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nktkas/bmpFast and lightweight BMP image encoder/decoder.
This package works with Cloudflare Workers, Node.js, Deno, Bun, Browsers
JSR Score
100%
Published
2 days ago (1.3.0)
BMP Encoder/Decoder
Fast and lightweight BMP image encoder/decoder.
Works with:
Usage
Decode
Supported BMP formats:
- Any header types: BITMAPINFOHEADER, BITMAPV4HEADER, BITMAPV5HEADER, etc.
- Any compression methods: BI_RGB, BI_RLE8, BI_RLE4, BI_BITFIELDS, etc.
- Any bits per pixel: 1, 4, 8, 16, 24, 32
- Top-down and bottom-up images
Full list of supported BMP formats here
Basic usage
import { decode } from "@nktkas/bmp"; // A minimal 1x1 pixel 24-bit BMP file const file = new Uint8Array([ // BMP File Header (14 bytes) 0x42, 0x4D, 0x3A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x00, // DIB Header (BITMAPINFOHEADER, 40 bytes) 0x28, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Pixel data (BGR + padding) - 1x1 black pixel 0x00, 0x00, 0x00, 0x00 ]); const raw = decode(bmp); // { width: 1, height: 1, channels: 3, data: Uint8Array(3) [0, 0, 0] } // ^^^ // may be 1 (grayscale), 3 (RGB), or 4 (RGBA)
BI_JPEG / BI_PNG compressed images
These formats use external compression (JPEG/PNG) for the pixel data, which is not directly supported by the BMP format. To work with these images, you need to extract the compressed data and decode it with a suitable library.
import { extractCompressedData } from "@nktkas/bmp"; // A minimal 1x1 pixel BMP file with embedded PNG data const bmp = new Uint8Array([ // BMP File Header (14 bytes) 0x42, 0x4D, 0x7B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x00, // DIB Header (BITMAPINFOHEADER, 40 bytes) 0x28, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x45, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Embedded PNG data (69 bytes) - 1x1 black pixel // PNG signature 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, // IHDR chunk 0x00, 0x00, 0x00, 0x0D, 0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x3A, 0x7E, 0x9B, 0x55, // IDAT chunk 0x00, 0x00, 0x00, 0x0C, 0x49, 0x44, 0x41, 0x54, 0x08, 0x1D, 0x01, 0x02, 0x00, 0xFD, 0xFF, 0x00, 0x00, 0xE5, 0xE3, 0x00, 0x09, 0x74, 0xC6, 0xD6, 0xC2, // IEND chunk 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4E, 0x44, 0xAE, 0x42, 0x60, 0x82 ]); const extracted = extractCompressedData(bmp); // { width: 1, height: 1, compression: 5, data: Uint8Array(69) [...] } // ^^^ // may be 4 (BI_JPEG) or 5 (BI_PNG) or others compressions // Then you can decode it with any JPEG/PNG decoder import sharp from "sharp"; const raw = await sharp(extracted.data).raw().toBuffer();
