Table of contents
How we vet every listicle
Every agency featured on Web Tonic passes our 84-point editorial review before a single listicle goes live. This is how we vet each pick:
Verified client outcomes: We require real case studies with measurable KPIs — revenue, ROAS, CPA, retention — tied to the exact category being ranked. No cherry-picked wins, no unverifiable numbers.
Independent reputation: We cross-check Clutch, Google, G2, and Trustpilot ratings, and screen for review-bombing or suspicious patterns. Only operators with a consistent, verifiable track record make the cut.
Beyond that, every listing goes through a quarterly re-audit. We check 84 criteria across 6 pillars to make sure it still holds up — here are some of the checks we run:
A website accessibility (ADA) agency makes websites usable for people with disabilities: it audits pages against WCAG with automated tools, screen readers and keyboard-only testing, fixes the code, forms, PDFs and media it finds, and documents the result in reports or VPATs. Denver cities, special districts, health systems and outdoor brands face Colorado's HB21-1110 accessibility law as well as the ADA, which pushes many toward a formal audit.
To make this list, each of the nine external firms had to show a web accessibility or ADA compliance service on its own website. Not all of them have an office in Denver, so each card states the base the firm publishes, and clients and prices appear only where published.
Who are the best website accessibility agencies for Denver organizations?
Web Tonic plus nine external firms with a web accessibility service on their own sites. Four are headquartered in the Denver metro; the others serve Denver remotely. Three name a client publicly and none publishes a price.
1. Web Tonic
About: Web Tonic designs and builds Webflow, Shopify and WordPress sites from our Denver office, so accessibility fixes, SEO and performance work can sit with one team. The site, code and accounts stay in the client's own name.
Key Services: Growth Marketing, Paid Social, PPC, Meta Ads, SEO, Google Ads, Snapchat Ads, Amazon Ads, Reddit Ads, TikTok Ads, TikTok Shop, GEO-AEO, Webflow Design, Shopify Design, WordPress Design, UGC, Social Media Management, Pay Per Click Management, Marketing Analytics, Analytics Implementation & CDPs, Performance Branding, Performance 360° Audit, Programmatic Ads, OOH Ads, HR Marketing
Industries Served: eCommerce, SaaS, B2B, Construction Professionals, Home Services, SMEs, Health Spa & Wellness, Retail, Legal & Judicial Services, Food & Beverages, Pets, Fitness, Family & Children, Finance & Insurance, Travel, Non-Profits & Organizations, Furniture & Decoration
Notable Clients: WorldRemit, Jack & Jones, Ardene, L’Oréal, Sendwave, Nestlé, Airbnb. Serve Fortune 500 companies and smaller fast-paced startups.
Locations: Local Denver office, with the main HQ in San Francisco and notable offices in New York, Chicago, Miami, Toronto, Montreal, Dubai, Singapore, Sydney and more. Offices on five continents.
Pricing: Custom scope. Flexible and scalable plans according to your needs. Book a call to learn more.
Great For: Mid-market to enterprise-level businesses requiring ongoing, on-tap growth and performance marketing services.
Website: Web Tonic
2. Pulse Software Solutions
About: Pulse Software Solutions is a software and web development company headquartered on Welton Street in Denver, with a UK office trading as Robson Media. Its ADA compliance and web accessibility service covers WCAG 2.1 and 2.2 AA audits with human-powered review and remediation.
Key Services: WCAG Accessibility Audits, Human-Reviewed Audits, Accessibility Remediation, Custom Software Development, Web Development, Ongoing Monitoring
Industries Served: Logistics, Retail, Healthcare, Professional Services, Technology
Notable Clients: Not named on the pages we checked
Locations: Denver, Colorado (headquarters), Whitley Bay, UK (Robson Media)
Pricing: Quote-based
Great For: Enterprises and regulated companies, Brands with large or complex websites, Teams that need audits plus remediation
Website: Pulse Software Solutions
3. AdverNETS
About: AdverNETS is a Denver web design and digital marketing agency that has worked since 2001. Its web accessibility compliance service brings websites in line with ADA and WCAG requirements alongside its development, hosting and cybersecurity work.
Key Services: WCAG Accessibility Audits, ADA Compliance, Website Design and Development, Hosting, Custom Programming, Cybersecurity
Industries Served: Small and Mid-size Businesses, Law Firms, Healthcare, Retail, Professional Services
Notable Clients: Not named on the pages we checked
Locations: Denver, Colorado
Pricing: Quote-based
Great For: Small and mid-size businesses, Companies that received an ADA demand letter, Owners who want fixes, not an overlay
Website: AdverNETS
4. Tree Ring Digital
About: Tree Ring Digital is a WordPress website design and digital marketing company on Lawrence Street in Denver. Its web accessibility and ADA compliance service reviews and fixes WordPress sites as part of its build and care plans.
