Stars have been quick to pay tribute to the actor and comedian Robin Williams after his death in California.
Eddie Izzard ?tweeted: "Robin Williams has died and I am very sad. From every comedian here at the Edinburgh Fringe Festival, we salute him & we say goodbye."
Steve Carell, star of The 40-year-old Virgin and the US version of The Office, said: "Robin Williams made the world a little bit better. RIP."
Comedian Jason Manford ?tweeted: "RIP Robin Williams. So unbelievably sad about this news. One of the funniest talented comedians the world has ever produced."
DJ Chris Moyles remembered Williams's breakthrough role in Mork & Mindy when he tweeted: "Rest in peace Robin Williams. Nanu Nanu. Shazbot."
Anthony McPartlin, one half of presenting duo Ant & Dec, said: "Robin Williams RIP. X My childhood was made very happy because of him. Thoughts and love to his family. So so sad."
Phillip Schofield spoke of his shock when he tweeted: "Oh my god! Can't believe Robin Williams has died in an 'apparent suicide' tragic news and the loss of a comedy genius."
X Factor judge David Walliams said he had the "huge pleasure" of spending time with Williams in Los Angeles with fellow Little Britain star Matt Lucas.
He said on Twitter: "I was so in awe of him but he was so sweet and humble.
"We saw Robin Williams perform unannounced at comedy clubs in LA. His talent was breathtaking & I have never seen such love from an audience."
Family Guy creator Seth MacFarlane said: "The world just got a lot less funny. Robin Williams is a tragic loss."
And comedian Simon Pegg called him a "true great", posting a YouTube link to a scene from Good Will Hunting.
Stephen Fry said: "Devastating news about @robinwilliams - knew him a little and liked him a whole lot more. A brain wired like no other and so so kind."
And Rory Bremner said: "Really saddened to hear Robin Williams has died. He was a Catherine wheel of comic energy - brilliant, irrepressible, inspired. A true genius.
"His imagination was like electricity - flowed through him, lit him up, sparked wildly, consumed him. He inspired my generation."
Film director Ron Howard recalled that he saw Mork's genesis as they worked together on the US series Happy Days.
In a message posted online, he said: "We lost Robin - first witnessed his genius as he created Mork before our eyes in two hours on set. A Force. A Sweet Soul. A Brilliant Artist."
Comedy film-maker Judd Apatow said: "Isn't it mind-blowing how many times and ways Robin Williams touched your life with his work? For so long. What a gift he gave."
Omid Djalili recalled that Williams mistook him for Alexei Sayle each time they met. "Had the pleasure of Robin Williams' company five times. Each time he exclaimed 'Alexei!" and gave me a hug. I never corrected him," he said.
Hollywood actor Michael Keaton said: "Just so damn sad. This guy made so many people happy. There will always be that."
Comedian and actor Billy Connolly, a close friend of Williams, said: "Robin was both my friend and my hero, a unique talent and a kind and generous man; the world will be a much poorer place without him."
Danny DeVito, who worked with Williams in Death To Smoochy, said: "So sad to think about this. Hard to speak. Hard to say. Hard to take.
"All I can think about is what a joy he was to be with. I'm devastated. My heart is broken by this news."
Forest Whitaker wrote on Facebook: "The world has lost a special soul. Robin Williams touched our hearts, he gave us laughter, he gave us joy, he made us think about the impossible.
"I'm blessed to have been able to walk inside his universe. He forever changed this world with his presence. My thoughts and prayers go out to his family and to all those who hold him dear."
Comedienne-turned-psychologist Pamela Stephenson Connolly said: "Robin was one of the most uniquely brilliant and complicated comic artists the world has ever known. As a performer, he navigated a dangerous high wire at every single moment - with no safety net."
The wife of comedy star Billy Connolly added: "My husband and I loved and admired him deeply and will miss him in a way that is beyond words."
"Genie, you're free," The Academy of Motion Picture Arts and Sciences tweeted, with a photo of the blue genie - voiced by Williams in the Disney film - embracing Aladdin.
Actor Jackie Chan spoke of his shock, saying: "I just don't believe it. I don't know him well but it seems like I've lost a best friend, and I think everybody feels the same thing."
The star, in London for a screening of new film Chinese Zodiac, said: "He was one of a kind. He made everybody happy with his movies, his TV shows. So many flash back in my mind.
"I'll never forget, I was at the Oscars green room and there was a guy in front of me. I was shocked, it was Robin Williams and he said, 'Jackie Chan!' We talked, and my mind went blank. It's Robin Williams, what shall I say? I tried to think of something to say, he had already said 10 words, and then he said, 'Bye bye' and he was gone.
"I asked his office if I could have his autograph and he sent it to me. I was so happy. It's now in my office when I walk in."
Mrs Doubtfire director Chris Columbus said: "We have lost one of our most inspired and gifted comic minds, as well as one of this generation's greatest actors.
"To watch Robin work, was a magical and special privilege. His performances were unlike anything any of us had ever seen, they came from some spiritual and otherworldly place. He truly was one of the few people who deserved the title of 'genius'."
Sally Field, who also starred in the movie, said: "I feel stunned and so sad about Robin. I'm sad for the world of comedy. And so very sad for his family. And I'm sad for Robin.
"He always lit up when he was able to make people laugh, and he made them laugh his whole life long, tirelessly. He was one of a kind. There will not be another. Please God, let him now rest in peace."