Anyone seriously considering you will probably look at both documents, sometimes minutes apart. When the two tell slightly different stories, it is the difference that gets remembered.
Why recruiters cross-check
Comparing a resume with a profile is a quick, normal part of screening. Recruiters use it to confirm job titles, employers and dates, and to see whether the person in front of them is the person described on paper. Small mismatches are common and usually innocent: a title shortened here, a month rounded there. Bigger ones cause real doubt. A qualification that appears on one document and not the other, dates that do not overlap, or a senior title in one place and a junior one elsewhere will prompt questions you did not need to create. Consistency does not make you more qualified. It makes you easier to trust.
The headline and about section
Your profile headline and your resume summary should be built from the same facts, even if the wording differs to suit each place. If your resume says you are an accounts assistant with three years of experience in a small practice, your headline should not call you a finance specialist, and your about section should not claim a qualification you are still studying for. Write both from one source list: current title or target role, main skills, and the strongest piece of evidence you have. Update that list first when something changes, then update both documents from it. That order prevents most drift.
Dates, titles and qualifications
Work through the factual skeleton of both documents side by side. Employers, job titles, start and finish dates, qualifications and certifications should agree exactly, because these are the items that get checked against references and certificates later. Where your employer used an internal title that nobody outside would recognise, it is reasonable to add the commonly understood version, but keep it truthful and be ready to explain the difference. End dates deserve care too. A role shown as current on your profile and finished on your resume is a small thing, yet it is exactly the kind of detail that makes a reader pause.
Keep both documents current together
Most mismatches creep in through timing. Someone updates their resume for an application, then forgets the profile still shows the old role, the old skills and an out of date summary. Build a simple habit instead: whenever you change one document, open the other and check it in the same sitting. Add new qualifications, remove tools you no longer use, and make sure your target roles point in the same direction on both. Your profile can hold more colour and background than a two page resume allows, and that is fine. It should read like the same person on a different day, not like two different applicants.
Try it in the tools
Put this into practice with the free resume review or the resume builder. Both run in your browser and keep your information on your own device.
This is general guidance from our own experience of the application process, not an employer policy or a hiring guarantee. Follow the requirements in your actual application.