Drop the file to set it

Pilcrow

A proof sheet for hidden Unicode. Paste an email, a prompt, a resume, a filename — anything you cannot see gets marked in the margin. Nothing leaves this tab.

UV lamp

Specimens

Paste text

Every character is read in this tab and compared against a table of Unicode tag characters, zero-width marks, bidirectional overrides, variation selectors, invisible-operator bit encoding, and Latin lookalikes. Nothing is uploaded, stored, or counted. Prompted by Microsoft’s 2026 writeup on ASCII smuggling in spam.