PCGamer Article Performance Audit

Simon Willison's Blog / 3/23/2026

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Key Points

  • The article reports results from a performance audit of a March 2026 PCGamer RSS reader article, finding that ad-tech, tracking, and programmatic advertising scripts account for over 82% of network traffic and transferred bytes.
  • Even though the main content is only around 10–15 KB of text (about 150 KB total with images), the page makes 431+ network requests and transfers 5.5 MB (18.8 MB decoded) within 60 seconds.
  • The report highlights how autoplay video ad carousels can dramatically inflate resource use, with Firefox ballooning total transfer to 200+ MB.
  • The author describes using Claude Code/Rodney to investigate the page and links to the audit repository and the investigation prompt/results.
  • It references commentary from Stuart Breckenridge about similar “web bloat” behavior in the PCGamer article, framing the audit as a concrete example of excessive loading behavior beyond the core content.
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22nd March 2026

Research PCGamer Article Performance Audit — A performance audit of the March 2026 PCGamer article on RSS readers reveals severe page bloat, with over 82% of network traffic and transferred bytes traced to ad-tech, tracking, and programmatic advertising scripts. Despite the core content consisting of just 10-15 KB of text and a handful of images (~150 KB total), the page triggers over 431 network requests and 5.5 MB of transfer (18.8 MB decoded) within 60 seconds—ballooning to 200+ MB in Firefox due to autoplay video carousels and…

Stuart Breckenridge pointed out that PC Gamer Recommends RSS Readers in a 37MB Article That Just Keeps Downloading, highlighting a truly horrifying example of web bloat that added up to 100s more MBs thanks to auto-playing video ads. I decided to have Claude Code for web use Rodney to investigate the page - prompt here.

Posted 22nd March 2026 at 10:49 pm

This is a beat by Simon Willison, posted on 22nd March 2026.

web-performance 21 rodney 5

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