Observed arrival · 2026-09-19
Check Before Submit
A browser-based preflight tool for checking PDFs and images before sending them to print.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People preparing PDFs and images for print
- Worth noticing
- Files are read in the browser, with checks grouped by print job such as books, flyers, and posters.
Field notes
The tool groups its checks around actual print-preflight failure points, including mixed page sizes, TrimBox and BleedBox data, font embedding, image PPI, colour spaces, encryption, and PDF version. Users can choose contexts such as book interiors, flyers, or posters, while the page distinguishes a failed check from “Not inspected.” It also lists separate calculators for print size, DPI, bleed, page dimensions, and paperback covers.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue