# Progressive image loader
> A landscape shows up first in chunky pixels, then finer ones and finally sharp, like a photo on a slow connection.
- Category: [Loaders](https://library.aimran.es/components/loaders)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-ld-progressive-image
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham
## Where to use it
A sunset landscape sampled at build time at six by four and twelve by eight pixels, with every pixel colored as a real average of the two block colors, then replaced by a sharp vector version that comes into focus. A thin bar under the image tracks each stage. It suits galleries, travel sites and image heavy feeds.
The main color warms the sun and the horizon and the second sets the sky and the mountains, so the whole scene follows your palette. Use it as a placeholder where a photo or a map is about to load.
## Code
### HTML
```html
```
### CSS
```css
.uvq10-pix {
--c1: #ff7b39;
--c2: #2a6f97;
--s: 16px;
/* tamaño */
--k: 1;
/* velocidad */
--fg: #1d1d1f;
/* texto */
--bg: #f5f5f7;
/* fondo */
}
.uvq10-pix {
font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
font-size: var(--s);
color: var(--fg);
-webkit-tap-highlight-color: transparent;
position: relative;
}
.uvq10-pix .sr {
position: absolute;
width: 1px;
height: 1px;
overflow: hidden;
clip: rect(0 0 0 0);
white-space: nowrap;
}
.uvq10-pix .im {
position: relative;
width: 10.5em;
height: 7em;
border-radius: .6em;
overflow: hidden;
background: color-mix(in srgb,var(--fg) 10%,var(--bg));
box-shadow: 0 0 0 1px color-mix(in srgb,var(--fg) 10%,transparent),0 1em 1.6em -1em rgba(0,0,0,.5);
}
.uvq10-pix svg {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
display: block;
}
.uvq10-pix .px {
shape-rendering: crispEdges;
}
.uvq10-pix .l0 {
animation: uvq10-pix-0 calc(4.4s / var(--k)) steps(1) infinite;
}
.uvq10-pix .l1 {
animation: uvq10-pix-1 calc(4.4s / var(--k)) steps(1) infinite;
}
.uvq10-pix .vc {
animation: uvq10-pix-2 calc(4.4s / var(--k)) infinite;
}
.uvq10-pix .pg {
position: absolute;
left: 0;
bottom: 0;
height: .22em;
width: 100%;
transform-origin: 0 50%;
background: #fff;
mix-blend-mode: difference;
animation: uvq10-pix-p calc(4.4s / var(--k)) cubic-bezier(.25,.1,.25,1) infinite;
}
.uvq10-pix .p0 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 20%,var(--c2)) 50%,#fff);
}
.uvq10-pix .p1 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 40%,var(--c2)) 50%,#fff);
}
.uvq10-pix .p2 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 57%,var(--c2)) 70%,#fff);
}
.uvq10-pix .p3 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 50%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p4 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 50%,var(--c2)) 60%,color-mix(in oklab,#fff 75%,#000));
}
.uvq10-pix .p5 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 83%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p6 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 17%,var(--c2)) 60%,#000);
}
.uvq10-pix .p7 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 60%,var(--c2)) 50%,#000);
}
.uvq10-pix .p8 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 33%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p9 {
fill: color-mix(in oklab,var(--c1) 60%,#fff);
}
.uvq10-pix .p10 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 67%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p11 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 43%,var(--c2)) 70%,color-mix(in oklab,#fff 67%,#000));
}
.uvq10-pix .p12 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 17%,var(--c2)) 60%,color-mix(in oklab,#fff 25%,#000));
