This paper looks at how online archives have changed history research and writing. It shows how these tools have changed the old ways of looking into history. Online archives give historians amazing access to lots of primary sources like letters, books, pamphlets, magazines, and newspapers which helps in many different ways such as close reading thick description and algorithmic analysis. This change while making research bigger chance also brings some problems with data integrity metadata tagging and access politics. Using mixed methods this study puts together numbers and words to look at what historians think and feel about using digital archives. A survey tool with Likert scale items and open-ended questions helped collect information on what people see as the benefits and limits of digital archives. Descriptive statistics worked on the quantitative data but for the qualitative answers thematic analysis was applied. The findings reveal both the opportunities and challenges posed by digital archives, leaning toward the investment in digital infrastructure, training, and standardization to maintain the depth and authenticity of historical research. It thus adds to the growing field of digital humanities while illustrating how digital archives are shaping the future of historical scholarship.