Recording of the visual regression run on semicolony.dev · Semicolony — CPU visualizer walk.

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S
Passed ✓

Test recording

Semicolony — CPU visualizer walk

82,779 ms · 3,540 pixels changed

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export async function test(page, baseUrl, screenshotPath, stepLogger) {
  let scn = 0;
  const shot = async (slug) => {
    scn += 1;
    const p = screenshotPath.replace('.png', `-${String(scn).padStart(2,'0')}-${slug}.png`);
    try { await page.screenshot({ path: p, fullPage: true }); } catch (e) {}
    stepLogger.log(`shot ${scn} ${slug}`);
  };

  await page.goto(baseUrl, { waitUntil: 'domcontentloaded', timeout: 20000 });
  await page.waitForLoadState('networkidle', { timeout: 8000 }).catch(() => {});
  await page.waitForTimeout(2500);
+40 more lines — claim the test to get the full code.

Checks run

Run
✓
Visual
0.09%
Text
—
DOM
✓
Network
+7 −14
Console
✓
A11y
—
Perf
224 over
URL
7 diverged
Variables
—
Full report
Log in →
3,540
Diff px
1m 23s
Duration
—
Accessible
C
Fast
Web Vitals · 70

Notes from the demo run

AI-generated

Semicolony visualizes what happens inside a CPU when a program runs — long scrolling explainer with embedded interactive elements. No login. Single-page educational tool aimed at programmers learning systems internals.

Highlights
  • Single-page longread + interactive
    Combines an explainer's clarity with hands-on Run/Step controls. The pacing across 4 sections feels deliberate.
Friction points
  • Interactive controls discoverability
    The Run/Step buttons live mid-scroll; readers who skim past them miss the interactive payoff. A sticky 'jump to interactive' anchor would help.

7 visual changes

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Step 6567 px changed
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Step 7705 px changed
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