base64_uri: Generate the Data URI for a file

In xfun: Supporting Functions for Packages Maintained by 'Yihui Xie'

Generate the Data URI for a file

Description

Encode the file in the base64 encoding, and add the media type. The data URI can be used to embed data in HTML documents, e.g., in the src attribute of the ⁠<img />⁠ tag.

Usage

base64_uri(x, type = mime::guess_type(x))

Arguments

x	A file path.
type	The MIME type of the file, e.g., "image/png" for a PNG image file.

Value

A string of the form ⁠data:<media type>;base64,<data>⁠.

Note

This function requires the mime package to determine the MIME type of the file except for a few common MIME types.

Examples

logo = xfun:::R_logo()
img = htmltools::img(src = xfun::base64_uri(logo), alt = "R logo")
if (interactive()) htmltools::browsable(img)

xfun documentation built on Nov. 2, 2023, 6 p.m.