Can I use any free font in a watermark?

Not automatically. "Free" is not a licence. The OFL FAQ and Google Fonts FAQ allow use in logos and graphics for OFL fonts and Google Fonts, but check the licence of every other font.

Do I have to credit a font under the SIL Open Font License?

No. The OFL FAQ says no acknowledgement is required when you use such a font in artwork.

Can I use Google Fonts on photos I sell?

Google's FAQ says you can use its fonts commercially and within any logo. Usage conditions are in each font's licence, and Product Sans is not available outside Google's own products.

Are copy and paste fonts really fonts?

No. Pasted text is made of characters, not of a font. Styled alphabets such as bold or script letters exist in Unicode's Mathematical Alphanumeric Symbols block, which Unicode says is intended only for mathematical or technical notation.

What font size should a watermark be?

No vendor sets one. Keep the text short and as large as the picture allows; in our calculations a 20-character line at 10% of the image width is only 0.42 mm tall on an iPhone 18 Pro.

How to choose a watermark font you are allowed to use

Fonts under the SIL Open Font License may be used in logos and other graphics without extra permission, according to the OFL FAQ, and Google says its fonts can be used within any logo. Check each font's own licence. Pasted "fonts" are styled characters, not fonts.

Published October 30, 2026. Drafted with AI assistance and checked against the sources linked on this page. How we write our guides.

Watermark fonts free to use: what the SIL Open Font License allows

A free download is not the same as a licence. Whether you may put a font on your photos depends on the licence that comes with that font. Two public statements are a useful starting point.

The SIL Open Font License (OFL) is a licence that font authors choose to release their fonts under. Its FAQ (version 1.1-update7, November 2023) answers the question of using a font to create logos or other graphics with "Yes". It lists logos, posters, business cards, stationery, video titling, signage and t-shirts as examples, and says no additional licence or permission is required. Two more answers in the same FAQ matter for a watermark: you remain the author and copyright holder of the graphic you make, and no acknowledgement of the font is required. The conditions of the licence apply when you redistribute, bundle or modify the font itself, not when you use it to draw a picture.

Google's Google Fonts FAQ says that fonts on Google Fonts are open source and can be used commercially and within any logo. It says the most common licence is the SIL Open Font License, with some fonts under the Apache or Ubuntu Font Licence. Product Sans is a separate case: Google says it owns that font and it is only available for use in Google products, by Google. The FAQ also says text in bitmap images or vector graphics made with Google Fonts can be modified, such as its slope, thickness and spacing, because the result is an image of text, not another font.

Those answers cover fonts under the OFL and fonts on Google Fonts only. For any other font, including a font that came with your computer or a "free for personal use" download, read its own licence before you use it on photos you sell or publish.

Free fonts you may use in a watermark: four examples

These four are examples, not a ranking. On its own licence page, Google Fonts shows each one as licensed under the SIL Open Font License, Version 1.1, and adds that you can use fonts under the Open Font License in your products and projects, print or digital, commercial or otherwise.

Bricolage Grotesque, designed by Mathieu Triay; it is the font we bundle in Fix Watermark.
Montserrat, designed by Julieta Ulanovsky, Sol Matas, Juan Pablo del Peral and Jacques Le Bailly.
Lora, designed by Cyreal.
Caveat, designed by Impallari Type.

Each link goes to that font's own licence page. Other fonts on Google Fonts can carry a different licence, as the FAQ above says, so open the licence page of whichever font you pick.

Watermark fonts for photography: what stays readable small

No vendor page gives a rule for a readable watermark size, so what follows is our advice and our measurements.

On a phone, a photo shown across the screen is small. In our calculations, a one-line mark set to 10% of the image width has a letter height (cap height) of 0.85 mm for 10 characters, 0.57 mm for 15 and 0.42 mm for 20 on an iPhone 18 Pro. We assumed a cap height of 0.7 em and an average character width of 0.55 em, so treat the numbers as a guide, not a standard. The lesson is that a short mark can be larger, and a long mark gets small quickly.

Keep the wording short. Your name is usually enough. See what to put in a watermark.
Choose a plain, sturdy font. We suggest a clear sans-serif or serif in a regular or bold weight over a thin or decorative face, because thin strokes disappear when a photo is shrunk.
Help it over busy areas. In Fix Watermark the Outline and Soft shadow controls are there for this; the help text for the shadow says it helps text stay readable on busy pictures.

If you set the mark in Lightroom, check its limits. Adobe's Lightroom Classic page says OpenType fonts are not supported in its text watermark. Adobe's Lightroom desktop page says that if the mobile app does not support the font you chose, it reverts to the default font on mobile.

Watermark font copy and paste: letters, not fonts

Text you paste is made of characters, not of a font file; a font only decides how those characters are drawn. Styled letters such as the bold, italic and script alphabets, for example, exist in Unicode as separate characters in the Mathematical Alphanumeric Symbols block (U+1D400 to U+1D7FF). The Unicode Standard, chapter 22 says the characters in this block are intended for use only in mathematical or technical notation, and not in nontechnical text. For the stylistic variants of certain Latin letters (blackletter, double-struck, italic and script) in the Letterlike Symbols block, the same chapter says these symbols should not be used in ordinary, nonscientific texts.

Unicode does not say such text is banned. It says what the characters are for. For a watermark, we suggest typing plain letters and choosing a real font: it keeps your name as ordinary text, and you decide how it looks through the font, weight and outline instead of through a notation block.

Fonts in Fix Watermark

The Fix Watermark photo tool offers four choices in its Font control. Bricolage Grotesque is a font we bundle under the SIL Open Font License 1.1. Sans-serif, Serif and Monospace draw with whichever matching font your device has, so they can look different on different devices. A Bold checkbox sets the weight. None of the four is a script font; for a handwritten look see how to turn your signature into a watermark. For where these controls fit in a whole design, read photography watermark examples.

Sources

Checked October 30, 2026.

Questions

Can I use any free font in a watermark?: Not automatically. "Free" is not a licence. The OFL FAQ and Google Fonts FAQ allow use in logos and graphics for OFL fonts and Google Fonts, but check the licence of every other font.
Do I have to credit a font under the SIL Open Font License?: No. The OFL FAQ says no acknowledgement is required when you use such a font in artwork.
Can I use Google Fonts on photos I sell?: Google's FAQ says you can use its fonts commercially and within any logo. Usage conditions are in each font's licence, and Product Sans is not available outside Google's own products.
Are copy and paste fonts really fonts?: No. Pasted text is made of characters, not of a font. Styled alphabets such as bold or script letters exist in Unicode's Mathematical Alphanumeric Symbols block, which Unicode says is intended only for mathematical or technical notation.
What font size should a watermark be?: No vendor sets one. Keep the text short and as large as the picture allows; in our calculations a 20-character line at 10% of the image width is only 0.42 mm tall on an iPhone 18 Pro.