Professional printing requires specific PDF preparation that differs from screen-only documents. A file that looks perfect on your monitor can print poorly if not properly set up. Here's a checklist for print-ready PDFs.
Resolution
Images must be at least 300 DPI at the printed size. An image that looks sharp on screen (72-150 DPI) may print blurry. Check image resolution before sending to print — do NOT use Compress PDF on print files, as compression reduces image quality.
Fonts
Embed all fonts in the PDF. If fonts aren't embedded, the print shop's system may substitute them with different fonts, changing your design. Most applications have an "embed fonts" option when exporting to PDF.
Color Mode
Professional printing uses CMYK colors, while screens use RGB. Colors may shift when converting. If color accuracy is critical, create your original document in CMYK mode.
Bleed
If your design extends to the edge of the page, add 3mm (0.125 inch) bleed — extend the design beyond the trim line. Without bleed, slight cutting variations leave white edges.
Margins
Keep critical content (text, logos) at least 5mm from the trim edge. Content too close to the edge risks being cut off.
File Size
For print-ready PDFs, larger is better. Don't compress files going to a print shop. The printer needs maximum quality, and they can handle large files.
Final Check
Open the PDF at 100% zoom and inspect every page. Check for text overflow, image quality, correct page order, and consistent margins. It's much cheaper to fix issues on screen than to reprint 500 copies.
Ready to try it?
Use our free Compress PDF tool — no signup required.