Choosing a CV font that stays readable at a glance mostly comes down to one rule of thumb: pick whichever option reads clearly at the smallest size actually used on the page, a contact line or a date range rather than the name at the top, and treat that as the deciding test rather than which font looks most striking as a large headline. CVBuilderKit offers a small, fixed set of professional font families rather than an open list, which narrows the decision considerably, but the same small-size test still separates the fonts worth using from the fonts worth avoiding for a given design.
The choice CVBuilderKit actually offers
The font picker in the builder's design panel, under Typography, offers six families: Inter, Rubik, Archivo and Poppins, four sans-serif fonts, and Lora and Source Serif, two serif fonts. None of the six is a decorative or script font; all six are the kind of general-purpose, professional typefaces common across CV templates and body text generally, so the choice here is narrower than font choice can be elsewhere, and the deciding factor is less about avoiding an obviously unsuitable option and more about which of six reasonable choices actually reads best in your specific document. Switching between them applies to whichever template is currently active and changes the typeface only, leaving layout, colours and content untouched.
Why size matters more than style for a CV font
A CV commonly gets skimmed for a few seconds before anyone reads it properly, and most of that skim lands on small text: a contact line, a row of dates, a short line of job titles stacked one after another. A font that looks confident and clear at a large size, in the name at the top of the page, can behave quite differently once the same letterforms shrink down to the size a date range or a phone number actually renders at. Testing a font choice at its smallest actual size on the page, rather than judging it from the headline alone, catches a problem a headline-only glance would miss entirely.
A rule of thumb: test at the smallest size on the page
Before settling on a font, it is worth finding the smallest text block on the CV, commonly a contact line, a certification date, or a footnote-style detail, and checking that block specifically rather than the name or a section heading. If digits stay clearly distinguishable from each other, and letters that look similar at a glance, such as a capital I, a lowercase l and the digit 1, do not blur together at that size, the font is doing its job. If any of that starts to feel like a squint even on a good screen, it is worth trying one of the other five options and running the same small-text check again before deciding.
Serif or sans: what actually differs for a CV
A serif font like Lora or Source Serif often reads as slightly more traditional in tone, while a sans-serif font like Inter, Rubik, Archivo or Poppins often reads as cleaner and more contemporary; neither association is a hard rule, and plenty of CVs in every industry use either kind well. What differs in practice at small sizes is usually stroke consistency: a sans-serif letterform tends to keep a more even stroke width at a small size, which can help digits and similarly shaped letters stay distinct, while a serif font's finer details can compress a little more at the same size, particularly once a document is printed on an office printer rather than viewed on a bright screen. Neither difference is large enough to rule a font family out entirely; it is simply one more thing worth checking specifically at the smallest size on the page rather than assuming it will not matter.
Illustrative example: two fonts compared at CV body size
Illustrative comparison, the same contact line set in two different font choices at roughly the size a CV's contact row actually renders at: "(555) 019-2231 · jordan.lee@email.com". Set in a sans-serif option like Inter, the digits and the period separating the phone number's groups stay clearly distinct from each other at a small size, since the letterforms keep a fairly even stroke width throughout. Set in a serif option like Source Serif at the same small size, the same line can read slightly softer, with the finer serif details losing a little definition once printed rather than viewed on a bright screen, though it still remains legible. Neither version is unreadable, and the difference is genuinely modest, but it is exactly the kind of small-size comparison worth making before settling on a final choice rather than after a CV has already gone out.
Changing the font without losing anything else
Switching the font in the design panel's Typography group changes only the typeface; every other choice, layout, colours, spacing and every word of actual content, stays exactly as it was. That makes trying a few of the six options directly against your own content, rather than guessing from a short sample line, a low-cost way to settle the question, since nothing about the underlying document is at risk while comparing.
Build yours
Browse the full set of templates to see how each one pairs its default font with its layout, then open your CV in the builder and try a couple of the six font options against your own contact line and dates before deciding which one to keep.