In the current age, digital technology is rapidly changing daily routines, and young people today spend most of their time using various digital tools. Therefore, traditional reading of the printed page is being transformed into digital reading of online texts among students. Thus, online reading strategies have become crucial for their development in online reading performance. This study aimed to investigate the effects of online reading strategies used by lower secondary students on reading comprehension achievement. It conducted an online survey of reading strategies, involving three types of reading strategies, global, problem-solving, and support. The study recruited 4527 students at the lower secondary school level in Hungary. The study examined the students' attitudes toward literature and grammar in their native language (L1), use of online reading strategies, reading comprehension skills, and language arts achievement as well as examining the relations between them with various methods of analysis (descriptive/inferential, Rasch and path analyses). The findings demonstrated that the students' problem-solving strategies (from among the three reading strategies) exerted significant and positive impacts on reading comprehension. Additionally, the students’ attitudes toward L1 had a positively significant effect on their use of online reading strategies and language arts achievement and an indirect effect on reading comprehension skills. The study also found a significant relationship between language arts achievement and reading comprehension achievement. Therefore, this study is beneficial for language teachers in helping students improve reading comprehension skills.