npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

libtiff

v1.0.5

Published

A library for working with TIFF images in JavaScript.

Downloads

18

Readme

libtiff.js

This is port of C LibTIFF to JavaScript using Emscripten and WebAssembly. I created this library because I had issues with editing complex multi-channel TIFFs with custom tags like from Photoshop using other libraries. Most of the libraries are focused on decoding image, not encoding them with different compressions.

Aim of this library is to be low-level and to work in browser and on server. For hight level image decoding you can use UTIF.js

Example of creating image:

import { TIFFImage, TagName, initRuntime } from 'libtiff'

await initRuntime({
    // optionally provide ether function to find web assembly: locateFile: () => string (URL)
    // or wasmBinary: ArrayBuffer 
})

const image = await TIFF.new()

image.writeTag(TagName.IMAGEWIDTH, 'UINT16', width)
image.writeTag(TagName.IMAGELENGTH, 'UINT16', height)
image.writeTag(TagName.SAMPLESPERPIXEL, 'UINT16', 3) // rgb
image.writeTag(TagName.BITSPERSAMPLE, 'UINT16', 8) // 8 bits per channel
image.writeTag(TagName.PLANARCONFIG, 'UINT16', 1) // RRGGBB
image.writeTag(TagName.PHOTOMETRIC, 'UINT16', 2) // RGB Image
image.writeTag(TagName.COMPRESSION, 'UINT16', 8) // LZW

image.writeImageData(exampleImageData) // exampleImageData = Uint8array of pixel data RGB

const tiffData = image.getTIFFData() // Uint8Array
Bun.write('./generated.tiff', tiffData)

Check examples directory for more examples.

Building lib

# Make sure that you have build tools 
# Make sure that you have https://emscripten.org/ installed and setup
# Clone all submodules

# Run:
make