Speed Test Gauge
An SVG semicircular speedometer with a colour-graded arc (red → amber → green), tick marks at 0/50/100, and a needle that sweeps from the bottom. Drives every value via the `--pb-gauge-value` custom property — premium pattern for PageSpeed scores, performance audits, and internet speed tests.
Speed Test Gauge the 11th of 12 designs in the 12 CSS Progress Bar Designs collection. The design is implemented in pure CSS — no JavaScript required. Copy the HTML and CSS panels below into your project. Because the demo is pure CSS, it works in any framework or templating engine you happen to use. The design honours prefers-reduced-motion and uses real semantic markup, so it ships accessibility-ready out of the box.
Live preview
The code
<div
class="pb-gauge"
role="progressbar"
aria-valuenow="78"
aria-valuemin="0"
aria-valuemax="100"
aria-label="Performance score"
style="--pb-gauge-value: 78"
>
<svg class="pb-gauge-svg" viewBox="0 0 200 170" aria-hidden="true">
<defs>
<linearGradient id="pb-gauge-grad" x1="0" y1="0" x2="1" y2="0">
<stop offset="0%" stop-color="#f43f5e" />
<stop offset="50%" stop-color="#fb923c" />
<stop offset="100%" stop-color="#34d399" />
</linearGradient>
</defs>
<!-- track -->
<path
class="pb-gauge-track"
d="M 25 105 A 75 75 0 0 1 175 105"
fill="none"
stroke="rgba(255,255,255,0.06)"
stroke-width="12"
stroke-linecap="round"
/>
<!-- value arc -->
<path
class="pb-gauge-value"
d="M 25 105 A 75 75 0 0 1 175 105"
fill="none"
stroke="url(#pb-gauge-grad)"
stroke-width="12"
stroke-linecap="round"
pathLength="100"
/>
<!-- ticks -->
<text class="pb-gauge-tick" x="25" y="125" text-anchor="middle">0</text>
<text class="pb-gauge-tick" x="100" y="22" text-anchor="middle">50</text>
<text class="pb-gauge-tick" x="175" y="125" text-anchor="middle">100</text>
<!-- needle -->
<g class="pb-gauge-needle">
<line
x1="100"
y1="105"
x2="100"
y2="44"
stroke="#f0eeff"
stroke-width="3"
stroke-linecap="round"
/>
<circle cx="100" cy="105" r="7" fill="#fff" stroke="#15151d" stroke-width="2" />
</g>
<!-- score readout -->
<text class="pb-gauge-num" x="100" y="148" text-anchor="middle">78</text>
<text class="pb-gauge-label" x="100" y="164" text-anchor="middle">PERFORMANCE</text>
</svg>
</div> .pb-gauge {
width: 220px;
height: 170px;
font-family: system-ui, sans-serif;
}
.pb-gauge-svg {
width: 100%;
height: 100%;
display: block;
overflow: visible;
}
.pb-gauge-value {
stroke-dasharray: 100;
stroke-dashoffset: 100;
animation: pbGaugeArc 1.4s cubic-bezier(0.5, 0, 0.3, 1.2) forwards;
}
.pb-gauge-needle {
transform-origin: 100px 105px;
animation: pbGaugeSweep 1.4s cubic-bezier(0.5, 0, 0.3, 1.2) forwards;
filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.4));
}
.pb-gauge-tick {
font-family: "JetBrains Mono", monospace;
font-size: 10px;
font-weight: 700;
fill: #64748b;
letter-spacing: 0.04em;
}
.pb-gauge-num {
font-family: system-ui, sans-serif;
font-size: 30px;
font-weight: 700;
fill: #34d399;
font-variant-numeric: tabular-nums;
letter-spacing: -0.02em;
}
.pb-gauge-label {
font-family: system-ui, sans-serif;
font-size: 10px;
font-weight: 600;
fill: #94a3b8;
letter-spacing: 0.16em;
}
@media (prefers-reduced-motion: reduce) {
.pb-gauge-value {
animation: none;
stroke-dashoffset: calc(100 - var(--pb-gauge-value, 0));
}
.pb-gauge-needle {
animation: none;
transform: rotate(calc(var(--pb-gauge-value, 0) * 1.8deg - 90deg));
}
}
@keyframes pbGaugeArc {
to { stroke-dashoffset: calc(100 - var(--pb-gauge-value, 0)); }
}
@keyframes pbGaugeSweep {
from { transform: rotate(-90deg); }
to { transform: rotate(calc(var(--pb-gauge-value, 0) * 1.8deg - 90deg)); }
}