How to use the BlurHash & LQIP Generator
- Choose a photo (or try the sample). Everything runs in your browser.
- Adjust the BlurHash detail: 4 × 3 suits most landscape photos; more components keep more shapes but make the string longer.
- Pick the LQIP width and format — 16 px WebP is usually under 1 KB.
- Copy the BlurHash string, the data URI or ready code for HTML/CSS, Next.js or React.
Three kinds of placeholder
| Placeholder | Size | Best for |
|---|---|---|
| Dominant color | 7 characters | Grids of thumbnails; the simplest option |
| BlurHash | 20–30 characters | Storing in a database or API response next to the image URL; decoded to pixels in the app |
| LQIP (base64 image) | Under 1 KB | Inlining in HTML or CSS, Next.js blurDataURL; works without JavaScript |
How BlurHash works
BlurHash describes an image with a few cosine waves — like a very low-resolution JPEG. The image is converted to linear light, multiplied by cosine patterns in each direction, and the resulting factors are quantized and written with an 83-character alphabet. Decoding draws the same waves back, giving a smooth blur with the image’s colors and rough layout. Decode it at around 32 × 32 pixels and stretch it with CSS — it is meant to be blurry.
Always set width and height (or aspect-ratio) on the image so the placeholder reserves its space and nothing jumps when the photo arrives. Compress the full image too, with the Image Compressor.
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Tools that pair well with the BlurHash & LQIP Generator
- Image Resizer — Resize a photo to exact pixel dimensions or a percentage, crop it to fill a social-media size, or fit it inside a frame with a background color — all locally in your browser.
- Image Converter — Convert any image your browser can open — PNG, JPG, WebP, AVIF, GIF, BMP or SVG — into PNG, JPG, WebP or AVIF, one file or hundreds at a time.
- Page Speed Test — Run Google Lighthouse on any URL for mobile or desktop.
- Image Color Palette Extractor — Find the color palette of any image — a photo, logo, screenshot or design.