MHT -CET Innovation
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Wikipedia
MHTML, an initialism of “MIME encapsulation of aggregate HTML documents”, is a web page archive format used to combine, in a single computer file, the HTML code and its companion resources (such as images, Flash animations, Java applets, and audio and video files) that are represented by external hyperlinks in the web page’s HTML code. The content of an MHTML file is encoded using the same techniques that were first developed for HTML email messages, using the MIME content type multipart/related. MHTML files use a .mhtml or .mht filename extension.
The first part of the file is an e-mail header. The second part is normally HTML code. Subsequent parts are additional resources identified by their original uniform resource locators (URLs) and encoded in base64 binary-to-text encoding. MHTML was proposed as an open standard, then circulated in a revised edition in 1999 as RFC 2557.
The .mhtml (Web archive) and .eml (email) filename extensions are interchangeable: either filename extension can be changed from one to the other. An .eml message can be sent by e-mail, and it can be displayed by an email client. An email message can be saved using a .mhtml or .mht filename extension and then opened for display in a web browser or for editing other programs, including word processors and text editors.
The header of an MHTML file contains metadata such as a date and time stamp, page title, the source URL, and a unique randomized boundary string for separating resources contained within the file. The boundary string is defined at the beginning and used throughout the file.
Some browsers support the MHTML format, either directly or through third-party extensions, but the process for saving a web page along with its resources as an MHTML file is not standardized. Due to this, a web page saved as an MHTML file using one browser may render differently on another.
Support for saving web pages as MHTML files was made available in the Opera 9.0 web browser. From Opera 9.50 through the rest of the Presto-based Opera product line (currently at Opera 12.16 as of 19 July 2013), the default format for saving pages is MHTML. The initial release of the new Webkit/Blink-based Opera (Opera 15) did not support MHTML, but subsequent releases (Opera 16 onwards) do.
MHTML can be enabled by typing “opera://flags#save-page-as-mhtml” at the address bar.
Creating MHTML files in Google Chrome is enabled by default in version 86.
Creating MHTML (multipart/related) files in Yandex Browser is enabled by default in version 22.7.4.960 (July 2022).
Similarly to Google Chrome, the Chromium-based Vivaldi browser can save webpages as MHTML files since the 2.3 release.
It supports both reading and writing MHTML files by toggling the “vivaldi://flags/#save-page-as-mhtml” option.
The initials MHT may refer to:
- Male hose thread, usually found on garden hoses – see Garden hose#Standards and connectors
- Manchester–Boston Regional Airport, New Hampshire, US, IATA code
- Manufacturers Hanover Trust, a (former) bank now part of JPMorgan Chase
- .mht, the file extension for an MHTML file
- Marshall Islands time zone
- Masculinizing hormone therapy, a medical treatment
- Mechanical heat treatment, one of waste treatment technology
- Menopausal hormone therapy, a medical treatment
- Multiple hypothesis tracker in radar