FAQ
Frequently asked questions
Everything you might want to know about identifying fonts from images, how the matching works, and the free fonts we recommend.
About the tool
What is Font Finder AI?
A free font finder that identifies a typeface from an image. Upload or paste a screenshot, and the tool compares the letterforms against a pre-computed index of 1,935 open-source Google Fonts and ranks the closest matches. It also suggests free alternatives to commercial typefaces and provides copy-paste CSS for every result.
Is Font Finder AI really free?
Yes. The identifier, the full font library, the alternative finder and all tools are free with no account, sign-up, watermark or usage limits.
Do I need to create an account?
No account is required. Everything works in the browser on a single page load.
What browsers are supported?
Current versions of Chrome, Edge, Firefox and Safari. The tool uses canvas APIs and Web DecompressionStream, both available in all modern browsers.
How identification works
How does the font identification work?
The image is binarised into ink and background, connected-component analysis isolates each letter, and every glyph is normalised into a 16×16 binary signature. Those signatures are compared to signatures computed from the real files of all 1,935 fonts, in regular and bold weights. The top candidates are then re-rendered as whole words and compared to your crop for final ranking.
How accurate is the identification?
On a clean, front-facing crop of five or more letters, the top match is usually correct and the runner-ups are close. Accuracy depends mostly on the sample: crisp, upright, plain lettering at a readable size. Low resolution, heavy effects, perspective and stylised logo work reduce confidence.
Does it work on handwriting?
Yes. Connected script and handwriting are matched with a whole-word rendering comparison rather than per-letter shapes. The tool renders your phrase in candidate script fonts and ranks the closest renders.
What does the confidence percentage mean?
It's a normalised ranking of how close each candidate is relative to the field — not an absolute probability. A few high-confidence results mean the letterforms are distinctive; a flat spread means they're generic.
Why did the tool read the wrong letters?
Glyph detection can misread stylised, skewed or degraded lettering. Use the letter-review step to correct the characters, then re-run the identification — the corrected pass is usually exact.
Can you identify system fonts like Arial, Calibri or Segoe UI?
Those aren't in the open-source library, but the engine finds the closest free equivalent — Arimo for Arial, Carlito for Calibri, and so on — and links you to it. It's the same for SF Pro and other platform faces.
Does colour or dark mode affect the result?
No. Only the ink shapes are compared, and the binarisation step handles light-on-dark automatically. Colour, gradients and backgrounds are ignored once the text is isolated.
Images and privacy
Are my images uploaded anywhere?
Never. The image is decoded and processed entirely in your browser with canvas APIs and a pre-loaded signature index. There is no upload endpoint, no server-side processing and no analytics on image content.
What image formats and sizes work?
PNG, JPG and WebP, up to 12 MB. Larger files are rejected to keep the in-browser processing fast.
Is there a limit on how many fonts I can identify?
No limits. Because processing happens locally, identifying a hundred images is exactly as free as identifying one.
Can I paste an image instead of uploading a file?
Yes — press Ctrl/Cmd + V anywhere on the page with an image on your clipboard, or use the 'Try the sample image' button to explore the tool without any file at all.
Fonts and licensing
What fonts are in the library?
All 1,935 families from the Google Fonts open-source catalogue — sans-serif, serif, display, handwriting and monospace, in the weights and italics each family ships with.
Can I use these fonts commercially?
Yes. Every font in the library is an open-source Google Font, licensed under the SIL Open Font License or a compatible licence, which permits commercial use in websites, apps, documents and print without payment or attribution. Always check the individual font's licence on its page if you need certainty.
What happens if the identified font is a paid font?
Many brand and print faces are commercial. When a match resembles a paid typeface in our directory, the results panel lists the closest free alternatives — legally safe stand-ins matched by measured letter shape.
Are the free alternatives really 'the same' as the paid font?
No font is an identical clone of another, and we don't claim these are. They're the closest faces in the open-source library by four measured proportions — x-height, stem weight, contrast and width. At reading sizes they're typically indistinguishable.
Can I download the fonts for desktop software?
Each font page links to the official Google Fonts specimen, where you can download the static files for Photoshop, Illustrator, Word or any desktop tool.
Do you host or redistribute the font files?
We index them and link to them, but the font files themselves are served by Google Fonts. We don't redistribute typeface files.
Using the results
How do I use the CSS snippet?
Add the @import line to the top of your stylesheet, then apply the font-family rule to the elements you want styled. Fonts load from Google Fonts' global CDN with on-demand weights and display=swap fallback.
Can I use these fonts in Tailwind CSS?
Yes. Add the family to your theme (for example font-sans: ['Inter', ...]) and it will apply across all default utilities.
Do the results work offline?
The identification itself works after the first visit, since the signature index is cached. Loading the matched Google Fonts for previews requires a connection, as fonts are served by Google.
How do I get an even better match?
Crop to a single line of 5+ letters, mix cases, avoid outlines and shadows, and use a front-facing high-contrast sample. Correct any misread letters in the review step and re-run.
Technical and data
Where does the signature index come from?
We computed it ourselves from the Google Fonts source files: each font's outlines were rendered, segmented and converted into 16×16 binary signatures for 62 characters, in regular and bold weights, plus the measured x-height, stem weight, contrast and width used for shape-based similarity.
How much data does the tool download?
The signature index is about 2 MB compressed, served once and cached. The page itself is small and static.
Do you use cookies or track me?
We don't use advertising or tracking cookies. The only local storage used is your theme preference. See the privacy policy for details.
How often is the font library updated?
The index is rebuilt when Google Fonts publishes new families or weights. New releases appear on the next index refresh.
Still have a question?
Something not covered here? Get in touch and we'll do our best to help.