How to Match Your Resume to a Job Description With AI (Free Keyword Check)

Disclosure: I'm the maker of All Done (all-done.xyz), a site of free online tools — no signup, no cost. This is a cross-post of the full guide on our blog, adapted for DEV.

Tailoring a resume to each job description is the single highest-leverage habit in a job hunt — and the one most people skip, because doing it by hand takes an hour per posting. The free AI workflow compresses it to about ten minutes: build once on an ATS-safe foundation, generate the summary, score the match, and close the gaps.

Each step uses a free tool with no signup, and each step feeds the next. Here's the loop that turns one generic resume into a matched application for every posting.

The 4-step workflow

1. Build the resume in an ATS-safe builder on a single-column template.
2. Generate the professional summary with AI from the job title.
3. Score the resume against the posting with a keyword-match checker.
4. Close the gaps honestly, re-run the score, then apply.

Steps 1–2: build it right, then write the summary

Step one is the foundation: a resume built in the ATS Resume Builder, where the single-column templates, standard headings, and text-based formatting mean parsers extract your information cleanly. A resume the software can't read can't match anything — formatting comes before keywords.

Step two sharpens the top of the page. The builder's "Write with AI" generates the professional summary from the job title alone — 2–4 sentences tuned to the role — plus experience bullets to match. This is also the fastest section to re-tune per posting, since the summary carries the most keyword weight in the least space.

Steps 3–4: score it, then close the gaps honestly

Step three is the reality check. Paste your resume and the job description into the AI Resume Optimizer: it extracts the posting's keywords, cross-references your resume, and shows the match as a percentage with the missing terms listed. That missing-terms list is your edit list — concrete, specific, and per-posting.

Step four is closing the gaps, and this is where honesty is the strategy. Mirror the posting's phrasing for experience you genuinely have: "helped customers" becomes "customer success" if that's what you did. Add skills you truly hold but hadn't named. What you must never do is stuff keywords you can't defend — recruiters spot it in seconds, and a match score is worthless if the interview exposes it.

• Paste resume + job description; read the % and the missing terms.
• Mirror the posting's phrasing for real experience.
• Add only skills you can defend in an interview.
• Re-run the score until the overlap looks strong.

Why the loop works: private, free, per-application

The whole loop runs in your browser with nothing uploaded and no account anywhere in the chain — your resume text stays on your device through the build, the summary generation, and the keyword check. And because nothing is metered, the workflow scales to every application: each posting gets its own ten-minute pass.

That's the compounding advantage. One tailored application beats five generic ones, and a free, unlimited loop is what makes "tailor every application" practical advice instead of aspirational advice.

Try it free: the AI Resume Optimizer scores your resume against any job description — no signup, nothing uploaded.