RewAir Quality Check

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Published 2026-09-17 · SHA-256 2767f32eefee837d…

Windows 10 or 11, 64-bit. The app checks for new versions itself and offers to update.

Run the downloaded RewAirQualityCheck-Setup-…exe.
If Windows SmartScreen appears, choose More info → Run anyway (the installer is not code-signed).
Finish the wizard. A printer called RewAir Quality Check is created and the print agent starts at login.

Print a CoC from any program to the RewAir Quality Check printer: it is checked with today's date, a stamped copy is saved and printed on your normal printer.
Or open the app, drop CoC PDFs on the window, pick the check date, run the check and save stamped copies.
Customer thresholds live under Customers; the printer target under Printer.

The stamp no longer carries any OCR note.
OCR runs silently in the background (no console windows).
The right-click menu entry for PDFs is removed.
When a printed document cannot be checked, the app opens and asks you to open the original CoC PDF; nothing is stamped or printed.

A certificate with pages missing (for example a print of only the first page) is now refused instead of stamped: the CoC numbers its pages and all of them must be present.
Prints from Chrome and Edge (letters drawn as shapes) are read by the double-checked OCR; verified against a real Windows print.

Prints from Chrome and Edge, which draw the letters as shapes, are now correctly routed to the double-checked OCR reading instead of being reported as "no text".

Prints that arrive without text (Edge and Chrome print PDFs as pictures) are read by OCR twice at different resolutions; every number the verdict depends on must agree in both readings and pass structural checks, otherwise the job is refused with an explanation instead of guessed.
New: right-click any PDF and choose "Check with RewAir Quality Check" to run the original file exactly through the same check, stamp and print. Optional: automatically check CoC PDFs saved to Downloads (Printer settings).

Printed documents are read exactly, never guessed: PDFs whose text the previous version could not decode (such as Microsoft Print to PDF output) are now read with the same engine Edge and Chrome use.
OCR is only used when a page contains no text at all, and results say so.

Documents printed from Edge or Chrome (which send the pages as pictures) are now read with OCR; the result and the stamp say "text read by OCR" with the recognition confidence.
Settings and other dialogs open centred on the main window instead of the top-left corner of the screen.

Fixes the app not starting after installation ("No module named 'qualitycheck.app'"): a packaging error left the program's own code out of the 1.1.0 installer.
The build now starts the packaged program on the build server before an installer is produced.

First public release on coc-tool.lasserewers.com.
Checks every material batch and item expiry date on a RewAir CoC against the customer's shelf-life threshold; unknown customers are checked for expired dates only.
Virtual printer: print any CoC to "RewAir Quality Check" and it is checked, stamped, saved and printed on your normal printer.
Drag and drop, calendar date picker, search and sort, light and dark mode, customer and printer settings.
Automatic update check: new versions are offered when the app starts.