The user can adjust letter-spacing, line-height, and choose alternate characters prior to downloading.

The common expression '!=' is displayed as '≠', '>=' as '≥' *, while maintaining the fixed width double-space that these characters would normally take, so as to maintain text alignment.

• Many others are supported too - see site for details.

Monoid is open source meaning it's freely available to anyone.

Probably the only one that is.