Print what
you meant.
PROOF paginates your document for real, measures the ink every page actually carries, and drops the sheets that are waste — before a page moves.
You were about to print 5 sheets of nothing.
- Mean ink
- 2.9%
- Cost avoided
- $0.06
You can't see a page at 104 pixels.
The print dialog shows a thumbnail smaller than an app icon, then sends every sheet to the tray. On a real 15-page document, that's how a title page, a table of contents, and five pages of pagination furniture all print looking identical.
✕Page 1 of 15, at 104px wide. No measurement. No warning.
Same document. Same printer.
One asks you to trust a stamp-sized guess. The other is a real print dialog that did the work.
✕No measurement, no warning. Prints all fifteen — five of them waste.
Measured. Not rasterised.
Every text node's real glyph-run rectangles are read straight from the layout engine — Range.getClientRects — and summed against the page box, weighted by measured glyph density. It is not a screenshot. It's the same layout the browser will hand the printer.
measured · 241 glyph runs across 15 pages
Why this sheet is waste
Low ink isn't the whole rule.
A title page and a table of contents are both legitimately sparse — and both must print. PROOF only flags a sheet when it's under the threshold and carries no structure: no heading, no table, no list.
Table of contents
Under the 2.0% threshold on ink alone — but it carries a structured list, so it prints.
Title page
Sparse by design. Above threshold and carries a heading — kept without a second thought.
Fifteen sheets in. Ten sheets out.
Every sheet, at readable size, with its measured coverage where it was measured. Five are stamped and dropped before a sheet moves.
Print what
you meant.
- Sheets
- 15
- Printing
- 10
- Dropping
- 5
- Threshold
- 2.0%
- Mean ink
- 2.9%
- Cost avoided
- $0.06