List of image-sharing websites

This article presents a non-exhaustive list of notable image-sharing websites.

Active image-sharing websites

These also include sites that may still operate, but do not accept new users. Listed in chronological order of shutdown.

Legend:

File formats: the image or video formats allowed for uploading
IPTC support: support for the IPTC image header
Yes - IPTC headers are read upon upload and exposed via the web interface; properties such as captions and keywords are written back to the IPTC header and saved along with the photo when downloading or e-mailing it
Some - IPTC headers are read but information added via the web interface is not saved back to the IPTC header; or, IPTC headers are lost on resizing
Tags/keywords: the ability to add to and search by tags or keywords
Comments: the ability of users to leave comments on the photo
Yes - full control over who can leave comments (friends, registered users, non-registered users)
Some - users must register with the website to leave comments
Rating:
Yes - star rating: the ability to rate photos numerically, usually on a scale from 1 to 5
Some - thumbs up/down rating, "mark as favorite", or a rating system accessible only to logged-in users
Download originals:
Yes - anyone can download the original photo
Some - only photos of "pro" members can be downloaded
Notes/annotations: the ability to overlay textual notes to areas of a photo
Friendly URLs: human-readable URLs (e.g. /photos/greece_album/athens.jpg) vs. numeric identifiers (MemViewImage.asp?AID=5610943&IID=205062034&INUM=5&ICT=5&IPP=16)
Subscriptions
Some - RSS feeds and web interface
Yes - RSS feeds, web interface, plus photo updates can be sent by e-mail to non-registered members