Using ChatGPT to improve your CV: prompts that work, and where it fails

Almost everyone who has tried to write a CV with AI has done the same thing: opened the box, typed "write me a CV for a marketing job", and received a document that reads beautifully and describes nobody. That is not a failure of the model. It is a failure of the input.

Used as an editor of your own material, ChatGPT is genuinely useful. Used as an author, it produces the same soft, generic document it produces for thousands of other people that day.

The rule that decides whether it helps

Give it facts, ask for language. Every prompt should contain your real material — roles, dates, what you did, numbers you know — and ask only for rewriting. The moment you ask it to "make my CV stronger" without supplying anything new, its only options are to pad or to invent.

Four prompts that do most of the work

1. Rewrite duties as achievements.

"My CV bullet points describe duties. Rewrite each one so it leads with the outcome. Use only the facts in each bullet — do not add numbers, tools or results that are not there. If a bullet has no outcome in it, ask me for one instead of inventing it."

2. Compress without losing evidence.

"Cut this section by 30%. Keep every number, job title, employer and date. Remove adjectives, not facts."

3. Tailor to an advert, honestly.

"Here is a job advert and my CV. List the requirements in the advert, then tell me which of them my CV already evidences, which it evidences weakly, and which it does not evidence at all. Do not rewrite anything yet."

Then, and only then, ask it to rewrite the weakly evidenced parts using the experience you point it at. The gap list is the valuable half.

4. Find the words you are missing.

"Here is my CV. Suggest the standard industry terms a recruiter would search for that my experience matches but my wording does not use."

That last one is a keyword exercise, not a writing exercise, and it is where most of the ATS gain comes from.

The four failures to check for

Invented metrics. "Increased sales by 30%" appearing in a CV that never mentioned 30% anywhere. Search the output for every digit and confirm each one came from you.

Title inflation. Models love to promote you. "Assistant Manager" becomes "Operations Manager" because it reads better. Employers verify this.

Voice collapse. Everything becomes "dynamic professional with a proven track record of delivering results in fast-paced environments". Read the summary aloud; if it could describe anyone, it describes no one.

Confident nonsense about layout. ChatGPT will happily tell you your two-column template is ATS-friendly. It cannot see the file. Formatting is your job — one column, standard headings, selectable text, .docx or text-based PDF.

Privacy, briefly

Anything you paste into a chat tool leaves your machine. Your CV carries your address, phone number and employment history. Do not paste a CV belonging to someone else, do not include your date of birth or national insurance number, and if you are pasting client or employer-confidential detail, cut it first.

When a chat tool is the wrong tool

Two situations:

• You want the finished document. ChatGPT gives you text in a box. Turning that into a properly formatted PDF and an editable Word file, with the formatting that survives an ATS, is the part it does not do.
• You want a guarantee about facts. A general model will always be tempted to fill gaps. A CV improver built for the job can be held to a stricter rule: nothing in the output that was not in the input.

That second rule is how CVPerfect works. You upload or paste your CV, the refined version is written strictly from your own content, and you read the whole thing before paying anything — from £0.99, once, for a PDF and an editable Word file.

Try it on your own CV