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Running Header Previewer

Test chapter titles against header widths; flag wrapping and truncation.

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A clear result starts here

Add your input or try the worked example.

Using Running Header Previewer

Test chapter titles against header widths; flag wrapping and truncation.

Use Try example to explore running header previewer, or enter your own running headers, one per line.
Set available width (mm), font size (pt), font. Read the field notes for supported values.
Choose Review input and inspect the result, including any review flags or unsupported cases.
Use the relevant download buttons to keep your result. CSV and report JSON preserve the available findings; original files are not changed.

Example

Running headers, one per line: Chapter 1 — A clear beginning
Chapter 2 — An exceptionally long chapter title that will need a shorter running header
Available width (mm): 110
Font size (pt): 11
Font: serif

Questions & answers

What does Running Header Previewer do?

Test chapter titles against header widths; flag wrapping and truncation.

What input does this tool support?

Running headers, one per line. Available width (mm). Font size (pt). Font

What should I check before using the result?

Uses the selected browser font and a 96-dpi CSS conversion. Publisher fonts, kerning and page composition can change the result.

Can I keep or share the result?

Yes. Use the result-specific downloads, CSV where available and report JSON. Downloads can contain your supplied information, so review the content before sharing. Processing runs in this browser; public pages also include the site’s approved advertising and optional analytics.