an equivalent PDF. Mueller's preference is about ease, not a stated ranking penalty.

The rest of Google's week was about ad data and personal apps

Several other Google changes landed around the same days, and none of them changes the PDF picture. Barry Schwartz, executive editor of Search Engine Roundtable, reported on October 13, 2026 that Google revamped its Data Strength Best Practices help document for Google Ads. Google's own page now says customers who upgrade to Google tag gateway see, on average, a 14% uplift in observed conversions and up to a 7% lower cost per acquisition. These are Google's figures from its own data. The page also recommends passing at least 3 identifier signals per conversion event.

On October 14, 2026, Schwartz reported that Google Ads seems to be testing a Search terms and ad combinations report, spotted by Natasha Kaurra, who shared it on LinkedIn. It shows search terms, the headlines and descriptions that appeared, and the landing pages people reached. Kaurra said, "This report gives us another way to identify mismatches between search intent, ad messaging, and landing pages." It is a test, not a rollout.

Separately, TechCrunch's Sarah Perez reported that Google Play now lets people build private apps with Google AI Studio and run them on their own Android phone, initially for users in the U.S. aged 18 and up. Sam Bright, Google's VP and GM for the Google Play and Developer Ecosystem, described the shift as moving "from 'there's an app for that' to 'there's an app for me.'"

Bottom line

Google has not changed how it treats PDFs. It has explained it, and the explanation gives owners a five-second check. Open every PDF linked from your website and try to select the text. If you can, Google can read it and it can surface in search, AI Overviews and AI Mode. If you cannot, that document is a picture to Google, however important it is to your customers.

For anything customers ask about often, such as hours, prices, services or a menu, the safer move is to keep the PDF if it helps and also put the key text on a normal web page. Keep forms as PDFs if that is how your office works; Splitt was clear that is fine.

Which PDF on your website holds the answer a customer would ask an AI for, and have you checked that Google can read it?