What it is
PageGrade is a WXT Chrome extension (Manifest V3) for anyone who wants per-section feedback on a page's clarity, writing and on-page SEO. It shows ten rubric scores, an A–E grade and overlays badges on the page.
How it uses Jev
Jev answers typed score questions from lib/rubric.ts using five ordered anchors; its 0–4 result is normalized to 0–100 by multiplying by 25. Ten metrics are scored per section (and per 6,000-character chunk), then averaged by character count into a weighted section quality.
Primitives:score
Technique worth stealing
Per-section extraction with heading/semantic boundaries, chunked scoring at word boundaries, and sqrt-capped weighting so no single section dominates.
Try it
Requires Bun and Chrome 120+. Run bun install --frozen-lockfile, bun run build, load .output/chrome-mv3 unpacked, then analyze a page.
Evidence
Each line is one question put to Jev about the README. ≥ 0.60 reads as yes, ≤ 0.40 as no; in between Jev is not making a call.
- Jev-centricyes0.82
- Shows a System One patternno0.08
- Handles uncertaintyno0.04
- Measuredno0.04
- Runnableyes0.84
- Worth recommendingno0.25
- Model replicano0.06
- Problem scopescore on a 0–2 scale1.16
- About Jevyes0.97
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.