HTML-CSS Certification
Validate semantic HTML5, CSS3, responsive design, Flexbox, CSS Grid, accessibility, and web layout skills through a proctored exam built for front-end and web designer roles.
Build confidence in your front-end skills with HTML Test Service from COITB. Our certification-focused testing validates semantic HTML5, CSS3, responsive design, Flexbox, CSS Grid, and accessibility through online proctored or authorized test-center exams. Passing candidates receive a verifiable digital badge that helps strengthen résumés, portfolios, LinkedIn profiles, and conversations with employers or clients seeking practical web talent.
COITB offers focused HTML-CSS testing, online proctoring, career pathways, and verifiable digital badges for web professionals.
Validate semantic HTML5, CSS3, responsive design, Flexbox, CSS Grid, accessibility, and web layout skills through a proctored exam built for front-end and web designer roles.
Show credibility to Upwork clients, agencies, and small-business buyers with an HTML-CSS credential designed for freelance web designers who need portable proof of practical front-end ability.
Support a transition from marketing, design, business operations, education, healthcare, or another field into web design with a certification that validates core HTML-CSS competence.
Help transitioning service members and post-9/11 veterans demonstrate civilian-ready web design skills through online proctored testing, digital badges, and eligibility-based funding pathways to verify.
Take the HTML Test Service remotely with online proctoring, ID verification, equipment requirements, and exam-day monitoring, or choose an authorized in-person test center when preferred.
Receive a portable, verifiable digital badge after passing, suitable for LinkedIn, résumés, portfolios, employer verification portals, background checks, and public credential confirmation.
Review the HTML-CSS credential scope, including semantic HTML5, modern CSS3, responsive design, Flexbox, CSS Grid, and accessibility. Candidates can compare role goals, experience level, and related credentials before choosing the right testing path.
COITB helps candidates demonstrate practical skills through recognized, independently focused credentialing.
Programs align to ISO/IEC 17024 standards for credible, structured professional assessment.
COITB validates skills independently and does not sell training or courses.
Online proctored exams offer flexible access for candidates across the U.S. and many international locations.
Digital badges help employers, clients, and verification partners confirm achievement quickly.
Meet the credentialing body behind COITB certifications.
COITB is a non-profit credentialing body focused on validating real-world technology skills for the modern IT workforce. Its mission is to elevate professional standards and help aspiring professionals, career changers, self-taught developers, bootcamp graduates, and experienced practitioners demonstrate capability in the technologies that power digital work. Through industry-recognized certifications across HTML-CSS, JavaScript, React, Python, MySQL, GPT, and Technical Sales, COITB provides a clear pathway for candidates to prove skills without requiring a computer science degree. COITB certifies only and does not provide training or courses, keeping the focus on independent, standards-aligned assessment and verifiable achievement for employers, clients, and workforce programs evaluating job-ready talent.
An HTML tester is used to evaluate whether a candidate understands practical HTML and related front-end fundamentals. In COITB’s HTML Test Service, the exam validates semantic HTML5, CSS3, responsive design, Flexbox, CSS Grid, accessibility, and web layout skills. The goal is to provide a verifiable credential that candidates can share with employers, clients, and professional networks.
Get clear answers about registration, testing options, and credential verification.
Aligned assessment standards for professional credentialing.
Independent organization focused on skills validation.
Portable credentials for employers and clients.
Share your certification goals, exam questions, or registration needs, and COITB support will guide you to the right next step.
You can also send us a quick email at support@coitb.org.
You can also send us a quick email at support@coitb.org.