MHT to PNG Converter

MHT (MIME HTML) is a web archive format that adheres to the IETF standard RFC 2557. It combines HTML code and external resources—such as images, Flash animations, Java applets, and audio files—into a single file using MIME multipart/related encoding. This encapsulation allows entire webpages to be saved and transported as a singular static unit rather than an HTML file accompanied by a folder of assets.

Microsoft Edge and legacy Internet Explorer provide native support for rendering MHT archives. While Google Chrome and Mozilla Firefox can process these files, they often require specific extensions or configuration flag adjustments to handle the MIME encapsulation correctly. Microsoft Word also supports parsing MHT files.

Portable Network Graphics (PNG) is a raster graphics file format that supports lossless data compression, created as a patent-free replacement for the Graphics Interchange Format (GIF). Standardized as ISO/IEC 15948:2004, PNG utilizes the DEFLATE compression algorithm (a combination of LZ77 and Huffman coding) and supports palette-based images, grayscale, and full-color non-palette-based RGB/RGBA images. A defining feature is its alpha channel support, allowing for variable transparency levels, unlike the binary transparency of GIF. It does not support animation but offers gamma correction and interlacing via the Adam7 algorithm.

PNG files possess near-universal compatibility across all major operating systems (Windows, macOS, Linux, Android, iOS) and web browsers (Chrome, Firefox, Safari) without requiring additional software. Default image viewers such as Microsoft Photos, Apple Preview, and virtually all graphics editing software including GIMP, Adobe Photoshop, and Paint.NET natively handle the format.