If you own a physical copy of the compact size (3.5" x 5"), many users scan their own copy for personal use. While distributing that scan is illegal, keeping a personal PDF backup of a book you own is generally accepted for private use.

: Hosts historic and modern scans, such as the 1953 edition for weekdays and Shabbos. Online Interactive Versions

: Clear English rubrics explaining when to stand, bow, or recite specific passages silently.

: Offers an online version with commentary that provides Chassidic insights in English.

The Lubavitcher Rebbe, Rabbi Menachem Mendel Schneerson, emphasized that the physical Siddur you hold affects your concentration. While a is convenient for learning translation on a screen, the Rebbe discouraged using digital devices for the Amidah (silent standing prayer) because of the potential for screen interruptions (notifications) and the lack of a tangible object.