The short answer
Use the space your relevant experience needs. One page is a practical starting point for many early-career applicants; two can work when there is enough useful experience. Follow explicit application instructions first.
Start with the reader's decision
The point of the resume is to help someone assess your fit for a role. A short document that hides essential experience is not automatically better than two readable pages. Two pages filled with repeated duties are not automatically better than one focused page.
Check the posting for a stated length or document requirement before applying a general rule. Academic CVs and specialized application systems can ask for something different from an ordinary private-sector resume. Use the instructions for that process rather than assuming one format covers every application.
When one page is a useful constraint
If your relevant experience consists of a degree, a few projects, and an internship or first job, one page often gives you enough room. It forces you to choose evidence rather than include every course or responsibility.
Keep the sections that help with this specific opening. A substantial project may deserve more space than an unrelated short job. Give the reader dates, context, and what you did; do not shrink the text until those details become difficult to read.
- Remove repeated bullets before reducing font size.
- Cut an objective that only says you want a job.
- Condense older or unrelated work while keeping the timeline understandable.
- Use a shorter relevant coursework list, if coursework belongs at all.
- Check for a single line spilling onto an otherwise empty second page.
When a second page earns its place
A second page can be useful when you have several relevant positions, technical projects, publications, or credentials that change the hiring decision. Keep the strongest evidence near the beginning and make the second page feel deliberate.
A reader should not need page two to learn what role you do or how to contact you. Use consistent headings and avoid splitting an entry awkwardly across pages. Export the PDF and inspect it at normal size, not just inside the editor.
Run the subtraction test
For each bullet, ask: does this add a different skill, result, or scope of work? If two bullets answer the same question, combine them. For each section, ask whether it helps with the actual job requirements.
After editing, select and copy the exported PDF text into a plain text editor. Check that the order remains understandable. This is a useful parsing check, not a guarantee about every ATS or a reason to change truthful information.
Sources and further reading
Provider and employer requirements can change. Follow the instructions for the particular application or integration.