Diagram

Naperville, Illinois, United States

Crafting data-informed digital experiences for diverse industries

Diagram partners with forward-thinking organizations to create impactful, data-informed digital experiences. With over 25 years of experience, they focus on integrated web strategy and innovative CMS solutions, serving sectors such as healthcare, manufacturing, financial, municipal, non-profit, and education.

Their core services include digital strategy, data analysis, customer experience enhancement, and cloud platform development. They also specialize in artificial intelligence and agile delivery, utilizing platforms like Umbraco, Optimizely, and HubSpot to streamline workflows and personalize experiences.

Diagram has a proven track record with notable projects such as the CMS migration for Houlihan Lokey and the website relaunch for Rithm Capital. Their technical expertise in platforms like Optimizely ensures successful, on-budget site launches that meet stakeholder and user expectations.

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SERVICES

Capabilities

Services

What these services involve

Accessibility Remediation
Accessibility Remediation for web development buyers. Clear scope, measurable outcomes, and reliable delivery.
API and Systems Integration
API and Systems Integration for web development buyers. Clear scope, measurable outcomes, and reliable delivery.
Backend Development
Backend Development for web development buyers. Clear scope, measurable outcomes, and reliable delivery.
Frontend Development
Frontend Development for web development buyers. Clear scope, measurable outcomes, and reliable delivery.

Agency details

Team size
51-200 people

About this agency on Agency List

Diagram holds an Agency List Score of 96 out of 100.

That score is higher than 88% of the 36,919 agencies Agency List has assessed so far.

The Agency List Score measures how well an agency documents its work in public: named clients, quantified outcomes, and whether those outcomes are attributed to the agency rather than to the client.

It does not measure client satisfaction, price, or availability.

How the Agency List Score is measured

Assessment date

Agency List assessed Diagram in September 2026, reading 8 pages published on wearediagram.com.

The score reflects what Diagram had published by that date; anything published since has not been read.

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