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If the data is Base64-encoded, then the data part may contain only valid Base64 characters. [7] Note that Base64-encoded data: URIs use the standard Base64 character set (with '+' and '/' as characters 62 and 63) rather than the so-called "URL-safe Base64" character set. Examples of data URIs showing most of the features are:
Base64 is particularly prevalent on the World Wide Web [1] where one of its uses is the ability to embed image files or other binary assets inside textual assets such as HTML and CSS files. [2] Base64 is also widely used for sending e-mail attachments, because SMTP – in its original form – was designed to transport 7-bit ASCII characters ...
A Base64-encoded binary MD5 sum of the content of the response: Content-MD5: Q2hlY2sgSW50ZWdyaXR5IQ== Obsolete [15] RFC 1544, 1864, 4021: Content-Range: Where in a full body message this partial message belongs: Content-Range: bytes 21010-47021/47022: Permanent RFC 9110: Content-Type: The MIME type of this content: Content-Type: text/html ...
The data URI scheme offers an alternative for including separate elements such as images, style-sheets and scripts in-line when serving an HTML request or saving an HTML resource for offline use. Like the embedded content within MHTML, data URIs use Base64 encoding of the external resources (which may be binary or text) to embed them in-line ...
Multipurpose Internet Mail Extensions (MIME) is a standard that extends the format of email messages to support text in character sets other than ASCII, as well as attachments of audio, video, images, and application programs. Message bodies may consist of multiple parts, and header information may be specified in non-ASCII character sets.
A binary-to-text encoding is encoding of data in plain text.More precisely, it is an encoding of binary data in a sequence of printable characters.These encodings are necessary for transmission of data when the communication channel does not allow binary data (such as email or NNTP) or is not 8-bit clean.
Alternate text is optional but recommended. See Alternate text for images for hints on writing good alternate text. To have some text to the left of an image, and then some more text below the image, then put in a single <br clear="all">. This will force following text down until the margins are free of floating images.
However, pictures are converted into BASE64 data: URLs inside the resulting HTML data, and there is no fixed width like Archive.Today . Megalodon lets the user decide whether to save the desktop or mobile version of a page, meaning the version that appears to desktop computer and laptop users, or to smartphone users.