A personal blog and wiki operator explains an error page shown to visitors flagged by anti-crawler defenses that block suspicious or outdated browser User-Agent strings, particularly old Chrome versions widely used by high-volume crawlers (some scraping data for LLM training). The page details known false positives: Inoreader and Feedly feed fetchers mistakenly using fake old-browser User-Agents, Vivaldi users needing to disable Chrome User-Agent brand masking, and archive.today/archive.ph crawlers using suspicious old Chrome UAs and spoofed reverse DNS. Users are advised to use archive.org instead and to contact the site owner if incorrectly blocked.
Table of contents
A special note to people using Inoreader (the feed reader)A special note to people using Feedly (the feed reader)A special note for people using VivaldiA special note for people using archive.*184 Impressions