Audit Typeset Column Widths Against Comfortable Character Measures
A column width in points means nothing until you divide by the typeface’s average character advance. Check every layout column against your maximum character-per-line target before locking a page grid.
1 · page layout | column width points | average character width points
FIRST-LOAD
Input is processed locally and a draft is saved automatically in this browser profile when storage is available. Reset to sample clears that draft; Pro history has its own clear button. A state link encodes your inputs in its URL: share only non-sensitive rows. Browser history, clipboard and anyone receiving the link may retain it. Optional AI use below leaves this device; it is not required.
Data note: Everything runs in this browser tab on the typesetting measure matrix: your page layout | column width points | average character width points stays on this device, nothing is uploaded, and the reading is rebuilt only when you press run.
Perspective: Before: A small point size in a single full-width column easily exceeds 80 characters per line and tires the eye. After: the typesetting measure matrix shows the working beside each named row so the reader can change the assumption and inspect the consequence.
2 · Read the typesetting measure matrix
Typographic line-measure arithmetic from user-supplied point dimensions. Not editorial or accessibility compliance certification; inspect actual composed proofs with real copy and hyphenation settings.
Paid layer: typesetting measure matrix print and history
one-time step · the free reading above stays complete
Free tier
- one complete typesetting measure matrix run in the app
- three samples plus unlimited article-demo runs
- unwatermarked result text and an explicit, user-triggered state link
What $4 one-time adds
- print the typesetting measure matrix with its row workings
- CSV of characters per line and row explanations
- last five reading summaries saved in this browser profile
$4 once for repeated filing of the typesetting measure matrix, not for a better answer. Illustrative time basis: avoiding one five-minute manual reformat per saved reading; no market-price or guaranteed-savings claim.
Local history (this device)
- No saved runs yet — your first run files here.
Checkout is unavailable until a payment link is configured. The optional unlock is browser-local, profile-scoped and best-effort, not server-verified access. Clearing browser data can remove it; there is no account or cross-device recovery.
Boundary and sources
Typographic line-measure arithmetic from user-supplied point dimensions. Not editorial or accessibility compliance certification; inspect actual composed proofs with real copy and hyphenation settings.
- Method: Bringhurst’s classic book-typography ceiling is 66 characters per line; adjust the setting to match your publication’s format.
- All sample records are invented examples. The app does not fetch measurements, policies, files or personal records.
- Google’s official pricing page, fetched 2026-09-29, lists free-tier access including AI Studio. Optional formatting only; limits and availability can change. Free-tier content may be used to improve products. Never paste private records there.
Mechanism: competence-autonomy-loop
Optional AI formatting, not calculation
For this typesetting measure matrix, use the free AI Studio interface only if available to you, with no paid API key. Manual entry completes the same workflow for free. Supply only fictional or non-sensitive notes. Review its output against the source; never paste unresolved questions into the numeric rows.
Format my non-sensitive notes for a typesetting measure matrix. Return plain rows only: page layout | column width points | average character width points. Preserve supplied quantities exactly. Do not guess missing values; list questions separately. Do not calculate or add advice. I will check every row before pasting into the local tool.
Accepted schema: page layout | column width points | average character width points. No AI response is executed as code.