How Onmark works

Onmark turns a brand guide into rules a machine can follow, then uses those rules in two places: where designs are made, and where they’re checked.

The four parts

Use the tabs, or the arrow keys, to move between them.

1 Brand Profile

Your guide, turned into rules you review.

Upload a brand guide PDF, logos, fonts and up to 20 example designs. Onmark builds a structured profile: the palette with allowed pairings and contrast, typefaces and their roles, logo versions with minimum size and clear space, approved layouts, photo style, and tone of voice with words to use and avoid. You review and correct it in a simple editor. No guide yet? A short questionnaire builds a starter profile.

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2 Create

On-brand posts, flyers and slides from a sentence.

Type a request or pick a format: Instagram post, story, flyer, YouTube thumbnail, WhatsApp status, slide or banner. Onmark returns three options built from your brand’s templates, with copy written in your brand’s voice and images chosen or generated to match your photo style. Everything stays editable, and the brand rules stay locked so only the owner can change them.

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3 Check

A Brand Score and a list of fixes for any design.

Upload any design, made anywhere. In seconds Onmark returns a Brand Score out of 100 and a marked-up list of problems: off-palette colours, wrong fonts, a stretched or crowded logo, low contrast, text too small for a phone, and off-tone or misspelt copy. One tap fixes the simple ones.

Brand ScoreBrand Score 62 out of 100

Fix 3 issues to reach 94.

Logo crowdedLogo too close to the edge. It needs clear space of one letter height.
Wrong headline fontHeadline font is Georgia. The brand headline font is Clash Display.
Off-palette backgroundBackground #1C2A8C isn’t in the palette. The closest brand colour is Deep Indigo #2433A6.

Copy matches the brand voice: warm, short, and says “meals”, not “food”.

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4 Approve and track

Sign-off links and a dashboard of what went out.

Send a design for sign-off with a link. The approver sees the score and comments. A dashboard shows what each person or branch made, average scores over time and the most common mistakes, so you know what to teach or lock down next.

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What a check looks for

Each rule in your Brand Profile becomes a test. Anything a rule can measure is measured with plain code.

Rule	How it’s measured
Colour	Distance of every colour in the design from your palette.
Contrast	Contrast ratio of each block of text against its background.
Fonts	Typefaces in the design matched against your brand’s typefaces and their roles.
Logo	Logo version, size and clear space around it.
Text size	Whether text is large enough to read on a phone.
Copy	Spelling, and your brand’s words to use and avoid.
Layout and tone	Judged by an AI review where plain rules can’t measure, with the reason shown.

Features as JSON

Works alongside Canva

Canva Brand Kit stores your logos, colours and fonts inside Canva. Onmark checks designs made anywhere, including Canva, against your full guide, so your team keeps the tools it already uses.

Canva’s Brand Kit help page, checked 4 November 2026 (opens another site)

What’s live

Checked 4 November 2026.

LiveBrand ProfileYour guide, turned into rules you review.
LiveCreateOn-brand posts, flyers and slides from a sentence.
LiveCheckA Brand Score and a list of fixes for any design.
LiveApprove and trackSign-off links and a dashboard of what went out.

See how on-brand your designs are

Send ten recent designs. You’ll get a Brand Score for each one and a marked-up list of what to fix.

Get a free Brand Audit