}
.uvq10-pix .p13 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 50%,var(--c2)) 60%,color-mix(in oklab,#fff 50%,#000));
}
.uvq10-pix .p14 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 29%,var(--c2)) 70%,color-mix(in oklab,#fff 33%,#000));
}
.uvq10-pix .p15 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 40%,var(--c2)) 50%,#000);
}
.uvq10-pix .p16 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 33%,var(--c2)) 60%,#000);
}
.uvq10-pix .s0 {
stop-color: color-mix(in oklab,var(--c2) 50%,#fff);
}
.uvq10-pix .s1 {
stop-color: color-mix(in oklab,color-mix(in oklab,var(--c1) 79%,var(--c2)) 70%,#fff);
}
.uvq10-pix .sun {
fill: color-mix(in oklab,var(--c1) 60%,#fff);
}
.uvq10-pix .far {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 8%,var(--c2)) 60%,#000);
}
.uvq10-pix .near {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 60%,var(--c2)) 50%,#000);
}
@keyframes uvq10-pix-0 {
0% {
opacity: 0;
}
8%,100% {
opacity: 1;
}
}
@keyframes uvq10-pix-1 {
0% {
opacity: 0;
}
30%,100% {
opacity: 1;
}
}
@keyframes uvq10-pix-2 {
0%,54% {
opacity: 0;
filter: blur(6px);
}
56% {
opacity: 1;
filter: blur(5px);
}
76%,100% {
opacity: 1;
filter: blur(0);
}
}
@keyframes uvq10-pix-p {
0% {
transform: scaleX(0);
opacity: 1;
}
8% {
transform: scaleX(.2);
}
30% {
transform: scaleX(.5);
}
56% {
transform: scaleX(.8);
}
76% {
transform: scaleX(1);
opacity: 1;
}
86%,100% {
transform: scaleX(1);
opacity: 0;
}
}
@media (prefers-reduced-motion:reduce) {
.uvq10-pix,.uvq10-pix *,.uvq10-pix *::before,.uvq10-pix *::after {
animation-duration: .01ms!important;
animation-iteration-count: 1!important;
transition-duration: .01ms!important;
}
}
```
### React
```tsx
import type { CSSProperties } from "react";
const css = `
.uvq10-pix {
font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
font-size: var(--s);
color: var(--fg);
-webkit-tap-highlight-color: transparent;
position: relative;
}
.uvq10-pix .sr {
position: absolute;
width: 1px;
height: 1px;
overflow: hidden;
clip: rect(0 0 0 0);
white-space: nowrap;
}
.uvq10-pix .im {
position: relative;
width: 10.5em;
height: 7em;
border-radius: .6em;
overflow: hidden;
background: color-mix(in srgb,var(--fg) 10%,var(--bg));
box-shadow: 0 0 0 1px color-mix(in srgb,var(--fg) 10%,transparent),0 1em 1.6em -1em rgba(0,0,0,.5);
}
.uvq10-pix svg {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
display: block;
}
.uvq10-pix .px {
shape-rendering: crispEdges;
}
.uvq10-pix .l0 {
animation: uvq10-pix-0 calc(4.4s / var(--k)) steps(1) infinite;
}
.uvq10-pix .l1 {
animation: uvq10-pix-1 calc(4.4s / var(--k)) steps(1) infinite;
}
.uvq10-pix .vc {
animation: uvq10-pix-2 calc(4.4s / var(--k)) infinite;
}
.uvq10-pix .pg {
position: absolute;
left: 0;
bottom: 0;
height: .22em;
width: 100%;
transform-origin: 0 50%;
background: #fff;
mix-blend-mode: difference;
animation: uvq10-pix-p calc(4.4s / var(--k)) cubic-bezier(.25,.1,.25,1) infinite;
}
.uvq10-pix .p0 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 20%,var(--c2)) 50%,#fff);
}
.uvq10-pix .p1 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 40%,var(--c2)) 50%,#fff);
}
.uvq10-pix .p2 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 57%,var(--c2)) 70%,#fff);
}
.uvq10-pix .p3 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 50%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p4 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 50%,var(--c2)) 60%,color-mix(in oklab,#fff 75%,#000));
}
.uvq10-pix .p5 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 83%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p6 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 17%,var(--c2)) 60%,#000);
