Mastering writing in English is crucial for English as a foreign language (EFL) learners; nevertheless, they encounter numerous difficulties, such as idea development, grammar complexities, vocabulary range, or even the pressure from writing anxiety. Consequently, many educators employ digital writing tools to enhance EFL learners’ English writing skills. This study aimed to explore Thai EFL university students’ perceptions of two digital writing tools, Paragraph Punch and ProWritingAid, as well as to investigate students’ writing performance. Participants consisted of 53 undergraduate EFL students enrolled in English education at a university in Thailand. Three research instruments were utilized: a 30-item questionnaire investigating participants’ perceptions of writing problems, a pre- and post-writing test assessing students’ writing development, and a semi-structured interview exploring students’ views on integrating digital writing tools in writing classes. The questionnaire findings emphasized various challenges students encountered in writing, including difficulties with idea development, grammar, and paragraph organization. The research further indicated a significant enhancement in students’ writing abilities after using digital writing tools. Additionally, students perceived that the improvements in their writing proficiency were due to the supportive guidance and real-time feedback provided by these digital writing tools. Nevertheless, there were concerns regarding excessive dependency on digital tools, the need for supplementary teacher feedback, and technological barriers.