You need a PDF as an image. You can either convert it to JPG using a proper tool or just take a screenshot. Both produce an image file - but the quality, use cases, and appropriate situations are very different. Here is what you need to know.
What a PDF-to-JPG Conversion Actually Does
When you convert a PDF to JPG using a dedicated tool, the software renders each PDF page at a specified resolution - typically 150 to 300 DPI - and exports the result as a JPEG or PNG image file. The rendering process uses the actual PDF data: vector text, embedded fonts, and graphics are rendered cleanly at the target resolution.
The result is an image that accurately represents the PDF page at a controlled, consistent quality.
What a Screenshot Does
A screenshot captures what your screen is currently displaying at your monitor's screen resolution, which is typically 96 DPI on standard displays and 192 DPI on high-DPI (Retina) displays.
Problems with screenshots of PDFs:
- Resolution is fixed at screen resolution. On a standard 1080p monitor, a screenshot of an A4 PDF at 100% zoom gives roughly 96 DPI - adequate for screen viewing but not for print or high-quality use.
- UI chrome is captured. Unless you crop carefully, screenshots include browser UI, scroll bars, and background.
- Quality depends on zoom level. If your PDF viewer is zoomed to 75%, your screenshot is at 75% of screen resolution. You have to manually manage zoom to get consistent output.
- No automation. Screenshotting 50 pages means 50 manual captures.
- Color accuracy may vary. Monitor color profiles affect screenshot colors differently than vector rendering.
Side-by-Side Comparison
| Factor | PDF to JPG Tool | Screenshot |
|---|---|---|
| Resolution control | Yes - set DPI explicitly | No - depends on screen and zoom |
| All pages at once | Yes | No - one at a time |
| Consistent output | Yes | No - depends on window size |
| No UI artifacts | Yes | Requires careful cropping |
| Works offline | Yes (with LocalPDF) | Yes |
| Speed for many pages | Fast (batch) | Slow (manual) |
When a Screenshot Is Acceptable
Screenshots are fine in limited situations:
- You need a quick image of a single page for a chat or email and quality is not critical
- The PDF is just a few pages and you only need one or two
- You are annotating something in a presentation or document where pixel-perfect quality is not required
- The image will only be viewed on screen at small sizes
When to Use a Proper PDF-to-JPG Tool
Use a dedicated converter when:
- Quality matters - print, professional presentations, social media graphics
- You need multiple pages converted consistently
- The output will be enlarged or cropped
- You need a specific DPI (for print: 300 DPI; for screen: 150 DPI)
- You are processing files in bulk
JPG vs. PNG: Choosing the Right Image Format
When converting PDFs to images, you typically choose between JPG and PNG:
JPG: Smaller file size due to lossy compression. Best for pages with photographs and complex color. Avoid for text-heavy documents where compression artifacts are visible around text edges.
PNG: Larger file size but lossless compression. Best for text, diagrams, charts, line art, and anything with sharp edges. PNG preserves text clarity that JPG degrades.
Rule of thumb: Use PNG for documents with text or technical drawings. Use JPG for pages dominated by photographs.
How to Convert PDF to JPG with LocalPDF
LocalPDF PDF to JPG converts pages in your browser - no upload required.
Step 1: Open uselocalpdf.com/tools/pdf-to-jpg.
Step 2: Upload your PDF.
Step 3: Choose your settings - image format (JPG or PNG) and quality level.
Step 4: Select specific pages or convert all pages.
Step 5: Download the images. Multi-page conversions are packaged as a ZIP file.
What Resolution Should You Choose?
| Use Case | Recommended DPI |
|---|---|
| Screen viewing, web, email | 96–150 DPI |
| Presentations | 150 DPI |
| Professional printing | 300 DPI |
| Large format printing | 300–600 DPI |
For email sharing or uploading to a website, 150 DPI gives excellent quality with manageable file sizes. For anything destined for print, always use 300 DPI.
Privacy When Converting PDFs
If your PDF contains sensitive content, choose a tool that processes files in your browser. With LocalPDF, no page of your document is ever uploaded - the conversion happens entirely in JavaScript in your browser tab. This is particularly relevant for contracts, financial documents, and ID scans that you might want as images.
Conclusion
Screenshots are a quick, adequate solution for low-stakes, single-page captures. For anything requiring quality, consistency, or multiple pages, use a dedicated PDF-to-JPG converter. Set the resolution to match your use case (150 DPI for screen, 300 DPI for print), and choose PNG for text-heavy pages and JPG for photographic content.