Canva has copyright-free stickers, clipart, frames, design templates, and images. With a free account, you can also edit this copyright-free content (change color, crop, reshape, etc.).
For more images, check out the Library of Congress digital collection. Copyright information is provided on each item in the collection -- review this information for guidelines on appropriate usage.
"Did you know that more than 180,000 of the items in our Digital Collections are in the public domain? That means everyone has the freedom to enjoy and reuse these materials in almost limitless ways. The Library now makes it possible to download such items in the highest resolution available directly from the Digital Collections website. Search Digital Collections. No permission required. No restrictions on use."
Free poster making software. Some features available for purchase. Includes icons designed by certified science illustrators and 5,000+ templates to help you get started. All content is peer reviewed for scientific accuracy. Icons and templates are designed to look good together and customizable to fit your science.
This site allows users to design images, documents, presentations, and more. Use this site's stock images and text. This site is free and does not require a personal account to use.
Canva has image-editing tools, copyright-free stickers, clipart, frames, design templates, and images. With a free account, you can design presentations, flyers, documents, social media posts, and more.