How to check fonts for multilingual posters

A font that looks fine in English may be missing characters for another language. Accents can disappear, unfamiliar symbols can turn into empty boxes, or a second font can appear in the middle of a line without warning.

Check your actual poster text before you start arranging the design. The Installed Fonts tool shows fonts on your computer with a preview of text you provide, so you can narrow down your choices before moving into a poster app.

Check your fonts before laying out the poster

Open the Installed Fonts tool in Chrome or Edge on a computer. Other browsers may show a reduced version or may not be able to access installed fonts.
Enter a real sample of the poster copy in the preview. Include the languages, names, accents, punctuation, and numerals that will appear in the final design. A few sample letters may not reveal missing characters elsewhere in the text.
Review the available fonts against that same sample. Look closely at every character, not only the overall style. If your poster uses multiple writing systems, include a line in each one and a line that mixes them if the design will do that.
Shortlist a few fonts that look complete and readable. Try the actual headline and body copy, since a family that works for a short heading may be hard to read in a dense paragraph.

Useful samples depend on your languages. For example, include accented vowels and other special characters for French or Vietnamese, and test the specific characters and words needed for Arabic, Greek, Hindi, Japanese, or Chinese. Do not assume that a font covers an entire language just because it displays its basic alphabet.

What the preview can tell you

Every character appears, but some look different

The font may include the characters but draw them in a style that does not fit your poster. Compare the shape and weight of letters across the languages you need. Check whether accents sit clearly above or below the letters, and whether punctuation and numerals look consistent with the rest of the design.

A character is blank or appears as a box

The selected font may not have a drawing for that character. A box, sometimes called a missing-glyph symbol, is a strong warning that the font is not a safe choice for that text. Try another font and check the same sample again.

The line looks complete, but one character has a different style

Your browser may be filling a gap with a fallback font, a different font used when the selected one lacks a character. The text can look complete even when the chosen font does not contain every glyph. Check the sample in your poster app too, and watch for a sudden change in stroke weight, width, or letter shape.

Letters appear separately or in the wrong order

Some writing systems need more than individual character drawings. They may need connected letters, combined marks, or right-to-left text handling. The preview can help you screen fonts, but it cannot guarantee that your poster app will shape and position the text correctly. Test the phrase in the app you plan to use.

Resolve missing characters and layout problems

Try a different font. Compare another font with the same sample. Do not choose by appearance alone: make sure the full text displays and stays readable at the size planned for the poster.
Use a second font where needed. A design can use one family for Latin text and another for a script it does not cover. Apply the change to whole words or text blocks where possible, so the difference looks intentional rather than like an accidental substitution.
Check that the font is installed and enabled. On Windows 11, open Settings › Personalization › Fonts to review installed fonts. On macOS, open Font Book and check that the font is available and enabled. Install fonts only when you have the right to use them.
Restart the poster app after installing a font. Some apps only update their font lists when reopened. If the font still does not appear, check whether the app supports that font format and whether it uses fonts installed for your user account.
Test the finished text at its final size. Set the right direction for right-to-left text in the poster app, then inspect line breaks, accents, punctuation, and spacing. A font can look clear in a large preview but become difficult to read when reduced.
Check the exported poster. Open the exported image or document and confirm the characters and line order still look right. If you are printing, check a proof at the intended print size before making multiple copies.

Check more than font coverage

Multilingual copy often takes up a different amount of space from a translation or an English version. Leave room for longer words and extra lines, and avoid shrinking one language until it is much harder to read than the others. If the text does not fit, adjust the layout before reducing the type size too far.

Also check how the poster app handles the scripts you use. A browser preview and a design app can render the same font differently. The Installed Fonts tool is a useful way to compare fonts on your computer, but the final check is the text in your chosen app and its exported file.

The Installed Fonts tool works in Chrome and Edge on a computer. Test the complete poster copy before you commit to a layout or send it to print.