}
.uvq10-pix .p7 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 60%,var(--c2)) 50%,#000);
}
.uvq10-pix .p8 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 33%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p9 {
fill: color-mix(in oklab,var(--c1) 60%,#fff);
}
.uvq10-pix .p10 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 67%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p11 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 43%,var(--c2)) 70%,color-mix(in oklab,#fff 67%,#000));
}
.uvq10-pix .p12 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 17%,var(--c2)) 60%,color-mix(in oklab,#fff 25%,#000));
}
.uvq10-pix .p13 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 50%,var(--c2)) 60%,color-mix(in oklab,#fff 50%,#000));
}
.uvq10-pix .p14 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 29%,var(--c2)) 70%,color-mix(in oklab,#fff 33%,#000));
}
.uvq10-pix .p15 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 40%,var(--c2)) 50%,#000);
}
.uvq10-pix .p16 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 33%,var(--c2)) 60%,#000);
}
.uvq10-pix .s0 {
stop-color: color-mix(in oklab,var(--c2) 50%,#fff);
}
.uvq10-pix .s1 {
stop-color: color-mix(in oklab,color-mix(in oklab,var(--c1) 79%,var(--c2)) 70%,#fff);
}
.uvq10-pix .sun {
fill: color-mix(in oklab,var(--c1) 60%,#fff);
}
.uvq10-pix .far {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 8%,var(--c2)) 60%,#000);
}
.uvq10-pix .near {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 60%,var(--c2)) 50%,#000);
}
@keyframes uvq10-pix-0 {
0% {
opacity: 0;
}
8%,100% {
opacity: 1;
}
}
@keyframes uvq10-pix-1 {
0% {
opacity: 0;
}
30%,100% {
opacity: 1;
}
}
@keyframes uvq10-pix-2 {
0%,54% {
opacity: 0;
filter: blur(6px);
}
56% {
opacity: 1;
filter: blur(5px);
}
76%,100% {
opacity: 1;
filter: blur(0);
}
}
@keyframes uvq10-pix-p {
0% {
transform: scaleX(0);
opacity: 1;
}
8% {
transform: scaleX(.2);
}
30% {
transform: scaleX(.5);
}
56% {
transform: scaleX(.8);
}
76% {
transform: scaleX(1);
opacity: 1;
}
86%,100% {
transform: scaleX(1);
opacity: 0;
}
}
@media (prefers-reduced-motion:reduce) {
.uvq10-pix,.uvq10-pix *,.uvq10-pix *::before,.uvq10-pix *::after {
animation-duration: .01ms!important;
animation-iteration-count: 1!important;
transition-duration: .01ms!important;
}
}
`;
export default function LdProgressiveImage() {
return (
<>
);
}
```
## Prompt for AI assistants
Paste this into ChatGPT, Claude, Cursor, v0 or Lovable to adapt the block to your stack (Tailwind, Vue, Svelte…):
````text
I want to add the “Progressive image loader” block (Loaders) from AIMRAN Library to my project.
## What it is
A landscape shows up first in chunky pixels, then finer ones and finally sharp, like a photo on a slow connection.
## Chosen settings
- Main color: #ff7b39
- Secondary color: #2a6f97
- Size: 16px (from 12 to 24px)
- Speed: 1x (from 0.5 to 2x)
## What I need
1. Add it to my project with the same look and animation as the reference code: same sizes, colours, radii, shadows, timings and easing.
2. It is built with plain HTML and CSS (the reference wraps it in a React component with its CSS). If my project uses something else (Vue, Svelte, Astro, plain HTML…), translate it without losing any behaviour. If I use Tailwind, turn the styles into classes; if not, keep the CSS in its own file.
3. Expose the settings above as props (or CSS variables) with those values as defaults.
4. Make it work well on phones: nothing that depends only on hover, touch targets of at least 44 px and no overflow on 320 px screens.
