In 2023, around *** trillion South Korean won were spent on internet advertising seen on computers. This represents a slight increase from the previous year. Spending was forecast to increase over the next two years. Spending on online advertisements has simultaneously been growing, and has shown no signs of slowing down. In 2023, most of this spending was for mobile ads.
YouTube’s advertising dominance
YouTube dominates the online advertising space in South Korea, with a potential advertising reach of around ** million people as of January 2024, far surpassing other social media platforms. This was followed by Instagram, showing a trend favoring video and image-based social media platforms over more traditionally text-based ones. While the preference for YouTube and Instagram is reflected in spending on online video ads, such types of ads came second in terms of overall spending on different online ad formats.
The rise of influencer advertising
A 2023 survey found that over ** percent of respondents had purchased influencer-endorsed products, with YouTubers being the most common type of influencer people bought products from. This further aligns with the platform’s overall success as a social media marketing medium. While spending on influencer advertising was low overall in South Korea, the fact that entertainment value was the main driver for clicking on social media ads in 2023 is a useful foundation for the potential expansion of the influencer sector.
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KOBACO. (January 23, 2025). Spending on internet advertisements on computers in South Korea from 2015 to 2023 with forecasts up to 2025 (in trillion South Korean won) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 26, 2026, from /statistics/664415/south-korea-internet-advertising-revenue/
KOBACO. "Spending on internet advertisements on computers in South Korea from 2015 to 2023 with forecasts up to 2025 (in trillion South Korean won)." Chart. January 23, 2025. ÌÇÐÄÆÆ½â°æ. Accessed July 26, 2026. /statistics/664415/south-korea-internet-advertising-revenue/
KOBACO. (2025). Spending on internet advertisements on computers in South Korea from 2015 to 2023 with forecasts up to 2025 (in trillion South Korean won). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 26, 2026. /statistics/664415/south-korea-internet-advertising-revenue/
KOBACO. "Spending on Internet Advertisements on Computers in South Korea from 2015 to 2023 with Forecasts up to 2025 (in Trillion South Korean Won)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 23 Jan 2025, /statistics/664415/south-korea-internet-advertising-revenue/
KOBACO, Spending on internet advertisements on computers in South Korea from 2015 to 2023 with forecasts up to 2025 (in trillion South Korean won) ÌÇÐÄÆÆ½â°æ, /statistics/664415/south-korea-internet-advertising-revenue/ (last visited July 26, 2026)
Spending on internet advertisements on computers in South Korea from 2015 to 2023 with forecasts up to 2025 (in trillion South Korean won) [Graph], KOBACO, January 23, 2025. [Online]. Available: /statistics/664415/south-korea-internet-advertising-revenue/