# An application notes library that ranks and brings in leads An application notes library works when every note has its own HTML page, with the summary, key data, author and date as text, and the full PDF alongside. The PDF sends a canonical header pointing to that page, any form gates only the complete document, and the library can be filtered by application, scale and technique. [Web version](https://www.crida.studio/en/insights/guides/application-notes-library/) By David Monje, crida studio · Published 2026-11-06 · Updated 2026-11-06 ## Why every application note needs its own HTML page Google can index a PDF. Adobe PDF is on its list of indexable file types, next to HTML, Word and Excel. The trouble starts once someone lands on it from search. They open the PDF on its own, outside the site, with no path to the product page or to a contact form. One page per note fixes that. It carries a title with the application and scale, a three or four line summary, the key data as text or in a table, and the PDF to download. Readers see at once whether the note is relevant, and the summary and data sit on the page as text rather than inside a file. ## How to stop the PDF competing with its own page If the page and the PDF say the same thing, you have two URLs with very similar content. Google explains that the HTML canonical element only works on HTML pages, and that for files such as PDFs you can send a rel canonical HTTP header instead. The same logic applies to [an equipment datasheet](https://www.crida.studio/en/insights/guides/equipment-datasheet-product-page/). Whoever runs the server sets the header, and it must point to the full URL of the note's page, including https. Google treats it as a strong signal and says these methods stack. So the sitemap should list the note's page rather than the PDF, and every internal link should go to the page. ### Does Google index application notes in PDF? Yes. PDF is on the list of file types Google can index. But a standalone PDF does not take readers to the product page or to a contact form, and it rarely says who wrote it or when. That is why each note is better off with its own HTML page, with the summary and key data, and a canonical header on the PDF pointing to that page. ## Where the form goes on each note's page Which notes are worth gating and which to leave open is covered in our guide on [white paper, application note or webinar](https://www.crida.studio/en/insights/guides/white-paper-application-note-or-webinar/). For the library, what matters is where the form sits. The summary and key data stay open on the note's page, and the form, if there is one, asks for a few details in exchange for the full PDF. That way the part that answers the search is visible to everyone, Google included. ## What Google should see when the full note needs registration If you want Google to index a note that readers only see after registering, Google has structured data for subscription and paywalled content that also covers registration. You mark the page with isAccessibleForFree set to false and use hasPart with a CSS class selector to show which part is gated. If you do not want the gated document indexed, Google says none of this is needed. That markup helps Google tell gated content apart from cloaking, which breaks its spam policies. Cloaking means showing search engines one thing and people another in order to manipulate rankings. Google says a paywall or content gate is not cloaking as long as Google can see the full content, just like anyone with access, and you follow its Flexible Sampling guidance. ### If I add a form, does Google stop seeing the note? It depends on what you want indexed. If the full registration-only document should appear in Google, Google needs to see all of it, just like a registered reader, and the page needs the structured data for subscription content. If you do not want it indexed, Google says no markup is needed, and the open page with the summary stays visible to everyone. ## Filters for application, scale and technique, and links from every product page People looking for an application note think about their own process. So the library should filter by application, such as monoclonal antibodies, vaccines or cell therapy, by scale, from lab to production, and by technique, such as bioreactor culture or tangential flow filtration. Each product page should link to the notes run on that equipment, and each note should link back to the product page of the equipment used. That way an engineer who arrives through a note reaches the product, and one who arrives through the product finds the evidence. [Third-party papers that cite the equipment](https://www.crida.studio/en/insights/guides/scientific-papers-citing-your-equipment/) belong on a separate page, because you did not write them. ![Scientist in a white lab coat seen from behind working at a laptop on a laboratory bench with tubing, cables and reagents](https://www.crida.studio/recursos/assets/cientifica-portatil-laboratori.5c41ffd6603b.webp) Lab staff should be able to find a note by application and scale in a couple of clicks ThisisEngineering / Unsplash — https://unsplash.com/photos/8yS04veb1TQ ## Author, date and version on every note Each note should say who produced it, usually the application scientist or engineer who ran the test, and when it was published. Google recommends a visible, prominent date labelled with words such as Published or Last updated, and the same date in structured data through datePublished and dateModified. The visible date and the structured data date must match. Google also asks you not to use future dates and to give the date of the page, not of the experiment it describes. If a note changes because of new equipment or new data, show the version on the PDF and the update date on the page. ### Should old application notes be taken down? Not if the data is still correct for equipment you sell. If the equipment is discontinued, say so on the page and link to the model that replaces it. If a note genuinely changes, update its version and date. Changing only the date to make it look fresh gives readers nothing and costs you their trust. ## What to measure to see if the library brings in leads In Search Console, the performance report filtered to the library folder shows which notes get clicks and for which queries. If application and scale searches are coming in, the library is putting you in front of new buyers. If only model names show up, it is still mostly found by people who already know you. On the site, track how many people move from a note to the product page, how many forms are sent from the library and how many quote requests started from a note. That last number is the one sales cares about, and we set it up as part of [our SEO work](https://www.crida.studio/en/insights/services/search-engine-optimisation/). A library like this needs marketing, applications and web working together. David Monje, founder of crida studio, led marketing at TECNIC Bioprocess Solutions for three and a half years, acting as the bridge between engineering, product and sales. We review it as part of our [marketing for biotech, bioprocess and pharma companies](https://www.crida.studio/en/insights/services/biotech-bioprocess-pharma-marketing/). ## References - [Google Search Central. File types indexable by Google](https://developers.google.com/search/docs/crawling-indexing/indexable-file-types) - [Google Search Central. How to specify a canonical URL, including the HTTP header](https://developers.google.com/search/docs/crawling-indexing/consolidate-duplicate-urls) - [Google Search Central. Structured data for subscription and paywalled content](https://developers.google.com/search/docs/appearance/structured-data/paywalled-content) - [Google Search Central. Spam policies, cloaking](https://developers.google.com/search/docs/essentials/spam-policies) - [Google Search Central. Influence your byline dates in Google Search](https://developers.google.com/search/docs/appearance/publication-dates) ## The crida perspective We are a marketing, brand and technology studio based in Girona. We bring identity, content and development together so a digital experience makes sense from beginning to end. crida studio, Caldes de Malavella (Girona, Spain). David Monje, founder and director. ## Want to sort out your application notes library? Tell us how many notes, protocols and white papers you have, where they live now and what you want them to do. We will tell you how we would organise them for Google and for sales. [Tell us more](https://www.crida.studio/en/#contact) ## More on web design - [White paper, application note or webinar for technical lead generation](https://www.crida.studio/en/insights/guides/white-paper-application-note-or-webinar/) - [How to turn an equipment datasheet into a product page that sells](https://www.crida.studio/en/insights/guides/equipment-datasheet-product-page/) - [SEO for lab and bioprocess equipment manufacturers, where to start](https://www.crida.studio/en/insights/guides/seo-lab-bioprocess-equipment-manufacturers/) - [How to appear in AI answers when buyers look for bioprocess suppliers](https://www.crida.studio/en/insights/guides/appear-ai-answers-bioprocess-suppliers/) - [How to use papers that cite your equipment on your website](https://www.crida.studio/en/insights/guides/scientific-papers-citing-your-equipment/) - [Life science copywriting that scientists actually trust](https://www.crida.studio/en/insights/guides/writing-for-scientists-website/) - [SEO and search visibility](https://www.crida.studio/en/insights/services/search-engine-optimisation/)