An applicant tracking system is, at its core, a text parser: it extracts your name, contact details, job titles, dates, and body text into structured fields so a recruiter can search and filter applicants. It is not usually running a sophisticated judgment of your fit. It's trying to read your resume the way a very literal-minded reader would. Most "ATS problems" are really formatting choices that a literal-minded reader can't parse, not some hidden scoring algorithm working against you.
What actually breaks parsing
- Multi-column layouts: text can be extracted in the wrong reading order, scrambling sentences.
- Text inside images, or contact info conveyed only through icons with no adjacent text.
- Tables and text boxes: content inside them is often skipped entirely.
- Creative section headings ("My Journey" instead of "Experience"): a parser trained on conventional headings may not classify the section at all.
- Headers and footers carrying information the parser doesn't scan, like a phone number placed only in a page footer.
None of this means a resume has to look plain to be safe. It means the underlying structure has to stay simple even if the visual design isn't. A single-column layout with a clearly labeled "Experience" section, real text (not an image) for every word, and standard date formatting will parse cleanly in almost any system, regardless of how it looks on screen.
The keyword strategy that actually works
Job descriptions are the best signal available for which terms a screen is likely to weight. Extract the specific hard skills, tools, and certifications a posting names, and make sure your resume uses that literal language somewhere a human would actually read it: inside a real accomplishment bullet, not appended to a list for the parser's benefit. A skill mentioned only in a "Skills:" list with no supporting bullet reads as weaker evidence than the same skill demonstrated inside a real sentence.
What we won't build (and you shouldn't do)
Some advice suggests hidden text, invisible keyword blocks, or white-text-on-white-background keyword stuffing to "beat" the system. This is detectable, it's a real reason to get a candidate rejected outright once found, and it doesn't actually address the underlying problem: that the resume doesn't yet demonstrate the skill in context. This app never generates that kind of content, on principle, not just because it doesn't work.
If you're using ResumeReady, every template is checked for whether it parses cleanly through this kind of automated screen. Look for the "ATS Safe" badge when browsing the template gallery.