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auspice

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Web app for visualizing pathogen evolution

www.npmjs.com/package/auspice

nextstrain/auspice

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# is-gif [![Build Status](https://travis-ci.com/sindresorhus/is-gif.svg?branch=master)](https://travis-ci.com/sindresorhus/is-gif) > Check if a Buffer/Uint8Array is a [GIF](https://en.wikipedia.org/wiki/Graphics_Interchange_Format) image ## Install ``` $ npm install is-gif ``` ## Usage ```js const readChunk = require('read-chunk'); const isGif = require('is-gif'); const buffer = readChunk.sync('unicorn.gif', 0, 3); isGif(buffer); //=> true ``` ## API ### isGif(input) #### input Type: `Buffer` `Uint8Array` It only needs the first 3 bytes. ## Related - [file-type](https://github.com/sindresorhus/file-type) - Detect the file type of a Buffer/Uint8Array ## License MIT © [Sindre Sorhus](https://sindresorhus.com)