For possible future projects: PLEASE use the original sized images for editing and not e-hentai's downscaled 1280px horizontal res images. They are for viewing and niot for editing.
You can download the original resolution images via one of the following methods: 1. Torrent Download (if available; WARNING torrents not always contain the latest or the full res version of a gallery. Downscaled torrents normally have 1280x in their names) 2. Archive Download (click on "Archive Download" and "Download Original Archive"; e-hentai account and some GP or Credits required) In case you don't want to download an entire gallery: 3. The "Download Original" link at the bottom of each individual image (if there is noch such link the image on your screen and the original are identical) [e-hentai account and GP or Credits required now]
Additional Q&A: Q: Does that mean I have to upload different sized versions of my images? A: No. You just have to upload your original sized images. All other resolutions that e-hentai displays depending on the users settings will be created by e-hentai.