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| 1 | +# Performance Report — codersforcauses.org |
| 2 | + |
| 3 | +> Generated: 2026-02-26 |
| 4 | +> Tool: Chrome DevTools MCP (no CPU/network throttling, lab conditions) |
| 5 | +> No CrUX field data available for this site. |
| 6 | +
|
| 7 | +--- |
| 8 | + |
| 9 | +## Summary |
| 10 | + |
| 11 | +| Page | LCP | CLS | Status | |
| 12 | +| ------------------------------------ | -------- | -------- | ------------- | |
| 13 | +| Homepage (`/`) | 463 ms | 0.00 | Good | |
| 14 | +| User Dashboard (`/dashboard`) | 463 ms\* | 0.00\* | Good | |
| 15 | +| Admin Dashboard (`/dashboard/admin`) | 827 ms | **0.25** | CLS needs fix | |
| 16 | + |
| 17 | +> \* Dashboard page not independently traced — estimated similar to homepage. |
| 18 | +
|
| 19 | +--- |
| 20 | + |
| 21 | +## Page 1: Homepage (`/`) |
| 22 | + |
| 23 | +### Core Web Vitals |
| 24 | + |
| 25 | +| Metric | Score | Threshold | |
| 26 | +| ------ | ------ | --------------- | |
| 27 | +| LCP | 463 ms | Good (<2,500ms) | |
| 28 | +| CLS | 0.00 | Good (<0.1) | |
| 29 | + |
| 30 | +### LCP Breakdown |
| 31 | + |
| 32 | +The LCP element is a `<p>` text node — no network fetch needed. |
| 33 | + |
| 34 | +| Phase | Time | % of LCP | |
| 35 | +| -------------------- | ---------- | --------- | |
| 36 | +| TTFB | 53 ms | 11.5% | |
| 37 | +| Element Render Delay | **410 ms** | **88.5%** | |
| 38 | + |
| 39 | +The large render delay is caused by Next.js JS hydration blocking text rendering before it becomes the LCP element. |
| 40 | + |
| 41 | +### Issues |
| 42 | + |
| 43 | +#### 1. JS Hydration Render Delay (410ms) |
| 44 | + |
| 45 | +LCP text is not painted until after JS hydration completes. |
| 46 | + |
| 47 | +**Fix:** Ensure the LCP text is present in the initial SSR HTML and is not dependent on client-side JS to render. |
| 48 | + |
| 49 | +#### 2. Network Dependency Chain (critical path: 567ms) |
| 50 | + |
| 51 | +``` |
| 52 | +HTML → CSS (a25ca756ef64d4e8.css, 400ms) |
| 53 | + └── Font (material-symbols-sharp.fcbbf02a.woff2, 411ms) |
| 54 | +``` |
| 55 | + |
| 56 | +The font is only discovered after CSS is parsed. No `preconnect` hints configured. |
| 57 | + |
| 58 | +**Fix:** Add a preload hint in `<head>` to break the chain: |
| 59 | + |
| 60 | +```html |
| 61 | +<link |
| 62 | + rel="preload" |
| 63 | + href="/_next/static/media/material-symbols-sharp.fcbbf02a.woff2" |
| 64 | + as="font" |
| 65 | + type="font/woff2" |
| 66 | + crossorigin |
| 67 | +/> |
| 68 | +``` |
| 69 | + |
| 70 | +#### 3. Unsized Client Logo Images (CLS: 0.0038 — minor but recurring) |
| 71 | + |
| 72 | +The logo carousel triggers 34 micro layout shifts (589ms–4,134ms) from unsized `<img>` elements: |
| 73 | + |
| 74 | +| Image | Shifts | |
| 75 | +| --------------------- | ------ | |
| 76 | +| `foodbank_logo.svg` | 1 | |
| 77 | +| `csf_logo_dark.svg` | 26 | |
| 78 | +| `repair_lab_logo.png` | 7 | |
| 79 | + |
| 80 | +**Fix:** Add explicit `width` and `height` attributes to carousel `<img>` tags: |
| 81 | + |
| 82 | +```html |
| 83 | +<img |
| 84 | + src="/clients/csf_logo_dark.svg" |
| 85 | + width="160" |
| 86 | + height="60" |
| 87 | + class="brightness-110 contrast-[0.2] grayscale transition duration-300" |
| 88 | +/> |
| 89 | +``` |
| 90 | + |
| 91 | +Or use CSS `aspect-ratio` to reserve space before images load. |
| 92 | + |
| 93 | +--- |
| 94 | + |
| 95 | +## Page 2: Admin Dashboard (`/dashboard/admin`) |
| 96 | + |
| 97 | +### Core Web Vitals |
| 98 | + |
| 99 | +| Metric | Score | Threshold | |
| 100 | +| ------ | -------- | ------------------------------- | |
| 101 | +| LCP | 827 ms | Good (<2,500ms) | |
| 102 | +| CLS | **0.25** | **Bad (>0.1, at Bad boundary)** | |
| 103 | + |
| 104 | +### LCP Breakdown |
| 105 | + |
| 106 | +The LCP element is the footer logo `cfc_logo_white_full.svg` — unusual, as the actual page content (user data table) is not the LCP element, suggesting the table content is rendered client-side. |
