https://ui8.net/mockup-bureau/products/chroma--holographic-gradients

• Chroma — a collection of 30 vibrant backgrounds in high resolution (4000x4000 px). Each background is a radiant blend of colors, meticulously designed to add a dynamic and modern touch to your presentations, social media posts, and creative projects. With a perfect balance of brightness and gradient transitions, these JPG and PNG files are ready to infuse your visuals with captivating energy.

https://ui8.net/samolevsky/products/blurry-gradient-shapes-collection

• Introducing you to the blurry gradient shapes, a magnificent collection that will reinvigorate your designs like never before!
• These freeform gradient shapes with custom-made grainy textures and motion blur effects aren’t just beautiful, they’re incredibly useful for your regular work.
• Incorporating these high-resolution vibrant elements into your design projects is as easy as drag and drop as each shape is isolated on a transparent background. This pack is compatible with all types of design software!

https://pixelbuddha.net/graphics/1739-spiritual-vibrations-gradients

The second volume of Spiritual Vibrations is pure mindfulness in every pixel. We're sure exploring these gradients will turn into a relaxing meditation. The collection of gradients features more than 90 JPG Backgrounds in high resolution. The files are print-ready (5000x5000 px), so the possibilities of employing them in your designs are endless. For a start, consider adding them to packaging (various bags and boxes), branding, stationery, prints, and posters of your own. For ready-made posters, make sure to check Spiritual Vibrations: Posters.