AutoCAD PDF Resolution Settings Explained
AutoCAD PDF quality settings use separate DPI values for vector graphics and raster images. Higher values can preserve more detail but increase file size and processing/printing time.
Start here — what you are going to do
Your goal: Set a practical PDF resolution instead of assuming the maximum value is always better.
Where to start: Choose the final use: physical printing, on-screen review, web/mobile or dense-detail output.
Beginner rule: Quality is a tradeoff. Compare a real PDF before changing the office preset.
Step by step — follow this in AutoCAD
Step 1 — Open PDF quality settings
Where: PDF PC3 Properties / Export to PDF Options.
Do this: Find Vector Quality and Raster Image Quality.
Check: Current values are visible.
Step 2 — Record current preset
Where: PDF options.
Do this: Note preset and DPI.
Check: Baseline exists.
Step 3 — Plot baseline sheet
Where: Plot to PDF.
Do this: Use a dense representative Layout.
Check: File size and quality are known.
Step 4 — Adjust one value
Where: Test custom PC3/options.
Do this: Raise or lower vector/raster quality based on the issue.
Check: Only one variable changes.
Step 5 — Compare at useful zoom and paper
Where: PDF viewer / physical print.
Do this: Inspect fine detail and images.
Check: Difference is meaningful.
Step 6 — Check performance
Where: File properties / printer.
Do this: Compare size and processing time.
Check: Chosen DPI is practical.
Beginner example
Autodesk’s predefined presets range from 400 dpi vector quality in Smallest File/Web-Mobile to 2400 dpi in High Quality Print. There is no single universal correct DPI for every CAD PDF.
Understand what AutoCAD is doing
Vector and raster are separate controls
Linework and images may need different attention.
Higher resolution has a cost
Autodesk notes higher resolution increases quality, file size and printing time.
Preset defaults are useful baselines
Start with the closest preset, customize only after testing.
Useful next guides: Vector vs Raster PDF Quality · AutoCAD PDF Presets Explained · AutoCAD PDF File Is Too Large: How to Reduce It · AutoCAD PDF Is Blurry or Pixelated · AutoCAD PDF Is Slow to Open or Print: What to Check
Common problems and what to check first
| What you see | What may be causing it | Check this first |
|---|---|---|
| Fine linework lacks detail | Vector quality too low | Test higher vector DPI. |
| Images blurry | Raster quality/source image low | Check both. |
| PDF too large | Resolution exceeds need | Reduce controlled values. |
| Plotter slow | Dense/high-DPI PDF | Balance with performance. |
When you need a more repeatable workflow
Document acceptable visual and performance thresholds rather than standardizing DPI values in isolation.
Official Autodesk references
AutoCAD labels and available media can vary by release, driver and output device. These Autodesk pages document the core workflow used in this guide.
Frequently asked questions
What does High Quality Print use?
2400 vector / 600 raster by default.
What does Smallest File use?
400 vector / 200 raster by default.
Should screen PDFs always be low DPI?
No; detailed on-screen use can justify higher resolution.
Explore more in CAD PDF & Publishing Guide.