ALT A dark-themed line chart titled “SSIMULACRA2,” showing BD-Rate (%) versus encoding speed in milliseconds for several image codecs. Colored lines compare codecs including AOM, JPEG XL, aperture-alpha, Iris-WebP, libjxl, SVT-AV1, and libwebp, with labeled data points. Most curves show higher BD-Rate at slower speeds, while some reach negative BD-Rate at faster speeds.

ALT DebugBear RUM dashboard showing Core Web Vitals at the P75 percentile: Largest Contentful Paint 1.58s, Interaction to Next Paint 176ms, and Cumulative Layout Shift 0.01, all flagged green on the score bar.

ALT DebugBear RUM dashboard showing Core Web Vitals at the P90 percentile: Largest Contentful Paint 2.68s, Interaction to Next Paint 352ms, and Cumulative Layout Shift 0.17, all flagged orange or red on the score bar.

ALT A dark-themed presentation slide titled "TL;DR" displaying tips for optimizing Claude API usage and token efficiency. The slide is divided into two columns: Left column discusses: - Using `/clear` command between tasks to prevent context carryover and reduce token usage - Setting model and effort level before starting a session to avoid breaking the prompt cache mid-conversation - Mentioning files with @ notation instead of naming them, to attach files directly and save API calls Right column covers: - Adding quiet flags to commands or running them in a subagenr to manage noisy output while keeping results in the conversation - Running `/context` once per session to review loaded content (CLAUDE.md and MCP tool definitions) and remove unnecessary items - Running `/compact` before breaks, since prompt cache expires after an hour and summarizing conversations is cheaper while the cache is active

ALT A printed thank-you letter from Addy Osmani on a dark background, hand-signed and dated 2026, next to its opened envelope postmarked San Francisco. Four stickers lie beside it: "Coder", "Computer Club", a Cmd+Z one reading "Just Undo It", and a perfume bottle reading "#perfmatters".

ALT SpeedCurve budget dashboard: status "Over", latest value 27.93s against a 0.15s budget, 18,520% over. The weekly chart shows a stable baseline around 2s with sharp isolated spikes above 20s on Jul 29, Jul 31, Aug 3 and Aug 4.

ALT SpeedCurve size metrics: HTML 15 KB, inline styles 14 KB, inline JS 8 KB. Below, the sessions table lists a session at 7:06 AM from the United States on Chrome 149, with an average First Contentful Paint of 27.93s.

ALT SpeedCurve time metrics: Backend (TTFB) 27.44s, Frontend 8.18s, Start Render 27.93s, First Contentful Paint 27.93s, Largest Contentful Paint 27.97s, Page Load 35.62s. First Input Delay and INP both 0 ms.

ALT SpeedCurve alert: the First Contentful Paint (RUM) budget exceeds its 0.15s threshold by 3047%, reaching 4.72s. The chart shows the metric flat and green until 20:00, then climbing and spiking to nearly 5s.

ALT Screenshot of a desktop web browser displaying the agent-skills website on the left and Chrome DevTools’ Network tab on the right. The webpage heading reads “How agent-skills compares” with explanatory text describing how agent-skills relates to Superpowers and Matt Pocock’s skills, along with a “TL;DR” summary card. The DevTools Network panel shows document requests, including several 301 Moved Permanently redirects (such as skills, getting-started, lifecycle, teach, and compare) followed by corresponding 200 OK responses for URLs ending with trailing slashes. The browser address bar displays skills.addy.ie/compare/, and the Network panel is configured with Preserve log and Disable cache enabled and No throttling selected.