Image-sharing platform Pinterest forecast slower revenue growth for the third quarter on Tuesday, signaling tough competition for digital ‌advertising from bigger players including Meta's Instagram, sending its ‌shares down 6% in extended trading. Pinterest has been expanding Performance+, its AI-powered suite for ​advertisers, to attract more marketers by helping them optimize and scale their campaigns with less manual effort. As Meta continues to improve its Advantage+ ad automation tools, Reddit launched a broadly similar product and with ads becoming ‌a larger focus for ⁠OpenAI, competition is expected to increase further.