Check your PDF before print. Right in the browser.
Color separations, overprint, ink coverage (TAC), RGB objects and output intent — no Acrobat, no install.
Free · no sign-up · files deleted within 24 h
Color separations, overprint, ink coverage (TAC), RGB objects and output intent — no Acrobat, no install.
Free · no sign-up · files deleted within 24 h
Exactly what comes off the press — before you send the data.
Bleed, image resolution, fonts, color space and output intent — checked in one pass, with a plain verdict for each. What it hasn’t verified it says so, instead of quietly passing it.
Preview each printing plate on its own, like on film. Toggle plates on and off to see what goes where.
Catches disappearing white text and wrong overprint settings before they vanish in print. Side-by-side “with / without overprint”.
A map of areas where total ink coverage exceeds the stock limit. Set the threshold to match your press.
Flags RGB objects and shows their conversion to print colors through an ICC profile — just like the printer’s RIP.
Output intent from the PDF (FOGRA39 and more), switching Media/Crop/Trim/Bleed/Art and box outlines to check bleed.
Ink coverage of every channel under the cursor, in percent — check the one spot you care about instead of guessing from the screen.
Every font with its type and whether it is embedded; every image with its resolution, color space and a thumbnail — flagged below 300 DPI or still in RGB.
PDF version, producer, creation date, page size and the Trim/Bleed/Media boxes in millimetres — what the file actually says about itself.
A short guide: CMYK, bleed, overprint, ink coverage (TAC), output intent, resolution and embedded fonts — and what to check at each step.
No tracking, no black boxes.
Anyone preparing print data without Acrobat Pro — especially Affinity and InDesign users.
See separations and overprint of your exported PDF — the Acrobat Output Preview checks, from Affinity Publisher, InDesign or QuarkXPress.
Verify client PDFs — TAC, spot colors, bleed.
A pro preview of print data for free, right in the browser.
Yes. The tool is a free beta, with no sign-up and no installation.
Files are processed on our own server and deleted automatically within 24 hours. We never hand them to a third-party service.
Yes. Preflighter shows color separations, overprint and ink coverage in the browser — the checks you’d run in Acrobat Pro’s Output Preview, for free. Full comparison with Acrobat →
Yes — open the print-ready PDF you export from any of them (Affinity Publisher, InDesign, QuarkXPress, CorelDRAW). It reads CMYK and spot colors.
Bleed (3 mm by default), image resolution (a warning below 300 DPI), embedded fonts, color space, spot colors, transparency, overprint, output intent, PDF/X and whether all pages share one trim size.
Page boxes, image resolution, fonts and PDF/X are read from the whole document right away. Checks that need the page rendered — spot colors, transparency, overprint — cover the pages you have opened, and the checklist marks the rest as not checked rather than passing it.
The tool is free and ad-free. If it saved you time, you can buy me a coffee.
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