Cover Letter Studio
Paste a job posting and get a tailored cover letter and resume, with an ATS keyword score. Free, no sign-up, and your resume stays in your browser.
- Free, no account needed
- Your data stays in this browser
- ATS keyword score for each version
- Optional AI setting with your own API key
Job description
Extracted job details editable
Top keywords detected
Cover letter click to edit
Tone & length
Keyword coverage
Score breakdown
Upload resume (optional)
PDF · DOCX · TXT
Contact details
Professional summary
Core competencies
Professional experience
Education
Certifications & awards
Resume versions
Keywords to weave in
Resume score breakdown
AI engine (optional)
https://api.anthropic.com/v1/messages with the key attached server-side.Data
Everything you enter is kept in this browser's localStorage under the key cls.v1. Clearing site data erases it, so export a backup.
Appearance
How the ATS score is calculated
| Component | Weight |
|---|---|
| Job-description keyword coverage (weighted by how often each term appears in the posting) | 45% |
| Hard-skill & tool coverage | 15% |
| Exact job title + employer name present | 10% |
| Structure (contact block, salutation, 3–5 paragraphs, sign-off, word count) | 18% |
| Readability & evidence (action verbs, quantified results, sentence length) | 12% |
Resumes are scored the same way but structure points come from having Summary / Experience / Education / Skills sections, consistent date formats, bullet counts and the share of bullets containing a number.
No ATS vendor publishes its algorithm. This score is a well-grounded proxy for the things every major parser and every recruiter keyword search actually looks at — treat it as a strong directional signal, not a literal number Workday will show a recruiter.
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