Question: Can you recommend a service that offers a large library of icons in various styles and formats for easy integration into my design workflow?

If you're looking for a library of icons in many styles and formats, Icons8 is a good option. It's got a big library of icons in 47 styles, including PNG and SVG formats, and an Iconizer tool to edit SVG icons. The site also has a premium illustration section and built-in AI tools like a Human Generator and Smart Upscaler, so it's a good all-purpose option for adding icons to your design pipeline.

Another option is IconKit, an AI-based icon maker that produces high-quality, customizable icons rapidly. The service is easy to use, letting you adjust colors and styles to match your brand, and uses a credit system for pricing. IconKit is good for businesses and side projects that need premium icons but don't want to pay a designer.

Last, Visily has a big icon library with more than 55,000 icons, plus millions of other images. It's a UI design tool good for creating high-fidelity wireframes and prototypes, with tools like Text to Diagram Beta and Sketch to Design. Visily supports real-time collaboration and interactive prototypes, too, so it's a good option for teams working on design projects.