WASM Runtime

When to use

Use blurkit/wasm when your target runtime does not provide ImageDecoder and OffscreenCanvas, but you still need consistent placeholder generation.

Example

import { encode } from 'blurkit/wasm'

const result = await encode('https://example.com/image.webp', {
  size: 32,
})

Inputs / Options / Behavior

• Supported inputs:
  • remote http/https URL string
  • URL
  • Blob
  • ArrayBuffer
  • Uint8Array
• Decode support: PNG, JPEG, WebP.
• Output support: PNG or JPEG data URL (via outputFormat).
• Includes encodeMany() and encodeManySettled().
• Requires blurkit-wasm-codecs to be installed in your project.

Limits / Caveats

• Local filesystem path strings are rejected.
• Decode support is intentionally limited to PNG/JPEG/WebP.
• Remote URL input still depends on network reachability and runtime fetch behavior.
• If codecs package is missing, calls throw BLURKIT_MISSING_WASM_CODECS.

Next read

• Edge Runtime
• Cloudflare Runtime
• Limits and Caveats