There are many free image hosting where you can upload your images, however not all sites allow NSFW content.
The next list is a collection of the best free image hosting sites to upload NSFW (or SFW) images. All sites are good, with some advantages and disadvantages:
1. http://www.imagebam.com (can create a gallery/album)
2. https://webhotpix.com
3. https://imgpile.com
4. https://www.imagevenue.com (can create a gallery/album)
5. https://imgbb.com
6. https://freeimage.host
7. https://postimages.org (NSFW not allowed)


Upload to Imagebam
http://www.imagebam.com
This is maybe the best image hosting. They never delete your images. It allow to create a gallery from uploaded images, just check the Gallery Option.
1. Click on Select Files button and browse your hard disk to find the image(s) you want to upload.
2. On Select type option, select "Adult content".
3. On Thumbnail Options, select the size you want for the images. "Keep the aspect ratio" option is recommended.
4. Check the "Gallery" option if you are uploading more than 1 image (optional, but recommended).
5. Finally, click on UPLOAD NOW! button and wait until your images are uploaded.

6. Copy all the code inside the BB-Code box in the All at Once section or copy the BBCode from your images separately.
7. Paste the code in the topic you want. That's all!
8. If you want to delete your images, save or open the links located at the bottom of the page ("All Removal Links" section) before close it.

Upload to ImgPile
https://imgpile.com
Another good image hosting. You can upload multiple images at once and get the links for multiple purposes.

1. Click on Start Uploading button and browse your hard disk to find the image(s) you want to upload.
2. Check the "Not family safe upload" if you are uploading NSFW images.
3. Select a category (Optional).
4. Finally, click on Upload button and wait until your images are uploaded.

5. Click on Embed codes button.
6. A list of multiple links will be displayed.

If the image(s) is(are) too big, moderators may remove your image(s). Please use this option for not so big images.




