Single-letter signatures
One bold letter, usually the first initial, used on its own as the entire mark.
A single-letter signature is the shortest mark that still counts as a signature rather than a scribble — one confident letter, usually the first initial, given enough weight and form to look intentional.
Which letters earn their place
Two letters is the usual answer, three when your name is common. Single-letter signatures work because the reader is not decoding anything: they are recognising a shape they have seen before, at the bottom of a page they already trust.
Because there is only one letter to work with, its shape carries the entire identity of the mark. A slight, consistent flourish — a small hook, a longer tail — is what separates a considered single-letter signature from a hurried check mark.
Make the short mark hard to copy
Anything short is quick to imitate, so the defence is not length but habit: an unusual join between the letters, a fixed baseline, a stroke that always ends in the same place. Consistency is the part a copyist cannot see.
This style suits internal, low-stakes approvals well. For anything that might later need to be matched against a specimen — a bank, a legal document — a single letter usually offers too little to compare against.
Where initials work best
Initials belong where space is short and repetition is high — initialling each page of a contract, marking a drawing, signing off an internal approval. For a first signature on a legal document, most people still want the full mark.
You can build any of these online: open the signature generator, draw or type your name, and place the result straight onto a PDF or Word file. Nothing is uploaded — the document never leaves your device.