The process of uploading images from the PC is very easy and every page explaining how to do it. Some allow upload over an image in one step and also upload images from other web addresses.
When the registration is not mandatory, is advisable to register anyway because the site server sends to mail a copy of the Internet address of the accommodation of the image.
Some of these sites can provide in addition to the direct link, some options with HTML code to insert directly into Forums, Blogs or social networks.
These are Web hosting providers that allow upload images to the Internet for free:
TinyPic LinkSupports formats: jpg, png, gif, y bmp
Maximum size of file: less than 1600 pixels in width and high
Resize image: Yes
Not require registration
Multiple languages
Imageneshack LinkSupports formats: jpg jpeg png gif bmp tif tiff
Maximum size of file: 1.5Mb
Resize image: Yes
Not require registration
Language: English
Subefotos LinkSupports formats: JPG, GIF, PNG
Maximum size of file: 2MB
Resize image: Yes
Not require registration
Language: Spanish
Imaxenes LinkSupports formats: jpg, jpeg, png, gif y bmp
Maximum size of file: 500 Kb
Resize image: Not
Not require registration
Language: Spanish
Subetela LinkSupports formats: jpg, png, bmp, gif
Maximum size of file:: 1 Mb
Resize image: Not
Not require registration
Language: Spanish
FreeImageHosting LinkSupports formats: gif, jpg, bmp, png
Maximum size of file: 3 Mb
Not require registration
Language: English
Photobucket LinkSupports formats: jpg, jpeg, gif, png, bmp
Maximum size of file:: ---
Requires registration and activation
Language: English