The “best” site to earn extra money depends on your skills, interests, and the amount of time you can commit. Here are some top options across various categories:

Freelancing and Gig Work
Microtasking
Online Marketplaces
Content Creation

Read Explainations here:

Freelancing and Gig Work

Fiverr Best for: Creative professions (designers, authors, marketers, etc.)Pros: Wide selection of categories, freedom in creating your own pricing and bundles.Cons: Competitive, might be tough to distinguish out without a good portfolio.
Upwork Best for: A wide range of professional services including programming, writing, and marketing.Pros: Large client base, possibility for long-term projects.Cons: Service costs, strict approval procedure for freelancers.
Freelancer Best for: Various freelancing tasks include writing, graphic design, and programming.Pros: Numerous job posts, bidding mechanism for freelancers.Cons: High competition, project expenses.

Microtasking

Amazon Mechanical Turk Best for: Completing short, uncomplicated jobs like data input, questionnaires, and Content moderation.Pros: Flexible work hours, easy duties.Cons: Low compensation per assignment, might be time-consuming to obtain a big revenue.
Clickworker Best for: Microtasks such as writing, translating, online research, and data processing.Pros: Flexible, many sorts of assignments accessible.

Cons: Inconsistent task availability, fluctuating pay rates.

Online Marketplaces

Etsy Best for: Selling handmade, antique products, and craft materials.
Pros: Niche market, creative control over items.
Cons: Fees for listing and selling products, rivalry within categories.

eBay Best for: Selling a variety of things, from electronics to collectibles.
Pros: Large consumer base, worldwide reach.
Cons: Listing costs, seller rivalry, requirement for delivery logistics.

Online Surveys and Market Research

Swagbucks Best for: Earning money through surveys, viewing movies, and buying online.

Pros: Multiple earning possibilities, cash back on purchases.
Cons: Low compensation per work, might be time-consuming.

Survey Junkie Best for: Participating in internet surveys.

Pros: Easy to get started, regular survey availability.
Cons: Low profit potential, not all surveys qualify.

Content Creation

YouTube Best for: Video content makers.
Pros: Potential for large revenues from advertisements, sponsorships, and memberships.
Cons: Requires major time effort, competition, and achieving monetization requirements.

Twitch Best for: Live broadcasting (game, artistic content, etc.)
Pros: Direct engagement with audience, numerous money streams (subscriptions, donations, advertisements).
Cons: Requires constant streaming schedule, competitive platform.