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tiff

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tiff

TIFF image decoder written entirely in JavaScript

  • 4.1.2
  • Source
  • npm
  • Socket score

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35K
decreased by-2.11%
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tiff

NPM version build status npm download

TIFF image decoder written entirely in JavaScript.

Installation

npm i tiff

Compatibility

Platform

This package is written using ES2015 features. It is natively compatible with recent web browsers and Node.js. You can transpile it with a tool like babel if you need to support more JavaScript engines.

TIFF standard

The library can currently decode greyscale and RGB images (8, 16 or 32 bits). It does not support any compression algorithm yet.

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
  • 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

FAQs

Package last updated on 06 Aug 2020

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