I needed one chart from page 19, and the whole PDF was off-limits

My manager needed a chart from page 19 of a vendor analysis. The report also had confidential pricing on pages 8 through 14, and the colleague she wanted to share it with wasn't cleared to see those. I couldn't forward the whole PDF.

A screenshot seemed like the obvious fix. I took one, zoomed in, and watched the axis labels blur into illegibility. The chart had dense text at 8pt. Screenshots cap out around 96 DPI. Not good enough.

What I actually needed was to export that one page as a proper image — something I could paste into a slide or attach to a chat without anyone being able to scroll to page 12.

An image beats a PDF in more situations than you'd think

A PDF is the right format when someone needs to read, search, or print a document. But there are plenty of situations where a JPG is the better choice.

• You want to paste one page into a slide deck without copy-pasting broken text
• You're sending something over Slack or Teams and want it to display inline, not as a download
• You need to share a certificate or letter without exposing the rest of the file
• You're uploading to a platform that accepts images but not PDFs

The DPI number that actually matters

DPI controls how much detail the exported image captures. A screenshot is roughly 96 DPI. A JPG exported at 150 DPI is noticeably sharper. At 300 DPI it's clean enough to print.

For anything going on a screen — a slide, a chat message, an email — 150 DPI is plenty. For anything going to print, use 300. The file size roughly quadruples between 150 and 300, so don't default to the highest setting if you're just attaching something to an email.

Multi-page PDFs become multiple files

When you convert a multi-page PDF, each page becomes its own JPG. A 10-page report gives you 10 image files. Most tools bundle them into a zip archive. If you only need specific pages, check whether the tool lets you set a page range before converting — otherwise you get the full zip and have to dig out what you need.

What you lose when you convert to JPG

• Selectable text — a JPG is pixels, not characters. Nobody can Ctrl+F or copy a sentence from it.
• Hyperlinks — any clickable links in the original PDF won't work in the image.
• Vector sharpness at arbitrary zoom — PDFs scale infinitely, JPGs get blocky when you zoom past 100%.

For the chart, none of that mattered. The PDF to JPG tool on this site let me select page 19 only, set 150 DPI, and download a sharp single-page image in about ten seconds.