A court in Bangkok said Suwicha Thakho, 34, digitally altered images of King Bhumibol Adulyadej and his family and posted them on the internet.
Thailand's royal family is sheltered from public debate by some of the world's most stringent lese-majeste laws, as the police and army try to suppress what they fear is a rising tide of anti-monarchy sentiment.
One political activist was jailed for six years in November for an anti-monarchy speech she made just a stone's throw from the old royal palace last July.
But this insanity doesn't just apply to Thai citizens. Foreigners in Thailand are also at risk of falling afoul of these laws, no matter how inadvertent the offense might be.
Harry Nicolaides, an Australian writer jailed in Thailand for defaming its monarch, has returned home after being pardoned by the king and set free.
The charges arose from a passage in a largely unknown novel he wrote in 2005, of which only seven of 50 copies printed were ever sold.
Mr Nicolaides was met by his family in Melbourne. He would next see his mother in hospital, his father told reporters.
He told reporters he had been crying for eight hours, having only learnt moments before his flight that his mother had suffered a stroke while he was imprisoned.
"A few hours before that I was informed I had a royal pardon... A few hours before that I was climbing out of a sewerage tank that I fell into in the prison," AP quotes him as saying.
So, in the spirit of irreverence, I invite all readers here, Thai and non-Thai, to insult the royal family...just because it should be your right and because you can.