Here are 15 websites for free image downloads, along with their notable features:

Unsplash

High-quality images with a vast collection from professional photographers.

https://unsplash.com/

Pixabay

Large database of free images, vectors, and illustrations, with an advanced search feature.

https://pixabay.com/

Pexels

Curated collection of free stock photos with a user-friendly interface.

https://www.pexels.com/

Freepik

Offers free photos, vectors, icons, and PSD files with customizable designs.

https://www.freepik.com/

Burst by Shopify

Free stock photos for e-commerce and business-related purposes.

https://burst.shopify.com/

StockSnap

Provides high-resolution stock photos with a powerful search feature and trending images.

https://stocksnap.io/

Reshot

Handpicked collection of unique and authentic stock photos, featuring non-traditional shots.

https://www.reshot.com/

Gratisography

Quirky and creative high-resolution photos by Ryan McGuire, updated weekly.

https://gratisography.com/

Picjumbo

Wide range of free photos, including business, lifestyle, food, and abstract categories.

https://picjumbo.com/

SplitShire

Unique and artistic photos suitable for personal and commercial projects.

https://www.splitshire.com/

Life of Pix

Curated collection of high-resolution photos with no copyright restrictions.

https://www.lifeofpix.com/

Kaboompics

Offers a wide range of free stock photos, including lifestyle, food, and fashion categories.

https://kaboompics.com/

ISO Republic

Free stock photos and videos covering various themes, including nature, technology, and people.

https://isorepublic.com/

Rawpixel

Extensive collection of free and premium stock photos, illustrations, and vectors.

https://www.rawpixel.com/

Morguefile

Archive of free high-resolution stock photos with a community-driven approach.

https://morguefile.com/

These websites offer a range of features such as advanced search options, curated collections, diverse categories, and unique images to cater to different needs and preferences. Always ensure to review the licensing terms on each website to understand the specific usage permissions.