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    tiff
    TypeScript icon, indicating that this package has built-in type declarations

    4.3.0 • Public • Published

    tiff

    NPM version build status npm download

    TIFF image decoder written entirely in JavaScript.

    Installation

    npm i tiff

    Compatibility

    TIFF standard

    The library can currently decode greyscale and RGB images (8, 16 or 32 bits). It supports LZW compression and images with an additional alpha channel.

    Extensions

    Images compressed with Zlib/deflate algorithm are also supported.

    API

    tiff.decode(data[, options])

    Decodes the file and returns TIFF IFDs.

    IFD object

    Each decoded image is stored in an IFD.

    IFD#data

    The data property is a Typed Array containing the pixel data. It is a Uint8Array for 8bit images, a Uint16Array for 16bit images and a Float32Array for 32bit images.

    Other properties of IFD
    • size - number of pixels
    • width - number of columns
    • height - number of rows
    • bitsPerSample - bit depth
    • alpha - true if the image has an additional alpha channel
    • xResolution
    • yResolution
    • resolutionUnit

    tiff.pageCount(data)

    Returns the number of IFDs (pages) in the file.

    tiff.isMultiPage(data)

    Returns true if the file has 2 or more IFDs (pages) and false if it has 1. This is slightly more efficient than calling pageCount() if all you need to know is whether the file has multiple pages or not.

    License

    MIT

    Keywords

    none

    Install

    npm i tiff

    DownloadsWeekly Downloads

    4,927

    Version

    4.3.0

    License

    MIT

    Unpacked Size

    185 kB

    Total Files

    76

    Last publish

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