Assessing the quality of work delivered by HTML5 developers requires a comprehensive evaluation process. Start by reviewing their previous projects and portfolio to gauge the level of complexity and creativity in their work. Ask for references and contact their previous clients or employers to gather feedback on their performance and satisfaction with the deliverables.
Additionally, consider conducting technical interviews or coding assessments to evaluate their coding standards, adherence to best practices, and problem-solving capabilities. Collaborating on a small test project can also provide firsthand experience of their coding style, diligence, and ability to deliver high-quality work within deadlines.