A first screening lasts seconds. Resume Check counts what gets read in that time: bullets that carry a number, phrases that state a duty, and the terms from the job ad that your resume never uses. Your resume stays in your browser.
The part of recruiter-lens that a script can do on pasted text. It counts and quotes. It does not score you.
Nowhere. The check is a script that runs in this page, and neither the resume nor the job ad is sent to us or stored. You can read the script at /resume/resume-core.js.
No. Applicant tracking systems differ, and none publishes how it ranks. This page shows which of the ad's repeated terms are missing and whether your headings are the plain ones a parser expects. It gives no percentage.
Only the ones that are true of you. A term you cannot back up gets found in the first interview. Use the ad's wording for things you have really done.
Pasted text has no layout. Two-column designs, tables and text boxes are what scramble a resume inside a tracking system, and only the file shows them. The result lists layout as not checked.
It is free of the faults a script can count. Whether the story makes sense, whether a gap needs a line of explanation and whether your numbers are the right ones take a reader. The recruiter-lens skill does that review.