How to design a one-pager that works

A one-pager is one of the most common assets in cybersecurity marketing and one of the most consistently misused. The brief is usually "one page, everything important." The result is usually a dense, cluttered document that tries to say everything and communicates nothing.

The problem is not the format. The format is fine. The problem is the goal. When the goal is to fit everything in, the result is small type, narrow margins, dense paragraphs, and a page that looks like work to read. A reader who sees a page like that makes a quick decision: read later, which usually means never.

Legibility before everything else

If the reader cannot physically read your one-pager, nothing else matters. Legibility is not about aesthetics. It is about whether the words on the page can be decoded without effort.

The most common legibility problems in cybersecurity one-pagers are type that is too small, lines that are too long, and text placed on backgrounds with insufficient contrast.

For body copy on screen, 10pt is the absolute minimum. 11pt or 12pt is better. For print, 9pt is the minimum. If you are reducing type size to fit more content, that is a signal to cut content, not to reduce the type.

Line length affects how easily the eye can track from the end of one line to the beginning of the next. Optimal line length is 50 to 70 characters, roughly 10 to 12 words per line. If your lines are longer than that, narrow the column.

Structure the reader can see

A well-structured one-pager is one where the reader can understand the organisation of the document in five seconds, before they have read a single word. They should be able to see: there is a headline, there are three sections, there is a call to action at the bottom.

This visible structure is created by typographic hierarchy: the difference in size, weight, and spacing between different levels of information. A headline that is genuinely larger than the body copy. Subheadings that are visually distinct from the body. White space between sections that signals a break.

The most common structural failure is insufficient hierarchy. When everything is the same size, the reader cannot tell what is important. When everything is bold, nothing is bold.

A simple hierarchy for a one-pager: one headline (largest, heaviest), two or three subheadings (medium, bold), body copy (smaller, regular weight), a call to action (can match headline weight). That is four levels. That is enough.

White space is not wasted space

White space is the space on the page that contains no content: the margins, the space between paragraphs, the space between the headline and the body copy. Most in-house designers do not use enough of it.

White space serves two functions. First, it makes the content that remains easier to read by reducing visual noise. Second, it signals to the reader that the document is well-organised and worth reading. A page with generous margins and clear spacing looks considered. A page crammed to the edges looks desperate.

If you are reducing margins to fit more content, that is a signal to cut content. A one-pager with 15mm margins and readable type will communicate more effectively than a one-pager with 5mm margins and eight more bullet points.

One clear action

Every one-pager should end with a single, clear instruction. Not a list of options. Not a vague invitation to "learn more." One action: request a demo, download the full report, talk to a sales engineer.

The call to action should be visually distinct from the rest of the document. It should be easy to find if the reader has skimmed the page. It should tell the reader exactly what they will get if they take the action.

"Request a demo" is better than "contact us." "Download the full technical specification" is better than "learn more." "Talk to a sales engineer about your environment" is better than "get in touch."

A one-pager is not a place to put everything. It is a place to put the one thing that will make the reader want to take the next step. Design it around that one thing, and cut everything that does not serve it.

If you want a review of a one-pager before it goes out, we can help.