Convert MHTML file to APNG via C#

Export MHTML to APNG within .NET applications without using Adobe® Acrobat Reader or any other third party applications

 

Using Aspose.Total for .NET you can easily export MHTML to APNG image within any .NET applications in two simple steps. First of all, by using Aspose.PDF for .NET , you can export MHTML to JPEG. After that, by using Aspose.Imaging for .NET Image Processing API, you can convert JPEG to APNG.

Convert MHTML file to APNG via .NET

  1. Open MHTML file using Document class
  2. Initialize JpegDevice class object and render MHTML to JPEG by using Process method
  3. Load JPEG file by using Image class
  4. Save the document to APNG format using Save method

Get Started with .NET File Automation APIs

Install from command line as nuget install Aspose.Total or install directly from Package Manager Console of Visual Studio.

Alternatively, get the offline MSI installer or DLLs in a ZIP file from downloads .

Convert MHTML File to APNG in a Single File via C#

Using the API, you can also convert MHTML file to APNG to a single image file. In order to convert all pages, you can first render your MHTML document to one TIFF file and after that you can export TIFF file to APNG. You can open the input file using Document class and create Resolution, TiffSettings, & TIFF device objects. You can get a single TIFF image using Process method of TiffDevice class. Finally, you can load TIFF file using Image class and save it to APNG format using Save method.

Convert MHTML to APNG With Watermark via C#

Using the API, you can also convert MHTML file to APNG with watermark in your APNG document. In order to add a watermark, you can first render your MHTML document to JPEG and add a watermark in it. To demonstrate the operation, you can load your converted JPEG image, add transformations using an object of Matrix class and draw a string as the watermark on the image surface using the Graphics class’ DrawString method. After adding the watermark in it, you can save the JPEG as APNG format. Below is a code example that demonstrates how to add a diagonal watermark to your document.

Convert & Rotate MHTML File to APNG via C#

Using the API, you can also rotate the output APNG image as per your needs. The Image.RotateFlip method can be used to rotate the image by 90/180/270-degrees and flip the image horizontally or vertically. You can specify the type of rotation and flip to apply to the image. In order to rotate and flip the image you can load the converted JPEG image using the factory method exposed by Image class and call the Image.RotateFlip method while specifying the appropriate RotateFlipType .

Other Conversion Options

MHTML TO DXF (Autodesk Drawing Exchange Format)
MHTML TO WMF (Windows Metafile)
MHTML TO SVGZ (Compressed Scalable Vector Graphics)
MHTML TO WMZ (Compressed Windows Metafile)
MHTML TO EMZ (Windows Compressed Enhanced Metafile)
MHTML TO IMAGE (Image Files)
MHTML TO PSD (Photoshop Document)
MHTML TO TGA (Truevision Graphics Adapter)
MHTML TO DICOM (Digital Imaging and Communications in Medicine)

MHTML What is MHTML File Format?

Files with MHTML extension represent a web page archive format that can be created by a number of different applications. The format is known as archive format because it saves the web HTML code and associated resources in a single file. These resources include anything linked to the webpage such as images, applets, animations, audio files and so on. MHTML files can be opened in a variety of applications such as Internet Explorer and Microsoft Word. Microsoft Windows uses MHTML file format for recording scenarios of problems observed during the usage of any application on Windows that raises issues. The MHTML file format encodes the page contents similar to specifications defined in message/rfc822 which is plain text email related specifications. The actual specifications of the format are as detailed by RFC 2557.

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APNG What is APNG File Format?

A file with .apng (Animated Portable Network Graphics) extension is a raster graphic format and is an unofficial extension to the Portable Network Graphic (PNG ). It comprises of multiple frames (each of PNG image) that represents an animation sequence. This gives similar visualization as a GIF file. APNG files support 24-bit images and 8-bit transparency. APNG is backward compatible with non-animated GIF files. APNG files use the same .png extension and can be opened by applications such as Mozilla Firefox, Chrome with APNG support, iMessage apps for iOS 10.

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