Data protocol URL size limitations

Question

Is there any size limitation for \"data:\" URL scheme values? I\'m interested in limitations in popular web browsers. In other words, how long can data:image/jpg;base6

Answer 1

From http://www.ietf.org/rfc/rfc2397.txt:

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 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.