Convert GIF to Searchable PDF in C#
Perform optical character recognition on GIF document and save text as GIF document using Aspose.OCR for .NET library.
Aspose.OCR for .NET
Overview
How to convert GIF to Searchable PDF using C#
Aspose.OCR for .NET is a powerful yet easy-to-use and cost-effective library for converting GIF images to Searchable PDF documents. Supporting 26 languages based on Latin, Cyrillic and Chinese, its state-of-the-art optical character recognition engine provides superior recognition speed and accuracy, while isolating you from formulas, neural networks, and other complex technical details. It allows you to add OCR functionality to your .NET applications in less than 10 lines of code.
processes scanned images or even smartphone photos in GIF format and creates GIF documents containing recognized text. To add it to your project, you just need to install the Aspose.OCR
package in your project with the following command:
Package Manager Console Command
PM> Install-Package Aspose.OCR
Steps to Convert GIF to Searchable PDF
With .NET OCR and just a few lines of code, you can create full-featured application that converts an GIF image to Searchable PDF document:
- Create an instance of AsposeOcr class
- Call AsposeOCR.RecognizeImage method
- Pass the GIF file path as parameter
- AsposeOCR.RecognizeImage returns a String or file of Searchable PDF type
System Requirements
Before running the example, make sure that .NET API compatible with NET Standard 2.0 specification is installed on your system and all external dependencies of Aspose.OCR package are referenced in your project.
- NET Standard 2.0+ compatible solution
- Aspose.OCR for .NET referenced in your project.
This sample code shows GIF to Searchable PDF .NET Conversion
// initialize an instance of AsposeOcr
AsposeOcr ocr = new AsposeOcr();
// recognize image
string riText = ocr.RecognizeImage("template.GIF");
// print text
File. File.WriteAllText("document.Searchable PDF", riText);
GIF What is GIF File Format
A GIF or Graphical Interchange Format is a type of highly compressed image. Owned by Unisys, GIF uses the LZW compression algorithm that does not degrade the image quality. For each image GIF typically allow up to 8 bits per pixel and up to 256 colours are allowed across the image. In contrast to a JPEG image, which can display up to 16 million colours and fairly touches the limits of the human eye. Back when the internet emerged, GIFs remained the best choice because they required low bandwidth and compatible for the graphics that consume solid areas of colour. An animated GIF combines numerous images or frames into a single file and displays them in a sequence to generate an animated clip or a short video. The colour limitations are up to 256 for each frame and are likely to be the least suitable for reproducing other images and photographs with colour gradient.
Read MoreSearchable PDF What is Searchable PDF File Format
Searchable PDF files retain the original scanned image for viewing, as well as OCR text in a hidden layer that can be used for full-text searches within a document or highlighting text for copy and paste operations. Full OCR conversion to PDF, not including the original image, will never retain 100% of the original formatting, especially if the document has many images or a complex layout.
Read MoreOther Supported Conversions
Using C#, one can easily convert different formats including.