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Plain-language articles on electronic signatures, PDF internals and signing documents without a printer.

A signed letter on a clipboard next to a pen on a wooden deskAre electronic signatures legally binding?A signature drawn on a PDF is a “simple” electronic signature. What that means under the EU's eIDAS and the US ESIGN Act, and where it is enough.6 min readUpdated August 2026A tablet and a stylus on a desk next to a cup of coffeeHow to sign a PDF without printing itA step-by-step method for signing a PDF on a phone or laptop: sizing the signature, adding initials and dates, then checking the result.7 min readUpdated July 2026Two people reviewing printed diagrams between open laptopsDrawn signature vs digital certificateOne is an image drawn on the page, the other a cryptographic seal over the file's bytes. What each adds to a PDF and which to use when.7 min readUpdated June 2026