Encode
Supported encoding formats:
- Bits per pixel: 1, 4, 8, 16, 24, 32
- Compression: BI_RGB, BI_RLE8, BI_RLE4, BI_BITFIELDS, BI_ALPHABITFIELDS
- Header types: BITMAPINFOHEADER, BITMAPV4HEADER, BITMAPV5HEADER
- Orientation: Top-down and bottom-up
Basic usage
import { encode } from "@nktkas/bmp"; // A minimal raw image const raw = { width: 2, height: 2, channels: 3, // 1 (grayscale), 3 (RGB), or 4 (RGBA) data: new Uint8Array([ // 2x2 black and white pixels 0, 0, 0, 255, 255, 255, 0, 0, 0, 255, 255, 255, ]), } as const; // Encode to 24-bit BMP (automatic detection of best settings based on raw data) const bmp = encode(raw); // Returns Uint8Array with complete BMP file
Advanced options
interface EncodeOptions { /** * Bits per pixel (1, 4, 8, 16, 24, or 32). * * Default: Auto-detected from input channels * - channels=1 (grayscale) → 8-bit * - channels=3 (RGB) → 24-bit * - channels=4 (RGBA) → 32-bit */ bitsPerPixel?: 1 | 4 | 8 | 16 | 24 | 32; /** * BMP compression method identifiers. * - 0 (BI_RGB) - No compression. Raw pixel data. * - 1 (BI_RLE8) - 8-bit run-length encoding. 256-color indexed only. * - 2 (BI_RLE4) - 4-bit run-length encoding. 16-color indexed only. * - 3 (BI_BITFIELDS) - Uncompressed with custom RGB bit masks. * - 6 (BI_ALPHABITFIELDS) - Uncompressed with custom RGBA bit masks. * * Default: 0 (BI_RGB) */ compression?: CompressionType; /** * BMP header format type. Determines header size and features. * - `BITMAPINFOHEADER`: 40 bytes. Basic format. * - `BITMAPV4HEADER`: 108 bytes. Embedded masks, color space, gamma support. * - `BITMAPV5HEADER`: 124 bytes. Adds ICC profiles and rendering intent. * * Default: `BITMAPINFOHEADER` */ headerType?: HeaderType; /** * BMP image orientation. * - `false` - bottom-up (standard BMP) * - `true` - top-down * * Default: false */ topDown?: boolean; /** * Color palette for indexed formats (1, 4, 8-bit). * * If not provided, palette will be generated automatically. */ palette?: RGBQUAD[]; /** * Bitfield masks for BI_BITFIELDS/BI_ALPHABITFIELDS compression. * * If not provided, default masks will be used: * - 16-bit - RGB565 * - 32-bit - BGRA */ bitfields?: BitfieldMasks; }
Benchmarks
Decode
# BI_RGB (127x64) 1bit x 64,590 ops/sec @ 15.5µs/op 4bit x 56,930 ops/sec @ 17.6µs/op 8bit x 69,980 ops/sec @ 14.3µs/op 16bit x 56,710 ops/sec @ 17.6µs/op 24bit x 68,570 ops/sec @ 14.6µs/op 32bit x 59,350 ops/sec @ 16.8µs/op # BI_RLE (127x64) 4bit x 65,920 ops/sec @ 15.2µs/op 8bit x 54,440 ops/sec @ 18.4µs/op # BI_BITFIELDS (127x64) 16bit x 56,330 ops/sec @ 17.8µs/op 32bit x 50,920 ops/sec @ 19.6µs/op
Complete list and comparison
