Quick answer: The most common resume mistakes are typos and grammar errors, sending the same generic resume to every job, listing duties instead of results, missing keywords from the job posting, and using a design that applicant tracking systems can't read. Other frequent mistakes include an unprofessional email address, a vague objective, a resume that's too long, outdated or irrelevant experience, buzzwords without proof, inconsistent formatting, and personal details like a photo or date of birth (in the US and similar markets). Fixing these is usually quick, and it can make a big difference in how many interviews you get.
You can be a great candidate and still have a resume that quietly sabotages you. A typo in your email address means recruiters can't reach you. A two-column template means the ATS reads your job titles as gibberish. A generic summary means your best skills never get noticed.
The good news: most resume mistakes are easy to fix once you know what to look for.
Here are 20 common resume mistakes, why they hurt, and exactly how to fix each one.
Content Mistakes
1. Typos and grammar errors
Why it hurts: they make you look careless, especially if the job mentions "attention to detail."
Fix: spell-check, read it out loud, read it backward line by line, and have someone else review it. Watch for errors spell-check misses: "manger" vs. "manager," "lead" vs. "led," and "their" vs. "there."
2. Sending the same resume everywhere
Why it hurts: a generic resume doesn't clearly match any job, so it ranks lower in ATS and gets skimmed past by recruiters.
Fix: tailor your headline, summary, and top bullets for each job. See resume keywords optimization.
3. Listing duties instead of results
Why it hurts: everyone in your role had the same duties. Results show how well you did them.
Fix: use the formula action verb + task + measurable result.
Before: Responsible for social media.
After: Grew Instagram followers from 8K to 45K in 12 months, driving 30% of website traffic.
See accomplishments for your resume.
4. No numbers
Why it hurts: claims without numbers are hard to believe and easy to skim past.
Fix: add money, percentages, volume, time saved, or team size. Estimates are fine when honest ("100+ customers per day").
5. Buzzwords and clichés
Why it hurts: "results-driven team player with excellent communication skills" appears on thousands of resumes.
Fix: show traits through achievements instead of claiming them. See how to make your resume stand out.
6. A vague objective statement
Why it hurts: "Seeking a challenging position where I can grow" focuses on what you want, not what you offer.
Fix: use a two-to-three-sentence summary with your role, experience, top skills, and a result. See how to write a resume summary.
7. Overusing the same verbs
Why it hurts: "managed," "helped," and "led" in every bullet blur together.
Fix: vary your verbs. See managed synonyms, led synonyms, and helped synonyms.
8. Including irrelevant or outdated experience
Why it hurts: your 2009 summer job pushes relevant achievements down the page.
Fix: focus on the last 10–15 years and roles relevant to the job. See how far back should a resume go.
9. Exaggerating or lying
Why it hurts: background checks, reference calls, and technical interviews expose it, and it can get an offer rescinded or lead to termination later.
Fix: frame real experience in its best honest light. See is it illegal to lie on a resume.
10. Unedited AI-generated text
Why it hurts: generic AI phrasing ("spearheaded dynamic initiatives to drive synergy") sounds like everyone else's resume, and AI sometimes invents skills you don't have.
Fix: use AI for a draft, then add specific details, numbers, and your voice. See does ATS detect AI.
Formatting and Design Mistakes
11. ATS-unfriendly design
Why it hurts: tables, text boxes, columns, icons, and images can scramble your information in applicant tracking systems.
Fix: use a single-column layout with standard headings. See ATS-friendly resume templates and two-column resume.
12. Too long (or squeezed too short)
Why it hurts: a 3-page resume for a mid-level role loses attention; a one-page resume in 8 pt font is unreadable.
Fix: one page for most people with under 10 years of experience, two pages for experienced professionals. See how long should a resume be.
13. Inconsistent formatting
Why it hurts: mixed date formats, fonts, and bullet styles look sloppy.
Fix: pick one date style (e.g., "Jan 2024 – Present"), one font, one bullet style, and consistent spacing. See should bullet points have periods.
14. Hard-to-read fonts and sizes
Why it hurts: decorative fonts and tiny text make recruiters work too hard.
Fix: use Calibri, Arial, Garamond, or Helvetica at 10–12 pt. See resume font size.
15. Wrong file type or a messy file name
Why it hurts: "resume_final_v9.docx" looks careless, and scanned PDFs can't be read by ATS.
Fix: send a text-based PDF unless Word is requested, named like Jane-Smith-Resume.pdf. See resume PDF or Word and how to name your resume file.
Contact and Personal Info Mistakes
16. An unprofessional email address
Why it hurts: partyqueen2008@email.com makes a first impression before anything else does.
Fix: use a simple address like firstname.lastname@email.com.
17. Wrong or missing contact details
Why it hurts: one wrong digit and no one can call you.
Fix: double-check your phone, email, and LinkedIn URL. See resume heading.
18. Too much personal information
Why it hurts: in the US, UK, Canada, and Australia, a photo, date of birth, marital status, or full street address can introduce bias and wastes space.
Fix: include name, phone, email, city and state, and LinkedIn. See photo on resume and address on resume.
19. "References available upon request"
Why it hurts: it's assumed, and it takes up a line you could use for an achievement.
Fix: delete it and prepare a separate reference list. See references on a resume.
Strategy Mistakes
20. Leaving out keywords and important skills
Why it hurts: if the job asks for "Salesforce" and "pipeline management" and your resume doesn't mention them, you may never get seen.
Fix: compare your resume to the job posting and add the skills you genuinely have, in both your skills section and your bullets. Check your match with an ATS score tool.
Quick Resume Mistake Checklist
Before you hit "submit," check:
- No typos (read it out loud)
- Tailored headline and summary
- Results and numbers in most bullets
- Keywords from the job posting
- Single-column, ATS-friendly layout
- Consistent formatting and dates
- Right length for your experience
- Professional email and correct contact info
- No photo or personal details (in the US, UK, Canada, Australia)
- Text-based PDF with a clear file name
Frequently Asked Questions
What are the biggest resume mistakes?
Typos, generic untailored resumes, listing duties instead of results, missing keywords, and ATS-unfriendly design are the most common and costly.
Can one typo ruin a resume?
Not always, but it can hurt, especially in roles that require attention to detail. With so many applicants, recruiters may move on to an error-free resume.
What should you not put on a resume?
A photo (in the US and similar markets), date of birth, marital status, full street address, salary history, references, unrelated old jobs, and anything untrue.
Is it a mistake to have a two-page resume?
Not if you have 10+ years of relevant experience. It's a mistake if the second page is filler or you're early in your career.
How do I check my resume for mistakes?
Read it out loud, use spell-check, compare it to the job posting, test it with an ATS checker, and ask a friend or mentor to review it.
Fix Your Resume Fast
Our Resume Builder gives you ATS-friendly templates and AI-powered suggestions that help you catch these mistakes before a recruiter does.