PDF DPI Checker - Check PDF Resolution Online
Check the effective DPI and pixel dimensions of a PDF page. Verify print quality before sending to a printer. Free, private, runs entirely in your browser.
Click to select a PDF file, or drag and drop
Your file never leaves your browserHow to Check PDF DPI
- Upload the PDF you want to check.
- Click Check DPI to render the first page at its native resolution and measure the effective DPI.
- See the DPI value, page dimensions in points and pixels, and total page count in the results panel.
Example
A page sized at 612 × 792 points (US Letter) that renders at 2448 × 3168 pixels has an effective DPI of 288 — well above the 300 DPI threshold usually recommended for high-quality printing.
Common Use Cases
- Verifying whether a PDF has sufficient resolution for print production (typically 300 DPI).
- Checking if scanned documents are at a usable resolution for OCR or archival.
- Diagnosing blurry or pixelated output in a PDF before sending to a printer.
FAQ
- Why only the first page? Most PDFs have consistent resolution across all pages. Checking the first page gives a reliable indicator of the entire document.
- What DPI is good for printing? 300 DPI is the standard for high-quality printing. Below 150 DPI may appear blurry at normal viewing distance.
- Is my file uploaded anywhere? No — the check happens entirely in your browser; the PDF never leaves your device.