Some YouTube stars are making millions from their videos, but which are making the most? Here we count down the top 10 richest YouTubers.

YouTube stars, or YouTubers as they're fondly known, are becoming hugely influencial among young internet users. Zoella, for example, broke records with her debut novel, which became the fasted selling debut novel of all time thanks to her huge, loyal and established fanbase garnered by posting videos on the video sharing site. She's become so famous through YouTube that she has launched a beauty range and is even getting a waxwork in Madame Tussauds. 

The latest YouTuber to hit the headlines was PewDiePie, who reportedly made $7.4 million in 2014. See also: YouTube vloggers are taking over the internet

YouTube stars can make money from adverts shown on their videos, as well as product placement within the videos themselves. Plus, in addition, popular YouTubers are being approached by publishers, filmmakers and marketers for other projects.

You'll notice that Zoella herself doesn't actually feature on this list, but we're certain that, thanks to her recent success and media coverage, it won't be long before we see her name (which is actually Zoe Sugg) joining the rest of these YouTube millionaires. We already know that and YouTuber boyfriend Alfie Deyes (The Pointless Blog) purchased a £1m home in Brighton earlier this year, so that should give you some idea of their success.

Most of the figures below are based on ads served on the videos themselves, and don't include other paid business and endorsement deals, so expect them to have earned even more. These figures come from Openslate, via VentureBeat.

If you're interested in earning extra cash, check out our article on how to make extra money online.

10. Annoying Orange

The irritating channel Annoying Orange is believed to make £2.1 million per year through YouTube. That's not including the cash the creators have collected since the web series became a TV show on Cartoon Network.

9. UberHaxorNova

The first video game-based YouTuber on the list is UberHaxorNova, or Nova as he is also known. He has a total of 2.6 million subscribers, who've helped him generate an estimated £2.2 million from YouTube per year so far.

8. Ray William Johnson

With an estimated net worth of around £2.5 million, vlogger Ray William Johnson secures a place in our list of the richest YouTube stars too. In March, Ray revealed that he would be retiring from making videos, but was relaunched later with a new host, Robby Motz.

7. TobyGames

The second gamer in our list is Toby Joe Turner, aka TobyGames. He's racked up around £2.6 million from YouTube by playing (and often losing/failing/dying in) video games including Minecraft. He also shares his animated web series, Tobuscus Adventures, on a his separate 'Tobuscus' channel.

6. Jenna Marbles

Hilarious vlogger Jenna Marbles is the first female to grace the list of the richest YouTubers, with an estimated £2.7 million and counting under her belt. Jenna Marbles (aka Jenna Mourney) has 14.2 million subscribers.

5. BluCollection

The face behind BluCollection remains unseen by subscribers, but that hasn't stopped xxx of them from following the BluCollection videos, which shows various kids toys being unpackaged and played with. This is believed to have earned £3 million from YouTube this year.  

4. DisneyCollectorBR

Similarly, DisneyCollectorBR, now called FunToyzCollector is a toy channel, but rather than being aimed at boys as BluCollection is, it's targeted mainly at girls. It's believed that the two channels are run by a husband and wife duo. DisneyCollectorBR is thought to be a tad more profitable than BluCollection, with an estimated $4.9 million in 2014, which is about £3.1 million.

3. Smosh

Next on the list is Smosh, made up of comedy duo Ian Andrew Hecox and Anthony Padilla. Their nerdy videos are believed to have earned them around £3.6 million.

2. Yogscast

In second place is Yogscast, formerly known as BlueXephos, which features another comedy duo. The pair, Simon and Lewis, play and mock indie games in their videos, which have earned them around £4.2 million last year.

1. PewDiePie

PewDiePie is believed to be the richest YouTube star around. He reportedly made a whopping $7.4 million in revenue in 2014, according to Swedish newspaper Expressen, prompting the YouTuber to upload the above video.

The 25-year-old Swedish YouTuber, whose real name is Felix Arvid Ulf Kjellberg, makes videos about gaming, and has racked up a total of 37 million subscribers (and counting) with video views exceeding 9 billion. He's set to release a book called This Book Loves You in October.