[mathias]

    The "data:" URL scheme is only useful for short values. Note that
    some applications that use URLs may impose a length limit; for
    example, URLs embedded within <A> anchors in HTML have a length limit
    determined by the SGML declaration for HTML [RFC1866]. The LITLEN
    (1024) limits the number of characters which can appear in a single
    attribute value literal, the ATTSPLEN (2100) limits the sum of all
    lengths of all attribute value specifications which appear in a tag,
    and the TAGLEN (2100) limits the overall length of a tag.

These are references to (theoretical) limitations in HTML/SGML. They are not limitations of the data URL scheme.

Also note that bytex64’s page doesn’t use a link; it just shows the data URL so you can copy and paste it. Either way, none of the above limitations apply here.

</nitpick>