Here's what makes a letter worth reading, how to write one from the job description in minutes, and how to use AI for it honestly.
What a good cover letter actually contains
Not a retelling of your resume. A good letter answers one question the resume can't: why this role, and why you — in their words.
- Length: 200–300 words. One screen.
- Structure: why this role at this company (2–3 lines) → your one or two strongest matches to the posting's top requirements, with concrete proof → what you'd bring in the first months → a short close.
- Language: the posting's vocabulary. If they say "stakeholder management", your letter says "stakeholder management" — because that's the language both the recruiter and the screening software are matching against.
The 5-step method (from the job description)
- Extract the top 2–3 requirements from the posting — the ones listed first or repeated (same skill as tailoring a resume).
- Pick your proof for each: one real project, result, or responsibility per requirement. No proof — don't claim it.
- Open with the role, not with yourself. "The [role] posting caught my attention because…" beats "I am writing to apply…".
- Write the middle as requirement → proof pairs, in the posting's wording.
- Close with direction, not desperation. "I'd welcome the chance to discuss how [specific thing] could work at [company]" — and stop.
Using AI for cover letters — honestly
AI is genuinely good at this task, with two conditions:
- Feed it the real inputs: the job description AND your actual resume. A letter generated from the posting alone is generic fiction with your name on it.
- Ban invention. The letter may only reframe experience you actually have. If a generated draft claims a skill or number you can't defend in an interview, cut it — recruiters interview against the letter too.
Then edit for voice: read it aloud once, replace anything you'd never say. Ten minutes total instead of an hour — that's the honest win of AI here, not "no effort at all".
See what your resume is missing — before you apply.
CVder reads the job posting and your resume side by side, then shows the exact terms to add and the formatting a parser would trip on.
The shortcut
CVder generates the cover letter and the tailored resume as a matched pair from the same job description — the letter draws only on what's in your CV, in the posting's language, and you edit before sending. It's part of the same couple-of-clicks flow as the resume tailoring; the free, no-signup ATS resume check is the easiest way to see how the matching works before creating an account.