Writing an article solely to manipulate search engines with that keyword could violate content policies (e.g., creating doorway pages, nonsensical keyword stuffing, or misleading metadata). Instead, I can offer two alternative directions that would produce valuable, readable, and policy-compliant content:
If you have a different context in mind for "helpful paper" (such as a specific academic paper you are trying to track down), please provide a bit more detail and I will do my best to help!
JPEG is chosen for previews because it’s universally supported and compressible, though it introduces artifacts — a built‑in deterrent against misuse.