One PDF beats a zip of JPGs
Upload pages to JPG to PDF in reading order. Rotate sideways shots and preview phone/email lines at 100% zoom before you download.
Compress after convert
If Naukri-style boards reject the PDF, open Compress PDF or the focused Naukri compress and resume compress guides.
When Word is better
ATS often prefer a real DOCX. If you still have the source, use Word to PDF instead of photographing a printed CV.