Preview Won’t Open a PDF on a Mac? Every Fix, In Order (2026)

You double-click a PDF, Preview bounces in the Dock… and nothing. Or it opens a blank white page, spins forever, quits unexpectedly, or throws “The file could not be opened” or “damaged.” Below are the fixes in the order a technician would actually try them — fastest and safest first. Stop as soon as your PDF opens.

First: is it every PDF, or just one?

This one question tells you which half of the guide to read:

  • Only one specific PDF fails (others open fine) → the file is the problem. Jump to Fix 5: repair a damaged PDF.
  • Every PDF fails, or Preview crashes on all of them → the app is the problem. Start at Fix 1 and work down.

Fix 1: Force-quit Preview and reopen the file (30 seconds)

A stuck Preview process is the most common cause of a blank window or a beachball. Press Option + Command + Esc, select Preview in the list, and click Force Quit. Then double-click your PDF again. If Preview isn’t listed, it already quit — just reopen the file.

Full walkthrough: how to force-quit a frozen app on a Mac.

Fix 2: Restart the Mac

Boring, but it clears the memory and background processes that hang PDF rendering. Use Apple menu → Restart (a full restart, not just closing the lid). Try the PDF once more before moving on.

Fix 3: Open the PDF a different way

Sometimes the double-click association is broken, not Preview itself:

  • Right-click the PDF → Open With → Preview. If that works, the file association was the issue.
  • Press the Spacebar on the selected file to open it in Quick Look. If Quick Look shows the PDF but Preview won’t, the problem is squarely Preview — continue to Fix 6.
  • Open it in a browser: drag the PDF onto an open Safari or Chrome window. If it renders there, the PDF is fine and you can read or re-save it while you fix Preview.

Fix 4: Free up disk space

Preview needs scratch space to render large or image-heavy PDFs. If your startup disk is nearly full, big files can open blank or fail silently. Check Apple menu → System Settings → General → Storage; if you’re under a few GB free, clear space first — see how to fix a full Mac storage disk.

Fix 5: Repair or rescue a damaged PDF

If one PDF is the culprit — especially one that says “damaged,” “corrupt,” or “could not be opened” — try these in order:

  • Re-download or re-copy it. Interrupted downloads and email attachments are the #1 source of “damaged PDF.” Grab a fresh copy from the source.
  • Open it in a browser, then re-save. Drag the PDF into Safari or Chrome; if it renders, use File → Export as PDF (Safari) or Print → Save as PDF (Chrome) to write a clean copy that Preview can open. Our Print to PDF guide covers the exact steps.
  • Check the file size. A 0 KB or a few-KB PDF is empty — the transfer failed. Re-send it.
  • Rename off any weird extension. A file saved as .pdf.download or .pdf.crdownload is a half-finished download; complete or re-download it.

Fix 6: Rebuild Preview’s settings and caches

If every PDF still fails, Preview’s preference file or cache is likely corrupt. This is safe — it only resets Preview’s own settings, not your files:

  1. Quit Preview.
  2. In Finder, choose Go → Go to Folder (Shift + Command + G) and enter ~/Library/Preferences.
  3. Move com.apple.Preview.plist to the Trash (macOS rebuilds a fresh one automatically).
  4. Then go to ~/Library/Containers/com.apple.Preview and move that folder to the Trash as well.
  5. Restart the Mac and open a PDF. Preview starts clean.

Fix 7: Update macOS (and reset NVRAM if it’s still stubborn)

Preview ships with macOS, so it can’t be reinstalled on its own — but a macOS update reinstalls it as part of the system. Run System Settings → General → Software Update (steps: how to update macOS). If crashes persist right after an update, reset NVRAM/PRAM to clear stale display and graphics settings that can blank the PDF view.

Fix 8: Test in another user account

Create a second user (System Settings → Users & Groups → Add Account), log in, and open a PDF. If Preview works there, the fault is in your main account’s files (Fix 6 usually solves it). If it fails in a fresh account too, the issue is system-wide — a macOS reinstall via Recovery is the next step.

When it’s the Mac, not the PDF

Repeated app crashes, kernel panics, or a Mac that freezes across many apps can point to failing storage or memory rather than Preview. If your Mac is old or unreliable and you’re weighing a repair against an upgrade, a clean, warrantied refurbished MacBook is often the better value — browse our Apple clearance deals, or get a trade-in quote for the one that’s giving you trouble.

Related guides

Frequently Asked Questions

Why does Preview open a blank white page instead of my PDF?

Usually a stuck Preview process or low disk space. Force-quit Preview (Option + Command + Esc), restart the Mac, and make sure you have a few GB of free storage. If only one file is blank, it’s likely a broken download — re-download it.

Preview says my PDF is “damaged” — can I recover it?

Try opening it in Safari or Chrome and re-saving as a new PDF; browsers are more forgiving of minor corruption. If it won’t open anywhere, the file is truly damaged — request a fresh copy from whoever sent it.

How do I make Preview the default PDF app again?

Right-click any PDF → Get Info → under “Open with,” choose Preview → click “Change All.” Every PDF will now open in Preview on double-click.

Can I reinstall Preview on a Mac?

Not by itself — Preview is part of macOS. Running a macOS update or reinstalling macOS through Recovery restores a fresh copy of Preview.

Preview keeps crashing on every PDF. What now?

Delete Preview’s preference file and container (Fix 6), restart, and update macOS. If it still crashes in a brand-new user account, the problem is system-level — back up and reinstall macOS.

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