$0
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See a watermarked sample proof, bleed guides, crop marks, and preflight report before buying a clean export.
PDF preflight checker for online print exports
Short answer
A PDF preflight checker should verify that the file is the expected size, has correct trim and bleed boxes, embeds fonts, uses the intended color workflow, and contains images at print resolution.
Use this page when a PDF looks fine on screen but needs structural print checks before a printer or client receives it.
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Buy one export credit
Use advanced mode for one production PDF/X-1a export when a specific print job is ready.
$49/mo
Use Trim Proof Pro
Choose the subscription when repeat flyers, cards, postcards, or letterhead jobs need checked files.
What Trim Proof checks
- PDF exists and is downloadable
- MediaBox, TrimBox, and BleedBox
- PDF/X subtype
- Embedded fonts
- Placed raster DPI
- Ghostscript PDF/X conversion
How the workflow runs
- 1Generate the proof
- 2Run the preflight gate
- 3Review passed and needs-attention checks
- 4Fix geometry, fonts, or images when needed
- 5Download the PDF only after the report is acceptable
What Trim Proof checks before delivery
The first proof checks PDF creation, MediaBox, TrimBox, BleedBox, PDF/X subtype, embedded fonts, and raster DPI. Paid production exports use the same gate before delivery.
Why automated preflight matters
A file can look fine on screen and still fail at print. Automated preflight catches structural PDF problems before a user pays for or sends the file.
Related print-ready tools
Prepress Checklist for Print-Ready PDFsUse a prepress checklist to prepare print-ready PDFs with bleed, crop marks, CMYK-oriented output, embedded fonts, image DPI, PDF/X status, and preflight checks.Online PDF Prepress ToolsUse online PDF prepress tools for print-ready checks: CMYK output, bleed, crop marks, PDF/X, embedded fonts, trim boxes, and preflight.Prepress Automation SoftwareUse prepress automation software to generate and check print-ready PDFs for bleed, crop marks, CMYK, PDF/X, fonts, DPI, and boxes.
Common questions
Can preflight guarantee every printer will accept a file?
No software can guarantee every vendor-specific requirement, but preflight greatly reduces avoidable production failures.