Note: More about this digitization project in our post from April 30, 2015.
From Irish Central
The entire collection of Catholic parish register microfilms held by the National Library of Ireland (NLI) is now available online.
A dedicated website with over 370,000 digital images of the microfilm reels on which the parish registers are recorded is now available.
From the Irish Times
These parish register records are considered the single most important source of information on Irish family history prior to the 1901 census. Dating from the 1740s to the 1880s, they cover 1,086 parishes throughout the island of Ireland, and consist primarily of baptismal and marriage records.
The NLI has been working to digitise the microfilms for more than three years under what is described as its most ambitious digitisation programme to date.