A brand has a beautiful wordmark — a distinctive set of letters drawn once, for the logo. Then someone needs to set a headline, a slide title, a poster in that same style… and there's no font. Just five letters, locked inside a logo.
The usual options are both bad: commission a type designer to draw a full alphabet (weeks, serious money), or trace the few letters you have and hand-fake the rest (inconsistent, and it shows). There's a third way now — and the honest version of it is more interesting than "AI made a font."
SourceBack's font tool has a complete-font mode. Give it an image of the letters your brand actually has, and it:
real outlines, vectorised straight from the artwork. 2. Verifies each traced letter against your image — it renders the letter back from the built font and overlays it on your source, producing a match score per letter. If a trace drifts, it's flagged, not shipped silently. 3. Measures the design system — stroke weight, cap height, proportions, the recurring corner treatments. 4. Constructs the missing letters (the rest of A–Z, plus digits) to match that system, so the whole alphabet reads as one typeface.
Crucially, the report tells you which glyphs are exact tracings of your letters and which are constructed to match. No silent inference, no pretending the machine "knows" what your missing letters look like — it's honest about the line between your letterforms and the ones it built to fit them.
CUBIT's logo is five letters — C, U, B, I, T — a heavy geometric wordmark with a rounded "foot" on the bottom-left of each letter and a chamfered (cut) corner on the top-right. That's the entire brand alphabet.
Run it through complete-font mode and: the five real letters are traced exactly (verified at ~0.99 match against the source), the design system is measured off them, and the other 21 letters plus digits are constructed in the same language — same weight, same rounded foot, same chamfered shoulder — into an installable .ttf. Five letters in, a full typeface out, with the five originals pixel-faithful to the mark.
Being straight about it:
CUBIT) are built from consistent strokes and corners, so the constructed letters match closely. Humanist or hand-drawn styles are harder to extend faithfully.
not guessing.
starting point that reads as one family, not a claim that they're "your" letters. For a final, hinted retail typeface you'd still bring a type designer; for setting on-brand headlines and decks, it's genuinely usable today.
The tool traces the letterforms you supply and have the rights to. It will not help you reproduce a commercial or licensed typeface you don't own — and making small edits to a copied font doesn't make it non-infringing. This is for turning your own mark into your own font.
note them in order. 2. Open the font tool: sourceback.app → Image → Font, and turn on "Build a complete font." 3. Check the free preview — the specimen and the detected-letters map — then download the .ttf, install it, and type.
I only have the letters in my logo — is that enough? Yes, that's the whole point of complete-font mode: the letters you have are traced exactly and the rest are constructed to match. More letters give the constructor more of your style to work from, but even a short wordmark works.
Will the made-up letters look right? For geometric/blocky styles, closely — they share your measured weight, proportions and corner motifs. The report shows you which letters are traced vs constructed so there are no surprises, and the free specimen lets you judge before installing.
Can I turn any font's sample into a font? No — and you shouldn't. The tool is for letterforms you own the rights to; it won't reproduce a licensed typeface.
Is my image private? Your upload and the result auto-delete within 12 hours, and nothing is reused.
Turn your wordmark into a complete font — free preview first: sourceback.app.