Recent literature in the field of L2 vocabulary assessment has advocated for the development of written receptive vocabulary tests such as Vocabulary Levels Tests (VLTs) that use: (a) meaning-recall item formats, (b) a minimum of 40 item counts per 1,000-frequency band to improve level estimates, and (c) lemmas (not word-families) as the lexical unit. With such recommendations in mind, this study presents the development and initial validation of Online written meaning-recall Spanish Vocabulary Levels Test (O-WSVLT), the first 120-item meaning-recall vocabulary levels test that measures knowledge of the 3,000 most frequent words in Spanish. A total of 209 L1-English learners of L2-Spanish participated in the study. Focusing on internal technical qualities of the test, Rasch measurement analysis was employed to provide evidence regarding four aspects of construct validity: content (i.e. representativeness and technical quality), substantive, structural, and generalizability. Results showed that (1) the items presented adequate spread of difficulty, (2) items demonstrated high levels of unidimensionality, and (3) O-WSVLT displayed an excellent fit to the Rasch model, with Rasch person and item reliability coefficients of 0.97 and 0.99 respectively. O-WSVLT fills a gap by providing L2 Spanish teachers and researchers with a reliable tool to measure students' written receptive meaning-recall vocabulary knowledge.