Jataka Tales

The are one of the world's oldest and most influential collections of stories, detailing the previous lives of Siddhartha Gautama before he became the Buddha. While traditionally referred to as "550 stories," the most authoritative collection—the Pali Canon

The Timeless Wisdom of the 550 Jatakas: A Guide to Buddhist Teachings

Because of the size (thousands of pages), you will rarely find a legitimate, readable single PDF containing all 550 stories. Instead, the collection is usually distributed in volumes.

1. Internet Archive: You can find a collection of Jataka stories in English PDF on the Internet Archive website.
2. Google Books: Google Books has a vast collection of Jataka stories in English, including some PDF versions.
3. Buddhist eBooks: Websites like Buddhist eBooks and Sacred-Texts.com offer free eBooks and PDFs of Jataka stories.
4. Jataka Tales: The Jataka Tales website provides a comprehensive collection of Jataka stories in English, including PDFs.