Run command: deno bench --allow-read ./tests/decode
CPU | AMD Ryzen 9 9950X3D 16-Core Processor Runtime | Deno 2.5.4 (x86_64-pc-windows-msvc) | benchmark | time/iter (avg) | iter/s | (min … max) | p75 | p99 | p995 | | -------------- | --------------- | ------------- | --------------------- | -------- | -------- | -------- | group BI_RGB: 1 bit | @nktkas/bmp | 15.5 µs | 64,590 | ( 6.3 µs … 3.5 ms) | 12.5 µs | 95.4 µs | 124.8 µs | | @cwasm/nsbmp | 28.3 µs | 35,350 | ( 16.7 µs … 2.2 ms) | 24.4 µs | 112.5 µs | 191.3 µs | | bmp-js | 25.2 µs | 39,720 | ( 14.0 µs … 4.6 ms) | 25.4 µs | 89.9 µs | 149.7 µs | | bmpimagejs | 25.0 µs | 39,990 | ( 13.6 µs … 4.7 ms) | 24.9 µs | 62.0 µs | 108.2 µs | summary @nktkas/bmp 1.61x faster than bmpimagejs 1.63x faster than bmp-js 1.83x faster than @cwasm/nsbmp group BI_RGB: 1 bit (grayscale) | @nktkas/bmp | 4.8 µs | 207,300 | ( 4.0 µs … 11.4 µs) | 4.3 µs | 11.4 µs | 11.4 µs | | @cwasm/nsbmp | 25.1 µs | 39,870 | ( 16.3 µs … 5.5 ms) | 24.1 µs | 57.9 µs | 108.3 µs | | bmp-js | 22.7 µs | 44,090 | ( 14.1 µs … 4.5 ms) | 21.8 µs | 64.2 µs | 107.4 µs | | bmpimagejs | 24.3 µs | 41,080 | ( 14.3 µs … 5.4 ms) | 24.6 µs | 53.0 µs | 102.4 µs | summary @nktkas/bmp 4.70x faster than bmp-js 5.05x faster than bmpimagejs 5.20x faster than @cwasm/nsbmp group BI_RGB: 4 bit | @nktkas/bmp | 17.6 µs | 56,930 | ( 8.7 µs … 3.5 ms) | 14.9 µs | 86.0 µs | 111.6 µs | | @cwasm/nsbmp | 27.8 µs | 35,990 | ( 16.3 µs … 3.4 ms) | 23.9 µs | 97.4 µs | 128.2 µs | | bmp-js | 35.4 µs | 28,270 | ( 24.2 µs … 4.2 ms) | 32.5 µs | 107.2 µs | 147.1 µs | | bmpimagejs | 23.8 µs | 41,980 | ( 14.0 µs … 3.8 ms) | 21.9 µs | 90.1 µs | 116.0 µs | summary @nktkas/bmp 1.36x faster than bmpimagejs 1.58x faster than @cwasm/nsbmp 2.01x faster than bmp-js group BI_RGB: 4 bit (grayscale) | @nktkas/bmp | 7.1 µs | 140,800 | ( 5.1 µs … 2.5 ms) | 6.6 µs | 33.7 µs | 38.5 µs | | @cwasm/nsbmp | 26.5 µs | 37,800 | ( 15.5 µs … 3.6 ms) | 23.8 µs | 93.6 µs | 122.1 µs | | bmp-js | 35.3 µs | 28,310 | ( 24.4 µs … 4.3 ms) | 32.4 µs | 105.7 µs | 140.3 µs | | bmpimagejs | 26.3 µs | 38,050 | ( 14.1 µs … 77.2 ms) | 22.0 µs | 80.0 µs | 108.5 µs | summary @nktkas/bmp 3.70x faster than bmpimagejs 3.73x faster than @cwasm/nsbmp 4.97x faster than bmp-js group BI_RGB: 8 bit | @nktkas/bmp | 14.3 µs | 69,980 | ( 11.1 µs … 1.8 ms) | 15.4 µs | 27.2 µs | 33.7 µs | | @cwasm/nsbmp | 25.9 µs | 38,580 | ( 15.6 µs … 3.9 ms) | 23.4 µs | 83.8 µs | 109.3 µs | | fast-bmp | 17.7 µs | 56,340 | ( 14.5 µs … 2.0 ms) | 16.8 µs | 44.6 µs | 53.1 µs | | bmp-js | 45.9 µs | 21,770 | ( 34.4 µs … 4.4 ms) | 44.5 µs | 120.1 µs | 158.1 µs | | bmpimagejs | 25.7 µs | 38,860 | ( 16.1 µs … 4.7 ms) | 24.5 µs | 81.2 µs | 108.9 µs | summary @nktkas/bmp 1.24x faster than fast-bmp 1.80x faster than bmpimagejs 1.81x faster than @cwasm/nsbmp 3.21x faster than bmp-js group BI_RGB: 8 bit (grayscale) | @nktkas/bmp | 9.1 µs | 110,000 | ( 7.8 µs … 232.0 µs) | 8.9 µs | 15.9 µs | 20.3 µs | | @cwasm/nsbmp | 23.6 µs | 42,290 | ( 15.6 µs … 4.6 ms) | 23.2 µs | 70.1 µs | 103.6 µs | | fast-bmp | 17.5 µs | 57,250 | ( 14.0 µs … 1.6 ms) | 16.5 µs | 44.1 µs | 51.9 µs | | bmp-js | 44.3 µs | 22,570 | ( 34.5 µs … 4.2 ms) | 44.2 µs | 114.1 µs | 157.6 µs | | bmpimagejs | 23.6 µs | 42,300 | ( 16.1 µs … 4.3 ms) | 24.2 µs | 88.2 µs | 107.1 µs | summary @nktkas/bmp 1.92x faster than fast-bmp 2.60x faster than bmpimagejs 2.60x faster than @cwasm/nsbmp 4.87x faster than bmp-js group BI_RGB: 16 bit | @nktkas/bmp | 17.6 µs | 56,710 | ( 10.9 µs … 2.7 ms) | 16.9 µs | 78.4 µs | 103.0 µs | | @cwasm/nsbmp | 18.0 µs | 55,550 | ( 11.0 µs … 4.6 ms) | 18.5 µs | 78.5 µs | 104.5 µs | | bmp-ts | 115.0 µs | 8,695 | ( 92.4 µs … 3.2 ms) | 113.0 µs | 213.5 µs | 246.2 µs | | bmp-js | 28.0 µs | 35,690 | ( 15.1 µs … 3.4 ms) | 27.2 µs | 117.8 µs | 163.0 µs | | bmpimagejs | 19.6 µs | 51,010 | ( 11.7 µs … 4.0 ms) | 19.5 µs | 73.2 µs | 102.1 µs | summary @nktkas/bmp 1.02x faster than @cwasm/nsbmp 1.11x faster than bmpimagejs 1.59x faster than bmp-js 6.52x faster than bmp-ts group BI_RGB: 24 bit | @nktkas/bmp | 14.6 µs | 68,570 | ( 8.3 µs … 3.0 ms) | 14.5 µs | 79.1 µs | 99.8 µs | | @cwasm/nsbmp | 15.0 µs | 66,520 | ( 8.7 µs … 3.9 ms) | 16.4 µs | 82.0 µs | 102.4 µs | | fast-bmp | 35.5 µs | 28,160 | ( 27.4 µs … 3.1 ms) | 34.8 µs | 102.3 µs | 120.0 µs | | bmp-js | 27.9 µs | 35,800 | ( 16.2 µs … 3.1 ms) | 29.4 µs | 101.9 µs | 145.1 µs | | bmpimagejs | 16.6 µs | 60,240 | ( 10.2 µs … 3.8 ms) | 17.8 µs | 74.7 µs | 100.0 µs | summary @nktkas/bmp 1.03x faster than @cwasm/nsbmp 1.14x faster than bmpimagejs 1.92x faster than bmp-js 2.44x faster than fast-bmp group BI_RGB: 32 bit | @nktkas/bmp | 16.8 µs | 59,350 | ( 10.5 µs … 3.4 ms) | 16.6 µs | 88.2 µs | 102.9 µs | | @cwasm/nsbmp | 17.8 µs | 56,270 | ( 11.3 µs … 3.7 ms) | 18.8 µs | 83.2 µs | 103.3 µs | | bmp-ts | 116.8 µs | 8,560 | ( 98.6 µs … 5.4 ms) | 116.3 µs | 222.5 µs | 429.7 µs | | bmp-js | 53.0 µs | 18,860 | ( 42.5 µs … 5.3 ms) | 57.3 µs | 113.2 µs | 158.7 µs | | bmpimagejs | 17.5 µs | 57,030 | ( 12.5 µs … 4.8 ms) | 19.8 µs | 45.2 µs | 70.1 µs | summary @nktkas/bmp 1.04x faster than bmpimagejs 1.05x faster than @cwasm/nsbmp 3.15x faster than bmp-js 6.93x faster than bmp-ts group BI_RLE: 4 bit | @nktkas/bmp | 15.2 µs | 65,920 | ( 9.3 µs … 3.6 ms) | 15.2 µs | 64.2 µs | 98.4 µs | | @cwasm/nsbmp | 16.6 µs | 60,060 | ( 9.7 µs … 5.0 ms) | 18.1 µs | 61.3 µs | 98.5 µs | | bmp-js | 57.1 µs | 17,530 | ( 48.1 µs … 5.1 ms) | 56.8 µs | 116.9 µs | 147.1 µs | | bmpimagejs | 20.3 µs | 49,320 | ( 14.4 µs … 6.9 ms) | 22.1 µs | 46.2 µs | 70.2 µs | summary @nktkas/bmp 1.10x faster than @cwasm/nsbmp 1.34x faster than bmpimagejs 3.76x faster than bmp-js group BI_RLE: 8 bit | @nktkas/bmp | 18.4 µs | 54,440 | ( 11.1 µs … 2.9 ms) | 17.3 µs | 51.1 µs | 67.4 µs | | @cwasm/nsbmp | 22.4 µs | 44,620 | ( 10.9 µs … 1.5 ms) | 18.8 µs | 119.1 µs | 181.2 µs | | bmp-js | 56.3 µs | 17,750 | ( 38.7 µs … 4.5 ms) | 52.3 µs | 98.0 µs | 129.0 µs | | bmpimagejs | 26.4 µs | 37,900 | ( 13.8 µs … 48.5 ms) | 22.0 µs | 87.2 µs | 139.4 µs | summary @nktkas/bmp 1.22x faster than @cwasm/nsbmp 1.44x faster than bmpimagejs 3.07x faster than bmp-js group BI_BITFIELDS: 16 bit | @nktkas/bmp | 17.8 µs | 56,330 | ( 13.9 µs … 2.8 ms) | 19.4 µs | 40.9 µs | 82.8 µs | | @cwasm/nsbmp | 37.9 µs | 26,370 | ( 32.3 µs … 5.6 ms) | 39.7 µs | 70.5 µs | 93.1 µs | | bmp-ts | 113.3 µs | 8,826 | ( 97.9 µs … 3.7 ms) | 113.4 µs | 217.9 µs | 244.5 µs | | bmpimagejs | 39.1 µs | 25,550 | ( 31.9 µs … 1.6 ms) | 40.6 µs | 96.7 µs | 111.9 µs | summary @nktkas/bmp 2.14x faster than @cwasm/nsbmp 2.21x faster than bmpimagejs 6.38x faster than bmp-ts group BI_BITFIELDS: 32 bit | @nktkas/bmp | 19.6 µs | 50,920 | ( 14.7 µs … 4.4 ms) | 20.7 µs | 47.3 µs | 86.8 µs | | @cwasm/nsbmp | 37.1 µs | 26,920 | ( 30.8 µs … 6.6 ms) | 38.6 µs | 73.3 µs | 95.1 µs | | bmp-ts | 114.0 µs | 8,769 | ( 99.9 µs … 6.1 ms) | 115.7 µs | 217.7 µs | 345.2 µs | | bmpimagejs | 37.8 µs | 26,420 | ( 30.8 µs … 2.3 ms) | 39.9 µs | 67.6 µs | 83.2 µs | summary @nktkas/bmp 1.89x faster than @cwasm/nsbmp 1.93x faster than bmpimagejs 5.81x faster than bmp-ts
If there's a library you'd like added to the benchmarks, please open an issue.
Encode
# BI_RGB (127x64) 1bit x 9,488 ops/sec @ 105.4µs/op 4bit x 3,677 ops/sec @ 271.9µs/op 8bit x 5,847 ops/sec @ 171.0µs/op 16bit x 27,340 ops/sec @ 36.6µs/op 24bit x 31,200 ops/sec @ 32.1µs/op 32bit x 27,690 ops/sec @ 36.1µs/op # BI_RLE (127x64) 4bit x 3,591 ops/sec @ 278.5µs/op 8bit x 5,971 ops/sec @ 167.5µs/op # BI_BITFIELDS (127x64) 16bit x 32,090 ops/sec @ 31.2µs/op 32bit x 29,110 ops/sec @ 34.4µs/op
Complete list and comparison
Run command: deno bench --allow-read ./tests/encode
