Print. Spinner. Nothing comes out. Or print queue says 'printing' for ten minutes. Or the printer beeps and gives up.
PDFs fail to print for three distinct reasons. Identify which and the fix is straightforward.
What's actually going wrong
Permission lock. The PDF blocks printing in its security settings — the file owner disabled it. Driver/printer issue. The print system itself is broken; no PDF prints. File-specific issue. Other PDFs print fine, this one doesn't, because it has content (transparency, unusual fonts) the driver can't handle.
Test each: try printing a different PDF. If that works, the problem is this file. If it doesn't, your print system is broken.
The quick fix
Permission lock: Unlock the PDF with the owner password, then print normally.
Driver issue: Restart printer. Restart computer. Print from a browser (Chrome handles PDF differently from native readers and often works when desktop tools don't).
File issue: Compress the PDF to rebuild its structure, or convert to JPG and print the images. Both bypass file-specific render problems.
If that didn't work
If nothing prints, the print system itself needs attention. Reinstall the printer driver. Check the print queue for stuck jobs and clear it. On Mac, reset the printing system (System Settings > Printers > right-click > Reset).
For PDFs with specific content that breaks every printer, use 'Print as image' in the advanced print options. This rasterises everything and works on every driver.
Prevent it next time
Don't apply print restrictions on PDFs you'll need to print. Keep printer drivers updated. Compress PDFs before storing — small, well-structured files print more reliably than huge bloated ones.
FAQ
Why does only this one PDF refuse to print?
File-specific content trips your driver. Compress in Flint to rebuild structure, or convert to JPG and print the images. Both bypass the original render issue.
What does 'print as image' do?
Rasterises every page into a bitmap before sending to the printer. Bypasses every render issue. Slightly softer text but always works.
Can I print a password-protected PDF?
Only if permissions allow it. If 'print' is blocked, you need the owner password to unlock first. Use Flint's unlock tool.
Why does my PDF say 'printer not responding'?
Printer is offline, out of paper, in error state, or the driver lost connection. Check the printer's physical status, restart it, and verify network connection if it's wireless.
Diagnose first, fix second. Most print failures clear in Flint or with a driver restart.