Steve James said: "That's what made me want to do the movie: the way in which his life had this extraordinary desire for adventure and then, of course, he did his share of suffering and soldiering on. And all of that informed the kind of critic he became. It informed his reviews. It informed everything about who he was and what we came to collectively love about him."[11]
On April 4, 2013, following Ebert's death, the filmmakers expressed their condolences and promised to finish the film.[12][13][14] On November 20, 2013, an Indiegogo campaign was launched to raise money for the film. Over $150,000 was raised.[15]
Life Itself has received universal acclaim from critics.[22][23] On Rotten Tomatoes, the film holds a rating of 98% based on 206 reviews, with an average rating of 8.40/10; the critics' consensus states: "Rich in detail and warmly affectionate, Life Itself offers a joyful yet poignant tribute to a critical cinematic legacy."[24] On Metacritic, the documentary has a score of 87 out of 100, based on 35 critics, indicating "universal acclaim".[25]
Ann Hornaday of The Washington Post gave the film 3/4 stars and wrote: "You may not have agreed with Ebert's reviews — you may not have thought he was such a nice guy. But if you aren't moved by "Life Itself," you ought to have your heart examined."[26] Kate Muir of The Times wrote: "Fans of the great populist film critic Roger Ebert will be both moved and amused by Life Itself".[27]Peter Travers of Rolling Stone wrote: "Though Life Itself is a warts-and-all portrait Ebert didn't live to review, my guess is his thumbs would be shooting upward. Mine sure are."[28]
Mark Kermode, writing for The Observer, gave it a score of 4/5 stars and wrote: "this lovely, insightful film is a splendidly watchable tribute to a truly cinematic life. I laughed, I cried; I was inspired and uplifted."[29]Peter Bradshaw of The Guardian also gave the film 4/5 stars, describing it as "an inspiring documentary for critics, and anyone who loves cinema."[30] Geoffrey Macnab of The Independent also gave the film 4/5 stars, writing: "A film about a movie critic might not sound an attractive proposition, but Steve James's biographical documentary... is deeply moving."[31]
Antonia Quirke of the Financial Times was more critical, giving it a score of 2/5 and writing: "It's undercooked (we're not even told what movies he loved as a child) and a clip of the great New Yorker critic Pauline Kael speaking made me sit bolt upright thinking "Now you're talking.""[32] Kristy Puchko of CinemaBlend gave the film 2.5/5 stars, writing: "Life Itself is ultimately nowhere near as inspiring, entertaining, or mirth-filled as the man himself. And for me, that is a profound and unforgivable disappointment."[33]