HTML-CSS Certification
Validate semantic HTML5, CSS3, responsive layouts, Flexbox, CSS Grid, and accessibility skills through a proctored exam designed for web designers and front-end candidates.
Advance your tech career with Online Certifications 2026 from COITB, a non-profit credentialing body validating real-world skills in HTML-CSS, JavaScript, React, Python, MySQL, GPT, and technical sales. Choose flexible online proctored exams or authorized test centers, use a free practice assessment to gauge readiness, and earn a verifiable digital badge when you pass for employer-ready proof.

Explore certification exams that validate practical technology skills through proctored testing and verifiable digital badges.
Validate semantic HTML5, CSS3, responsive layouts, Flexbox, CSS Grid, and accessibility skills through a proctored exam designed for web designers and front-end candidates.
Demonstrate modern JavaScript capability, including ES6+, DOM manipulation, async/await, Fetch API, and functional programming for front-end, full-stack, and Node.js development roles.
Prove ReactJS skills in component architecture, JSX, hooks, state management, routing, and modern application development through an online proctored certification exam.
Validate Python 3 programming, object-oriented development, standard library usage, exception handling, and production engineering skills for developer, automation, data, and AI roles.
Show capability in relational database design, SQL querying, joins, indexes, stored procedures, and MySQL backend engineering for database and back-end development positions.
Certify skills in generative AI, GPT implementation, prompt engineering, AI application design, and responsible AI practices for emerging product and engineering roles.

Review the available COITB credentials and match them to your target role, whether front-end development, Python automation, databases, GPT, or technical sales. Use the free practice assessment to understand readiness before registering.
COITB helps candidates demonstrate capability through focused, verifiable certification exams.
COITB focuses on skill validation, not course sales, supporting unbiased credentialing decisions.
Programs align with ISO/IEC 17024 principles for credible, standards-minded certification design and assessment practices.
Remote proctored exams help U.S. and international candidates certify around demanding schedules.
Credentials validate practical technologies employers recognize, from front-end development to AI and databases.
Credentialing programs built for modern technology career growth.
COITB is a non-profit credentialing body focused on validating real-world technology skills for the digital age. From its headquarters in Oklahoma City, COITB supports candidates across the United States and many international locations through online remote-proctored exams and authorized test centers. The organization’s mission is to elevate professional standards and help build a future-ready IT workforce by offering certification-only programs; it does not sell training or courses. Its credentials cover practical domains including UI design, application development, AI, backend development, and technical sales, giving aspiring professionals, bootcamp graduates, self-taught developers, veterans, and career changers a structured way to demonstrate capability.
The best certification depends on your career goal, but strong online credentials verify practical skills through an assessed, proctored process and a shareable proof of achievement. COITB offers tracks for front-end development, back-end development, AI, databases, and technical sales. Career changers often start with HTML-CSS, JavaScript, Python, or Technical Sales, while experienced developers may choose React, MySQL, or GPT.
Get help with registration, exam options, and credential questions.
Aligned to recognized credentialing program principles.
Credentialing-focused organization validating real-world IT skills.
Portable proof for employers and background checks.
Reach COITB support for registration guidance, current exam pricing, practice assessment links, and credential questions.
You can also send us a quick email at support@coitb.org.
You can also send us a quick email at support@coitb.org.