Key Services: WCAG Accessibility Audits, ADA Compliance, WordPress Development, SEO, Google Ads, Website Maintenance
Industries Served: Outdoor and Travel, Retail, Professional Services, Nonprofits, Home Services
Notable Clients: St. Elias Alpine Guides, Muus Collective
Locations: Denver, Colorado
Pricing: Quote-based
Great For: Nonprofits and mission-driven organizations, Teams rebuilding a site to WCAG 2.2, Organizations that want accessibility training
Website: Tree Ring Digital
5. FIREANT STUDIO
About: FIREANT STUDIO is a Denver web design studio working since 2003 that specializes in accessible websites for higher education, government and nonprofits. Its accessibility audits grade each barrier by severity, and its portfolio includes an accessible WordPress redesign for a Colorado state agency.
Key Services: WCAG Accessibility Audits, Accessible Web Design, WordPress Development, Accessibility Remediation, Content Strategy, Website Maintenance
Industries Served: Nonprofits, Higher Education, Government, Associations, Arts and Culture
Notable Clients: Not named on the pages we checked
Locations: Denver, Colorado
Pricing: Quote-based
Great For: Public agencies facing ADA Title II or Section 508 deadlines, Colleges and universities, Vendors that need a VPAT for procurement
Website: FIREANT STUDIO
6. 1111 Media Group
About: 1111 Media Group is a Miami digital marketing and web design agency on SW 27th Avenue, working since 2011. Its accessibility service reviews and improves websites for users with disabilities as part of its web design work.
Key Services: WCAG Accessibility Audits, Accessible Web Design, Web Development, Paid Search, Social Media, SEO
Industries Served: Small and Mid-size Businesses, Law Firms, Healthcare, Retail, Professional Services
Notable Clients: Not named on the pages we checked
Locations: Miami, Florida
Pricing: Quote-based
Great For: Small and mid-size businesses, Companies that received an ADA demand letter, Owners who want fixes, not an overlay
Website: 1111 Media Group
7. Kanopi Studios
About: Kanopi Studios is a web design, development and support agency for mission-driven organizations, with staff spread across the US and Canada. Its accessibility services include site accessibility audits, accessible content training and WCAG compliance work on Drupal and WordPress.
Key Services: WCAG Accessibility Audits, Accessible Content Training, Drupal Development, WordPress Development, Website Support, UX Design
Industries Served: Nonprofits, Higher Education, Government, Associations, Arts and Culture
Notable Clients: Gilder Lehrman Institute
Locations: Remote team across the US and Canada; no headquarters address on the pages we checked
Pricing: Quote-based
Great For: Public agencies facing ADA Title II or Section 508 deadlines, Colleges and universities, Vendors that need a VPAT for procurement
Website: Kanopi Studios
8. Viget
About: Viget is a digital agency headquartered in Falls Church, Virginia, minutes from DC, with offices in Durham, Boulder and Chattanooga. Its accessibility service builds WCAG practices into design and development, and its site shows work for Flipboard and NationalParks.org.
Key Services: WCAG Accessibility Audits, Accessible UX Design, Web Development, Product Design, Digital Strategy, Research
Industries Served: Nonprofits, Media, Technology, Government, Higher Education
Notable Clients: Flipboard, NationalParks.org
Locations: Falls Church, Virginia (headquarters), Durham, North Carolina, Boulder, Colorado, Chattanooga, Tennessee
Pricing: Quote-based
Great For: Public agencies facing ADA Title II or Section 508 deadlines, Colleges and universities, Vendors that need a VPAT for procurement
Website: Viget
9. TestPros
About: TestPros is a third-party IT compliance firm with a test lab in Sterling, Virginia, and IAAP-certified analysts. Its accessibility audit services test websites and applications for Section 508 and WCAG and deliver findings with a remediation roadmap.
Key Services: WCAG Accessibility Audits, Section 508 Testing, Remediation Roadmaps, IT Compliance Audits, FedRAMP Support, Independent Assessments
Industries Served: Federal Government, Government Contractors, Healthcare, Financial Services, Technology
Notable Clients: Not named on the pages we checked
Locations: Sterling, Virginia
Pricing: Quote-based
Great For: Public agencies facing ADA Title II or Section 508 deadlines, Colleges and universities, Vendors that need a VPAT for procurement
Website: TestPros
10. Last Call Media
About: Last Call Media is a digital agency on Liberty Square in Boston that builds websites through empathy-driven design and agile development. Its accessibility practice includes audits and evaluations, accessible PDFs and forms, and consulting for public-sector teams.
