Official source
301, 302, 307, 308: Which redirect is the chosen one?
Gary Illyes and Cherry Prommawin explain what separates a 301 from a 302 redirect, what 307 and 308 are, and whether any of it affects canonicalisation.
Channel
Google Search Central
Listed newest first. Channel on YouTube
Official source
PDFs in Search: Indexing, AI & Pitfalls
PDF files in search get their own treatment at Google, and Martin Splitt and John Mueller explain how they are indexed, when HTML is the better choice, and traps like rasterised text.
Official source
Do sitemaps still matter?
Do XML sitemaps still matter? Martin Splitt and John Mueller look back at their history, ask whether crawlers can work out site structure alone, and discuss why fetch warnings in Search Console worry owners.
Official source
How to read the Indexing Report
Should you worry when Search Console lists pages as not indexed? Martin Splitt and John Mueller explain how to read the Page Indexing report and whether a 404 always means a broken site.
Official source
Crawling smarter, not harder | Search Off the Record
Does crawling more often mean a better site? John Mueller, Lizzi Sassman and Gary Illyes untangle ideas about crawl frequency and site quality, and ask how crawling could be more efficient.
Official source
Rendering JavaScript for Google Search | Search Off the Record
JavaScript rendering in Google Search is explained by Zoe Clifford, who joins Martin Splitt and John Mueller to talk about the DOM, whether every page is rendered and how long it takes.
Official source
How Google Search crawls pages
How does Google Search crawl pages? This walk-through goes from finding URLs to fetching and rendering them, and explains what Googlebot is and why sitemaps can help.
Older: check current guidanceOfficial source
Curing crawling chaos
Crystal Carter talks with Martin Splitt about a site that no crawling tool could crawl fully, the steps and tools used to fix it, and how monitoring can head it off.
Older: check current guidanceOfficial source
Hunting a heinous hreflang headache
An ecommerce site that could not process orders sets up this debugging story, in which Bastian Grimm explains how a vague client request led to testing ideas with several tools.
Older: check current guidanceOfficial source
Canonicalization: SEO Mythbusting
Is canonicalisation a directive or a signal? Martin Splitt and Rachel Costello work through common myths about it, with timestamps to jump to each question.
Older: check current guidance