| 107 | + |
| 108 | +| Phase | Time | % of LCP | |
| 109 | +| ---------------------- | ---------- | --------- | |
| 110 | +| TTFB | 55 ms | 6.6% | |
| 111 | +| Resource Load Delay | **667 ms** | **80.6%** | |
| 112 | +| Resource Load Duration | 57 ms | 6.9% | |
| 113 | +| Element Render Delay | 49 ms | 5.9% | |
| 114 | + |
| 115 | +### Issues |
| 116 | + |
| 117 | +#### 1. CLS: 0.25 — CRITICAL |
| 118 | + |
| 119 | +A single layout shift of score **0.2482** at 1,308ms dominates. Root cause: the footer logo `cfc_logo_white_full.svg` has no `width`/`height` attributes. |
| 120 | + |
| 121 | +**Fix:** Add explicit dimensions to the footer logo: |
| 122 | + |
| 123 | +```html |
| 124 | +<!-- In the footer component --> |
| 125 | +<img |
| 126 | + src="/logo/cfc_logo_white_full.svg" |
| 127 | + class="!w-auto object-top md:!h-auto" |
| 128 | + width="200" |
| 129 | + height="50" |
| 130 | + alt="Coders for Causes logo" |
| 131 | +/> |
| 132 | +``` |
| 133 | + |
| 134 | +#### 2. LCP Image: Missing `fetchpriority=high` + Lazy Loading Applied |
| 135 | + |
| 136 | +The LCP image (`cfc_logo_white_full.svg`) failed two discovery checks: |
| 137 | + |
| 138 | +- `fetchpriority=high` not set |
| 139 | +- `loading="lazy"` is applied (delays the LCP image) |
| 140 | + |
| 141 | +**Fix:** |
| 142 | + |
| 143 | +```html |
| 144 | +<img |
| 145 | + src="/logo/cfc_logo_white_full.svg" |
| 146 | + fetchpriority="high" |
| 147 | + loading="eager" <!-- remove lazy loading from LCP images --> |
| 148 | + width="200" |
| 149 | + height="50" |
| 150 | +/> |
| 151 | +``` |
| 152 | + |
| 153 | +#### 3. LCP Resource Load Delay (667ms — 80.6% of LCP) |
| 154 | + |
| 155 | +The logo image isn't requested until 722ms after navigation starts. The browser can't discover it until late in page load. |
| 156 | + |
| 157 | +**Fix:** Add a `preload` hint for the logo if it consistently appears as the LCP element: |
| 158 | + |
| 159 | +```html |
| 160 | +<link rel="preload" href="/logo/cfc_logo_white_full.svg" as="image" /> |
| 161 | +``` |
| 162 | + |
| 163 | +#### 4. Aggressive Cache Revalidation on Static Asset |
| 164 | + |
| 165 | +The logo SVG returns `cache-control: public, max-age=0, must-revalidate`, meaning every page load triggers a revalidation request. The 304 response still adds latency. |
| 166 | + |
| 167 | +**Fix:** For static/versioned assets, use long-lived caching: |
| 168 | + |
| 169 | +``` |
| 170 | +cache-control: public, max-age=31536000, immutable |
| 171 | +``` |
| 172 | + |
| 173 | +Since this is deployed on Vercel, configure this in `next.config.js` or `vercel.json`. |
| 174 | + |
| 175 | +#### 5. Network Dependency Chain (critical path: 1,123ms) |
| 176 | + |
| 177 | +``` |
| 178 | +HTML → CSS (a25ca756ef64d4e8.css, 717ms) |
| 179 | + └── Font (material-symbols-sharp.fcbbf02a.woff2, 786ms) |
| 180 | +``` |
| 181 | + |
| 182 | +Same font chain issue as the homepage — no `preconnect` or `preload` hints. |
| 183 | + |
| 184 | +--- |
| 185 | + |
| 186 | +## Top Priorities (All Pages) |
| 187 | + |
| 188 | +| Priority | Issue | Page(s) | Impact | |
| 189 | +| -------- | ------------------------------------------- | --------------- | ------------- | |
| 190 | +| 1 | CLS 0.25 from unsized footer logo | Admin Dashboard | CLS (Bad) | |
| 191 | +| 2 | Remove `loading="lazy"` from LCP image | Admin Dashboard | LCP | |
| 192 | +| 3 | Add `fetchpriority="high"` to LCP image | Admin Dashboard | LCP | |
| 193 | +| 4 | Preload `material-symbols-sharp.woff2` font | All pages | LCP / FCP | |
| 194 | +| 5 | Fix LCP text render delay (JS hydration) | Homepage | LCP | |
| 195 | +| 6 | Add `width`/`height` to carousel logos | Homepage | CLS stability | |
| 196 | +| 7 | Fix logo `cache-control` to long-lived | Admin Dashboard | Load speed | |
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