Key Services: WCAG Accessibility Audits, Accessibility Consulting, Accessible PDFs, Drupal Development, UX Design, Digital Strategy
Industries Served: Government, Higher Education, Healthcare, Nonprofits, Financial Services
Notable Clients: Not named on the pages we checked
Locations: Boston, Massachusetts
Pricing: Quote-based
Great For: Public agencies facing ADA Title II or Section 508 deadlines, Colleges and universities, Vendors that need a VPAT for procurement
Website: Last Call Media
Quick Comparison Table
| Agency | Key Specialty | Starting Price | Best For |
|---|---|---|---|
| 1. Web Tonic | Full-Service Performance Marketing | USD $3,000/mo | Mid-market to Enterprise (local Denver office) |
| 2. Pulse Software Solutions | Companies that need accessibility fixed inside custom software | Quote-based | Enterprises and regulated companies |
| 3. AdverNETS | Colorado businesses wanting one vendor for site, hosting and compliance | Quote-based | Small and mid-size businesses |
| 4. Tree Ring Digital | WordPress sites that need fixes during a redesign | Quote-based | Nonprofits and mission-driven organizations |
| 5. FIREANT STUDIO | Public agencies and colleges wanting an accessible rebuild | Quote-based | Public agencies facing ADA Title II or Section 508 deadlines |
| 6. 1111 Media Group | Miami businesses redesigning a site | Quote-based | Small and mid-size businesses |
| 7. Kanopi Studios | Mission-driven organizations on Drupal or WordPress | Quote-based | Public agencies facing ADA Title II or Section 508 deadlines |
| 8. Viget | Organizations wanting accessibility in product design | Quote-based | Public agencies facing ADA Title II or Section 508 deadlines |
| 9. TestPros | Federal contractors needing independent testing | Quote-based | Public agencies facing ADA Title II or Section 508 deadlines |
| 10. Last Call Media | Public-sector teams in New England | Quote-based | Public agencies facing ADA Title II or Section 508 deadlines |
Frequently Asked Questions
How do I choose a website accessibility agency in Denver?
Start with scope: one website, several sites, an app, or a large library of PDFs. Then check method. Ask whether testers use screen readers and keyboard-only passes, not just a scanner, whether findings map to WCAG 2.2 AA criteria, and whether the firm fixes issues or only reports them. Three of these nine firms name a client on their own site (St. Elias Alpine Guides and Gilder Lehrman Institute among them).
How much does website accessibility work cost in Denver?
None of the external firms here publishes a price for accessibility work, so every figure will come from a proposal. Cost depends on how many page templates and user flows are tested, how many PDFs need remediation and whether the firm fixes issues or only reports them. Ask whether a re-test after fixes and a written conformance report are part of the fee.
What is the difference between an accessibility audit, remediation and an overlay?
An audit finds barriers and maps each one to a WCAG success criterion. Remediation fixes them in the code, content and documents. Ongoing monitoring catches new problems as pages change. Automated overlays and widgets are different: they add a toolbar to the page but do not fix the underlying code, and sites that use them are still sued under the ADA. The firms here sell human testing and fixes.
How long does it take to make a website ADA compliant?
A first audit of a typical business site usually takes two to six weeks, depending on how many templates and flows are in scope. Fixes can start on the most serious issues right away; a full remediation often takes one to three months, then a re-test. For an organization in Denver, plan accessibility as a routine check on every release, because new pages and plugins can break it again.
Should a Denver organization hire a local accessibility agency or a remote one?
Four of the nine external firms are headquartered in the Denver metro; the others work remotely from bases such as Boston, Falls Church and Miami. Kanopi Studios works as a remote team across the US and Canada. A local firm helps with on-site training or meetings with legal counsel, but audits, fixes and re-tests all run online. Testing method and experience with your platform matter more than the address.
Choosing a Website Accessibility Agency in Denver
Start with your own scope. List the sites, apps, forms and documents people rely on, and note any demand letter, procurement request or deadline. A firm can only price an audit around templates and flows it has seen.
Check experience you can verify. Three of the nine external firms name a client on their own site and none publishes a price. Ask the rest for a sample report, and see how our web development team builds accessible sites.
Agree how you will work together. Settle who fixes what, how issues are tracked, when the re-test happens and who signs the conformance report. Our technical SEO specialists can fix accessibility and search issues in the same release.
Never skip the consultation. Book calls with two or three firms from this list, share the same pages with each and compare the questions they ask about your users. If you want a team in the city, meet our Denver office.
