Convert multiple PNG to GIF in JavaScript

High-speed Node.js library for merging PNG files into GIF

Fast and efficient Node.js library to combine multiple PNG files into GIF. Try it online for free!

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Convert PNG to GIF in JavaScript

Modern JavaScript library allows Node.js via .NET developers to convert PNG to GIF image format with a few lines of code. PNG image conversion engine analyses the original graphical content, and exports the combined picture to GIF format.

Use JavaScript to convert PNG to GIF image format with maximum flexibility and speed. Run online live demo and check the highest GIF image quality right in a browser. PNG Conversion API supports a bunch of useful options.

Merge PNG to GIF in JavaScript

To convert several PNG to GIF just use JavaScript library that handles all low-level details.

Convert multiple PNG images and save the result as a single GIF image. If you develop code in JavaScript, image format conversion will be simpler than it sounds. See JavaScript example that iterates through image files and combines them into GIF:

Code example in JavaScript to combine multiple PNG to GIF
Upload a file you want to merge
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Upload a file you want to merge
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npm install @aspose/words
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const aw = require('@aspose/words');

var fileNames = [ "Input1.png", "Input2.png" ]

var doc = new aw.Document()
var builder = new aw.DocumentBuilder(doc)

shapes = fileNames.map(fileName => builder.insertImage(fileName))

// Calculate the maximum width and height and update page settings 
// to crop the document to fit the size of the pictures.
pageSetup = builder.pageSetup
pageSetup.pageWidth = Math.max(...shapes.map(shape => shape.width));
pageSetup.pageHeight = shapes.reduce((sum, shape) => sum + shape.height, 0);
pageSetup.topMargin = 0
pageSetup.leftMargin = 0
pageSetup.bottomMargin = 0
pageSetup.rightMargin = 0

doc.save("Output.gif")
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How to convert several PNG into GIF

  1. Install Aspose.Words for Node.js via .NET.
  2. Add a library reference (import the library) to your JavaScript project.
  3. Open the source PNG file in JavaScript.
  4. Convert several PNG files into GIF in a few seconds.
  5. Call the appendDocument() method, passing an output filename with GIF extension.
  6. Get the result of conversion PNG into GIF.

JavaScript library to convert several PNG into GIF

We host our Node.js via .Net packages in NPM repositories. Please follow the step-by-step instructions on how to install "Aspose.Words for Node.js via .NET" to your developer environment.

System Requirements

This package is compatible with Node.js 14.17.0 or higher.

Other Supported PNG Merge operations

You can merge PNG to many other file formats:

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