5. Make it look right in light and dark mode.
6. Keep it accessible: semantic HTML, roles and aria-* where needed, visible focus and keyboard support.
7. Respect prefers-reduced-motion: with reduced motion, no big animations but the same end result.
## Reference code
```tsx
import type { CSSProperties } from "react";
const css = `
.uvq10-pix {
font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
font-size: var(--s);
color: var(--fg);
-webkit-tap-highlight-color: transparent;
position: relative;
}
.uvq10-pix .sr {
position: absolute;
width: 1px;
height: 1px;
overflow: hidden;
clip: rect(0 0 0 0);
white-space: nowrap;
}
.uvq10-pix .im {
position: relative;
width: 10.5em;
height: 7em;
border-radius: .6em;
overflow: hidden;
background: color-mix(in srgb,var(--fg) 10%,var(--bg));
box-shadow: 0 0 0 1px color-mix(in srgb,var(--fg) 10%,transparent),0 1em 1.6em -1em rgba(0,0,0,.5);
}
.uvq10-pix svg {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
display: block;
}
.uvq10-pix .px {
shape-rendering: crispEdges;
}
.uvq10-pix .l0 {
animation: uvq10-pix-0 calc(4.4s / var(--k)) steps(1) infinite;
}
.uvq10-pix .l1 {
animation: uvq10-pix-1 calc(4.4s / var(--k)) steps(1) infinite;
}
.uvq10-pix .vc {
animation: uvq10-pix-2 calc(4.4s / var(--k)) infinite;
}
.uvq10-pix .pg {
position: absolute;
left: 0;
bottom: 0;
height: .22em;
width: 100%;
transform-origin: 0 50%;
background: #fff;
mix-blend-mode: difference;
animation: uvq10-pix-p calc(4.4s / var(--k)) cubic-bezier(.25,.1,.25,1) infinite;
}
.uvq10-pix .p0 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 20%,var(--c2)) 50%,#fff);
}
.uvq10-pix .p1 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 40%,var(--c2)) 50%,#fff);
}
.uvq10-pix .p2 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 57%,var(--c2)) 70%,#fff);
}
.uvq10-pix .p3 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 50%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p4 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 50%,var(--c2)) 60%,color-mix(in oklab,#fff 75%,#000));
}
.uvq10-pix .p5 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 83%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p6 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 17%,var(--c2)) 60%,#000);
}
.uvq10-pix .p7 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 60%,var(--c2)) 50%,#000);
}
.uvq10-pix .p8 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 33%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p9 {
fill: color-mix(in oklab,var(--c1) 60%,#fff);
}
.uvq10-pix .p10 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 67%,var(--c2)) 60%,#fff);
}
.uvq10-pix .p11 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 43%,var(--c2)) 70%,color-mix(in oklab,#fff 67%,#000));
}
.uvq10-pix .p12 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 17%,var(--c2)) 60%,color-mix(in oklab,#fff 25%,#000));
}
.uvq10-pix .p13 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 50%,var(--c2)) 60%,color-mix(in oklab,#fff 50%,#000));
}
.uvq10-pix .p14 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 29%,var(--c2)) 70%,color-mix(in oklab,#fff 33%,#000));
}
.uvq10-pix .p15 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 40%,var(--c2)) 50%,#000);
}
.uvq10-pix .p16 {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 33%,var(--c2)) 60%,#000);
}
.uvq10-pix .s0 {
stop-color: color-mix(in oklab,var(--c2) 50%,#fff);
}
.uvq10-pix .s1 {
stop-color: color-mix(in oklab,color-mix(in oklab,var(--c1) 79%,var(--c2)) 70%,#fff);
}
.uvq10-pix .sun {
fill: color-mix(in oklab,var(--c1) 60%,#fff);
}
.uvq10-pix .far {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 8%,var(--c2)) 60%,#000);
}
.uvq10-pix .near {
fill: color-mix(in oklab,color-mix(in oklab,var(--c1) 60%,var(--c2)) 50%,#000);
}
@keyframes uvq10-pix-0 {
0% {
opacity: 0;
}
8%,100% {
opacity: 1;
}
}
@keyframes uvq10-pix-1 {
0% {
opacity: 0;
}
30%,100% {
opacity: 1;
}
}
@keyframes uvq10-pix-2 {
0%,54% {
opacity: 0;
filter: blur(6px);
}
56% {
opacity: 1;
filter: blur(5px);
}
76%,100% {
opacity: 1;
filter: blur(0);
}
}
@keyframes uvq10-pix-p {
0% {
transform: scaleX(0);
opacity: 1;
}
8% {
transform: scaleX(.2);
}
30% {
transform: scaleX(.5);
}
56% {
transform: scaleX(.8);
}
76% {
transform: scaleX(1);
opacity: 1;
}
86%,100% {
transform: scaleX(1);
opacity: 0;
}
}
@media (prefers-reduced-motion:reduce) {
.uvq10-pix,.uvq10-pix *,.uvq10-pix *::before,.uvq10-pix *::after {
animation-duration: .01ms!important;
animation-iteration-count: 1!important;
transition-duration: .01ms!important;
}
}
`;
export default function LdProgressiveImage() {
return (
<>
);
}
```
Give me the complete final code, ready to paste, and tell me in one line where to put it in my project.
````