Bath Film Festival's F-Rating added to online film site IMDb Published duration 5 March 2017

image copyright Plymouth Arts Centre image caption Plymouth Arts Centre adopted the F-Rating in January 2016

A feminist film classification created to highlight the lack of women working in the movie industry is now being used on the IMDb film information site.

The F-Rating was introduced by Bath Film Festival director Holly Tarquini in 2014 and has been taken up by more than 40 UK cinemas and festivals.

IMDb boss Col Needham said: "The F-Rating is a great way to highlight women on screen and behind the camera."

Ms Tarquini said 21,800 films had been tagged with the F-Rating on IMDb.

Film information site IMDb gets more than 250 million visitors per month.

image copyright Bath Film Festival image caption Holly Tarquini said IMDb founder and chief executive Col Needham was "very supportive" of the F-Rating

Ms Tarquini said: "The F-Rating is intended to make people talk about the representation of women on and off screen.

"It's exciting when new organisations decide to join us in shining a light both on the brilliant work women are doing in film and on how far the film industry lags behind most other industries, when it comes to providing equal opportunities to women.

"But our real goal is to reach the stage when the F-Rating is redundant because 50% of the stories we see on screen are told by and about film's unfairly under-represented half of the population - women."

The F-Rating is a classification for any film which:

is directed by a woman

is written by a woman

features significant women on screen in their own right

Newest adopter to the campaign is the Barbican Cinema in London.

Curator Gali Gold said the rating was "a simple and effective way to signpost films where the stories are told by and about women and to highlight the issue of gender imbalance within the film industry".

Anna Navas, from Plymouth Arts Centre, said she added the F-Rating "as soon as I heard about it".

"The F-Rating is such a clear, fun, accessible way of highlighting women on screen it felt like a no-brainer," she said.

image copyright QFT Belfast image caption The F-Rating was first used at the Bath Film Festival in 2014 and has been taken up by 40 other cinemas and festivals

The F-Rating was inspired by US cartoonist Alison Bechdel, whose 1985 comic strip Dykes to Watch Out For featured two women discussing "movies".

The cartoon became known as the "Bechdel Test" with the characters deciding a film should include at least two women who talk to each other about something besides a man.

Some films meet all three criteria with significant women on screen in their own right and are written and directed by women. Those with the triple rating include:

Frozen - Disney film

American Honey

Bridget Jones's Baby

Other films with the rating include those directed or written by women

Animal Farm - directed by Joy Batchelor

Kung Fu Panda 2 - directed by Jennifer Yuh Nelson

The Girl on the Train - directed by Erin Cressida Wilson

Freaky Friday - written by Mary Rodgers

Gentlemen Prefer Blondes - written by Anita Loos

Metropolis - written by Thea Van Harbou