The one-page rule became popular because recruiters scan quickly. That principle still matters, but strict page limits are less important than clarity and relevance. A concise two-page resume can perform better than an over-compressed one-page version that hides your strongest evidence.
In most early-career and many mid-career situations, one page is ideal. It forces prioritization, which usually improves quality. If you can show your best outcomes, core skills, and role alignment on one page with normal spacing, that is usually the best choice.
Two pages become appropriate when your experience has real complexity: leadership across teams, multiple promotions, major project portfolio, technical specialization, or long track records in regulated industries. In those cases, reducing to one page can remove the proof that makes you competitive.
If you use two pages, keep the first page high-signal. The top third should still communicate who you are, what you do, and why you match the role. The second page should deepen that case, not introduce unrelated history.
Avoid page count inflation from low-value sections. Old internships, generic objective statements, weak hobbies, and repetitive bullets are common space drains. Cut anything that does not strengthen your candidacy for the specific role.
The practical test is this: can a recruiter skim the first page in under 20 seconds and understand your fit? If yes, page count is unlikely to be your biggest risk. If no, focus on hierarchy and editing before worrying about length.