Social media feeds have been flooded with creative, and sometimes convincing, content.
Journalist Ben Black was "shocked" to discover his fake news from five years ago used by AI.
People in Cardiff describe some of the pranks they have fallen for on April Fools' Day
Humorous headlines once flooded the papers on 1 April. Experts explain why it does not happen today.
In Ticino, Switzerland, a particularly mild winter produced an exceptional spaghetti harvest.
The Lincolnite's prank story about a Christmas market at RAF Scampton is criticised as "racist".
A prank letter displayed in its Gloucester North delivery office announced an 11% pay rise for staff.
The film-maker, who won an Oscar for Women Talking, got a letter asking her to "mail it back".