The Theyvora blog
Practical guides to run your business identity — invoices, signatures, branding and more.
How to write an invoice
A step-by-step guide to writing a professional invoice — what to include, how to number them, how to add tax, and how to get paid faster. Free invoice template included.
Is a typed or electronic signature legal?
Yes — electronic and typed signatures are legally valid for most business documents. Here is how e-signatures work, when they hold up, and how to sign a document online.
What to put on a business letterhead
A business letterhead should carry your logo, business name, contact details and any legal registration info. Here is exactly what to include and how to design one.
Digital business cards: the complete guide
What a digital business card is, why they beat paper, and how to create and share one with a QR code and save-to-contacts link. Make yours free.
How to choose brand colours for your business
A simple framework for picking brand colours: choose a primary, an accent and neutrals, check contrast, and apply them consistently. Generate a full palette free.
How to sign a PDF online for free
Sign a PDF in your browser in three steps — no printing or scanning. Create a signature, place it on the document, and download the signed copy free.
Electronic vs digital signature: what’s the difference?
An electronic signature shows intent to sign; a digital signature adds cryptographic proof of identity and tamper-evidence. Here is when each matters.
Professional email signature examples
What a good email signature includes, common mistakes to avoid, and how to create a branded signature with your logo. Examples plus a free maker.
How to make a logo for your business
A practical guide to creating a business logo — the types of logo, what makes one work, and how to generate a real vector logo from your name for free.
What to put on a business card
The essentials for a business card that gets used — name, role, company, one or two contact methods, and a QR code to your digital card. Make one free.