The renowned movie buff was known for his thumbs-up, thumbs-down TV reviews that influenced moviegoers across the US.
Yesterday, he had announced on his blog that he was undergoing radiation treatment after a recurrence of cancer.
Ebert was diagnosed with thyroid cancer in 2002 and later had surgery for cancer of the salivary gland.
He lost his chin and his ability to speak but later resumed writing full-time and eventually even returned to television.
Ebert started as a film critic for the Chicago Sun-Times in 1967.
In 1975 he became the first movie reviewer to get the Pulitzer Prize for criticism.
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