Resume guide

Resume Mistakes to Avoid.

The most common resume mistakes in content, formatting, dates and contact details, with a quick fix for each and a checklist to run before you apply.

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CVHancer's ATS review, which checks a resume for contradictions in dates, titles and claims

The short answer

The mistakes that cost the most interviews are typos, a resume that isn't tailored to the job, lists of duties with no results, dates that are missing or don't add up, and layouts an ATS can't read. All of them can be fixed in an hour: proofread, match the job ad's wording, add numbers, check your dates and send a clean, text-based PDF.

Updated September 30, 2026

Content mistakes

  • Sending the same resume to every job. Adjust the summary, the skills and the order of your bullets to each ad.
  • Listing duties without results.
  • A vague summary made of adjectives.
  • Including everything you've ever done. Keep what helps for this job.
  • Leaving out the keywords the ad uses for skills you do have.
Duty vs result
Before

Responsible for customer complaints

After

Resolved about 30 customer complaints a week, 90% on first contact

Spelling and wording mistakes

Spell-check doesn't catch "manger" for "manager". Read the page aloud, or from the bottom up, and ask one other person to read it.

  • Typos and grammar errors, especially in job titles and company names.
  • Tenses that switch within one job.
  • Buzzwords: "synergy", "go-getter", "think outside the box".
  • Long sentences where a short bullet would do.

Formatting mistakes

  • Text in tables, text boxes, headers or images, which some applicant tracking systems skip.
  • Skill bars and star ratings in place of words.
  • Tiny fonts and squeezed margins to force everything onto one page.
  • Several fonts, colours and bullet styles on the same page.
  • A scanned or image PDF with no selectable text.

Date and consistency mistakes

  • Missing dates, or a mix of formats such as "March 2021" and "03/21".
  • Overlaps and gaps with no explanation.
  • Years of experience in the summary that the work history doesn't cover.
  • A headline more senior than your latest job title.
  • A resume that disagrees with your LinkedIn profile.

Contact and sending mistakes

  • An old phone number, or a typo in your email address.
  • An unprofessional email address.
  • Links that are broken or need a login.
  • A file called "resume-final-v3.pdf". Use your name and the role.
  • Another company's name left in the summary or cover letter.

Checklist

  • Proofread aloud and by a second person
  • Summary, skills and top bullets are tailored to this job
  • Most bullets show a result
  • Dates are complete, in one format, and add up
  • Text-based PDF with a clear file name and working contact details
Built into CVHancer

Let Your Resume Check Itself.

The ATS Review runs instant checks as you type, including impossible or overlapping dates, years of experience your history doesn't cover, headlines that don't match your jobs and credentials you mention but don't list. The ATS check then points out contradictions between your titles, bullets and claims. Each issue links to the exact line to fix.

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What is the most common resume mistake?

Typos and a generic resume. Both tell the reader you didn't take much care over this application.

Will one typo really get my resume rejected?

Not always, but it counts against you when the recruiter has many similar candidates, and more so in roles where attention to detail matters.

Is it a mistake to use a creative design?

Not for a direct email to a person in a creative field. For online application portals, a clean single-column layout is safer.

How can I check my resume for mistakes?

Go through the checklist on this page. CVHancer's ATS Review also checks your resume as you write and points to the line that needs fixing.

Catch Every Contradiction Before a Recruiter Does.

Build or import your resume for free. The instant checks flag dates, titles and claims that don't add up while you write.