Screening software and busy recruiters both work from the job advertisement: if the words on it are not on your CV, you look like a weaker match than you are. This tool reads both texts and lists the advertisement's key terms that your CV contains and the ones it does not.
It cannot tell whether you actually have a skill — that judgement stays with you — but it saves the highlighting and shows exactly where to use the employer's own wording. Read how to tailor a CV in twenty minutes for the full method.