How to Convert PDF to JPG Without Losing Quality
How rasterization and DPI work, and the clearest free methods on Mac, Windows, and in the browser.
A blurry PDF-to-JPG conversion almost always comes down to one setting: resolution (DPI). Get that right and the rest is straightforward — this guide covers how it works and the clearest free methods.
What PDF to JPG conversion actually is
PDFs are vector-based — text and graphics stored as instructions that scale without quality loss.
JPGs are raster (pixel-grid) images — smaller, universally viewable, but fixed at whatever resolution they're rendered at.
Converting renders ("rasterizes") the PDF page into a grid of pixels at a chosen DPI. Higher DPI = more pixels = sharper image = larger file.
Method 1: Online converter (fastest)
1Open the converter
Go to PDFTeq's PDF to JPG tool and select your file.
2Choose a DPI
72-96 for screen use, 150-200 for general sharing, 300 for print or archiving.
3Convert and download
Each page becomes a JPG, bundled into one ZIP.
Method 2: Mac's Preview app
- Open the PDF in Preview (double-click, or right-click → Open With → Preview).
- File → Export.
- Set the format dropdown to "JPEG" and adjust the quality slider.
- Save.
Built-in, no installation, and reliable for single documents.
Method 3: Windows, using a browser
Windows doesn't have a native "export PDF as JPG" feature. The closest workaround:
- Open the PDF in Microsoft Edge or Chrome.
- Use an online converter (Method 1) to get from PDF to JPG directly — this step still needs a converter, it's not a built-in Windows capability.
Method 4: Adobe Reader (free version)
- Open the PDF in Adobe Reader.
- Right-click inside the document → "Export image as" or "Copy image."
- Save as JPG.
Works best for single-page PDFs or grabbing one image at a time.
Choosing a DPI
| DPI | Typical use | Rough file size |
|---|---|---|
| 72-96 | Web/screen preview only | Smallest — varies with content |
| 150-200 | General reading and sharing | Moderate |
| 300 | Printing or archiving | Largest |
Actual file size depends heavily on page content — a text-only page is much smaller than a photo-heavy one at the same DPI. Treat the sizes above as directional, not exact.
Common problems
The JPG looks blurry
DPI was too low. Re-convert at 300 DPI for documents you'll print or zoom into.
Only one page came out
Make sure your tool processes every page — PDFTeq's converter bundles all pages into one ZIP automatically.
File size is too large
Lower the DPI, or compress the resulting JPGs afterward with a dedicated image compressor.
Converter fails on a large file
Try splitting the PDF into smaller sections first, or use desktop software instead of a browser tool for very large documents.
Why local processing matters for this specifically
PDFTeq's converter never uploads your file — it renders pages directly in your browser using pdf.js and generates the JPGs locally. That's a stronger claim than "files are deleted after conversion" (which is what most cloud-based converters offer instead): here, there's no upload step to begin with. You can verify this yourself by opening your browser's developer tools (F12) → Network tab while converting a file.
FAQ
With PDFTeq's tool specifically, yes — your file is never uploaded, which you can verify in your browser's Network tab. For other converters, check whether they process locally or upload to a server before trusting them with sensitive documents.
No — a JPG is a flat image. The text becomes part of the picture and isn't selectable. You'd need OCR software afterward if you need editable text.
Not with PDFTeq's tool currently — it handles one PDF per run (though it does convert every page of that PDF automatically). For converting many separate PDF files, you'll need to repeat the process per file.
72-96 DPI for screen viewing, 150-200 for general use, 300 for printing. If unsure, 200 DPI is a reasonable default.
No — free options (a browser converter, Mac Preview, or the free Adobe Reader) cover this without a paid subscription.
Yes — PDFTeq's converter runs in a mobile browser the same way it does on desktop, since it's just JavaScript rendering, no app install needed.
Conclusion
- PDFs are vector, JPGs are raster — conversion renders pixels at a chosen DPI.
- 300 DPI for print/archiving, 150-200 for general use, 72-96 for screen-only.
- PDFTeq's converter processes one file per run, entirely in your browser — nothing uploaded.
- Keep your original PDF; JPG conversion is one-way.