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Letter Spacing



Form Filler

The space between individual letters can be controlled to an accuracy of 1/1000 Em. This is useful for achieving layout effects such as fitting text into a particular area by reducing or expanding the spacing.

Letter spacing is measured in 'ems' with 1 em being the width of a capital letter 'M' in any font.

1 em

Letter Space & Word Space

Due to the nature of PDF documents, you can also control the gap between words caused by space characters though this is generally not as widely used as letter spacing.

Letter space

Word space

The letter spacing dialogue box uses units of 1/1000th Em.

You can control the gaps between letters and words by entering positive or negative values.

The word spacing value is ignored when text is fully justified.


  • Increase/decrease the letter spacing of selected text using the keyboard short cuts Ctrl+Shift=] and Ctrl+Shift+[

Using Letter Spacing

Select the Text tool and begin editing a block of text.

Select the characters whose spacing is to be changed.

In this example the spacing is being changed to 100/1000th em. This will change the gap to be 1/10th of the width of the letter 'M' in this font.

The additional spacing is clearly visible and the text now covers a wider area.

Using Word Spacing

Starting with the original text, the word spacing could be changed instead.

The word spacing is changed to 400/1000th em or 0.4 x width of 'M'.

The new, enlarged gap between the words is clearly visible.