11 Proven Ways to Earn Extra Money Online

Although the proliferation of online shopping and streaming subscriptions may suggest it, the internet isn't just a place to spend money. You can also make serious money online, often in your spare time, whether it's just an occasional venture or a regular pursuit you build into a lucrative side hustle. These are proven ways to earn extra money online. 

Several companies conduct market research online and will pay you for taking surveys. According to CBS News, popular platforms include Swagbucks, Survey Junkie, and Branded Research. 

If you have extra storage space in your home, you can rent it out through Store At My House, a company which calls itself "the Airbnb of storage." You can rent out your pool by the hour on Swimply or your garage or parking space on SpotHero. If you have a lot of extra space on your property, Neighbor.com, will let you rent out parking space for RVs, boats, or multiple vehicles.

Love four-legged friends? Rover allows you to set your own schedule and earn extra cash by walking dogs in your neighborhood.

Notaries public are appointed by each state to witness the signing of official documents and the taking of oaths. To become authorized in your state, you need to pass an exam that's given regularly throughout the year. Some notaries public who work online can make hundreds or even thousands of dollars a month, CNBC Make It reports.

Many companies are looking for remote workers to assist with tasks such as inputting data, checking records, and updating databases, CBS News reports. All you need is good attention to detail and the ability to stay engaged during repetitive work. Most online job boards, including FlexJobs and Indeed, have numerous listings for data entry gigs.

If you have expertise in a certain area, online tutoring is a good way to earn extra cash. You can find a range of opportunities on sites like Chegg, Skooli, and TutorMe.

If you're fluent in another language, you can earn cash on the side by translating materials for businesses and charging by the page. The site Smartcat was established to match translators with people needing their services; you can also advertise your skills on sites like Fiverr, Upwork, and Freelancer.com.

Companies are actively looking for people who can help them use AI to generate content that will promote their brands. "We've seen high demand for this category of work," Margaret Lilani, vice president of talent solutions at work marketplace Upwork, told CNBC, adding that employers "are looking to build up the supply of freelancers who can support this demand." You can charge anywhere from $20 to $100 an hour for the service.

Companies constantly need people to test out their new sites and apps and evaluate how well (or if) they work. UserTesting.com can match you with companies who are looking for testers.

If you've got a good eye, you can turn it into extra cash. The site Fine Art America allows you to upload your photos to sell as merchandise such as prints, T-shirts, and phone cases. You can also sell your images as stock photography on sites like SmugMug, 500px, and PhotoShelter. 

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If your vehicle is just sitting around, you can put it to work making money for you. Sites like Getaround and Turo let you rent out your car by the hour or day.