CPU | AMD Ryzen 9 9950X3D 16-Core Processor Runtime | Deno 2.5.6 (x86_64-pc-windows-msvc) | benchmark | time/iter (avg) | iter/s | (min … max) | p75 | p99 | p995 | | ------------- | --------------- | ------------- | --------------------- | -------- | -------- | -------- | group BI_RGB: 1 bit | @nktkas/bmp | 105.4 µs | 9,488 | ( 94.3 µs … 3.7 ms) | 102.4 µs | 159.1 µs | 183.7 µs | group BI_RGB: 1 bit (grayscale) | @nktkas/bmp | 20.6 µs | 48,580 | ( 14.9 µs … 6.1 ms) | 17.6 µs | 46.8 µs | 59.3 µs | group BI_RGB: 4 bit | @nktkas/bmp | 271.9 µs | 3,677 | (261.6 µs … 1.2 ms) | 270.1 µs | 309.2 µs | 326.9 µs | group BI_RGB: 4 bit (grayscale) | @nktkas/bmp | 24.4 µs | 41,070 | ( 16.5 µs … 5.5 ms) | 21.8 µs | 62.3 µs | 76.0 µs | group BI_RGB: 8 bit | @nktkas/bmp | 171.0 µs | 5,847 | (155.9 µs … 443.2 µs) | 169.1 µs | 278.7 µs | 301.4 µs | group BI_RGB: 8 bit (grayscale) | @nktkas/bmp | 23.7 µs | 42,150 | ( 15.5 µs … 139.3 µs) | 23.1 µs | 61.1 µs | 70.1 µs | | fast-bmp | 46.4 µs | 21,570 | ( 36.2 µs … 2.6 ms) | 44.9 µs | 92.0 µs | 118.2 µs | summary @nktkas/bmp 1.95x faster than fast-bmp group BI_RGB: 16 bit | @nktkas/bmp | 36.6 µs | 27,340 | ( 22.4 µs … 3.4 ms) | 34.3 µs | 128.7 µs | 184.6 µs | group BI_RGB: 24 bit | @nktkas/bmp | 32.1 µs | 31,200 | ( 19.4 µs … 3.1 ms) | 34.2 µs | 97.5 µs | 136.3 µs | | fast-bmp | 84.8 µs | 11,790 | ( 72.8 µs … 1.3 ms) | 89.2 µs | 163.8 µs | 234.5 µs | summary @nktkas/bmp 2.65x faster than fast-bmp group BI_RGB: 32 bit | @nktkas/bmp | 36.1 µs | 27,690 | ( 22.9 µs … 3.4 ms) | 39.7 µs | 104.7 µs | 134.4 µs | group BI_RLE: 4 bit | @nktkas/bmp | 278.5 µs | 3,591 | (261.0 µs … 1.1 ms) | 278.6 µs | 332.7 µs | 352.4 µs | group BI_RLE: 8 bit | @nktkas/bmp | 167.5 µs | 5,971 | (157.3 µs … 623.6 µs) | 165.1 µs | 263.7 µs | 281.9 µs | group BI_BITFIELDS: 16 bit | @nktkas/bmp | 31.2 µs | 32,090 | ( 24.9 µs … 3.1 ms) | 30.3 µs | 74.3 µs | 107.8 µs | group BI_BITFIELDS: 32 bit | @nktkas/bmp | 34.4 µs | 29,110 | ( 26.5 µs … 3.6 ms) | 30.7 µs | 91.8 µs | 134.1 µs |
If there's a library you'd like added to the benchmarks, please open an issue.
Built and signed on
GitHub Actions
Add Package
deno add jsr:@nktkas/bmp
Import symbol
import * as bmp from "@nktkas/bmp";
Import directly with a jsr specifier
import * as bmp from "jsr:@nktkas/bmp";
Add Package
pnpm i jsr:@nktkas/bmp
pnpm dlx jsr add @nktkas/bmp
Import symbol
import * as bmp from "@nktkas/bmp";
Add Package
yarn add jsr:@nktkas/bmp
yarn dlx jsr add @nktkas/bmp
Import symbol
import * as bmp from "@nktkas/bmp";
Add Package
vlt install jsr:@nktkas/bmp
Import symbol
import * as bmp from "@nktkas/bmp";
Add Package
npx jsr add @nktkas/bmp
Import symbol
import * as bmp from "@nktkas/bmp";
Add Package
bunx jsr add @nktkas/bmp
Import symbol
import * as bmp from "@nktkas/bmp";