7.2 NOTICE:

This mod will still work in 7.2, but will have visual glitches on items that were improved with 7.2. For example, ARR Dragoon armor. I may patch this later, but right now I am not playing FFXIV.

This mod does not upscale new items added in 7.1 or 7.2. For example, 7.1/7.2 raid gear. 

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Please actually read what you are installing before you do it, there are several options and some of them are exclusive or dependent. 

For more detailed information view the associated Heliosphere pages

World Common and Housing:

Kartoffels World Common and Housing Textures
File Size: 2.88 GB download, ~ 4.59 GB unpacked

Kartoffels World Common and Housing Textures 2x Normals (This only includes the normals, please install the above Kartoffels World Common and Housing Textures as well)
File Size:  2.90 GB download, ~ 4.18 GB unpacked

World (All expansions but Dawntrail):

x1 Normals:
FIle Size: ~5.54GB download, ~ 7.20 GB unpacked

Diffuse:
FIle Size: ~14.2GB download, ~ 19.4 GB unpacked

x2 Normals (Not Available):
FIle Size: ~20GB download, ~ 25 GB unpacked

World Common and Housing:
Recommendation:
1. Install: Kartoffels World Common and Housing Textures. The common textures are much more impactful.
2. Optionally install the "Kartoffels World Common and Housing Textures 2x Normals" afterwards and set it to higher priority.

World:
Since FFXIV has introduced "detail maps" and a lot of straight upscales like grass/ground textures this type of mod is less needed. Therefore I recommend using the (low budget: x1 Normals) which is like 7GB first and seeing if you still have a problem, before downloading the diffuse. The diffuse and the normal are exclusive groups and will not overwrite each other.

Recommendation:
1. Kartoffels World Textures - Normals x1
2. Optionally install "Kartoffels World Textures - Diffuse"
3. Instead of Kartoffels World Textures - Normals x1 you can install "Kartoffels World Textures - Normals x2". I don't recommend it. (Not Available)

I find the normals more impactful for the world textures so I left them separate since the diffuse are about ~20GB.

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You can find my FFXIV mods here on the Nexus or on Heliosphere.

I offer heliosphere because it provides automatic updates for small differences. Which is a better user experience.
Heliosphere will have faster updates.
I offer nexus because it provides full integrity of the file structure. Which is better for modders.

PLEASE ONLY INSTALL THESE WITH PENUMBRA. THESE PACKS ARE TOO LARGE FOR TEXTOOLS.

Future Nexus Updates:
If you want speedy low effort updates please use heliosphere as I suggested. There is even a tool I made to create a de-obfuscated copy of the mods. 

Otherwise:
An update will consist of the Penumbra Mod's folder which you will OVERWRITE the previous version with.

Instructions:

• Download Update, open the zipped file to Penumbra folder (e.g. "Kartoffels Upscaled Equipment Textures").
• Verify that it has a "meta.json" file in it.
• Navigate to the Penumbra Mod folder (e.g "Kartoffels Upscaled Equipment Textures"). This can be done easily by clicking the mod in penumbra and navigating to "Edit Mod" and then clicking "Open Mod Directory".
• Drop the update in. It will be successful if you are asked to overwrite previous data (which you say "yes" to). E.g. "Overwrite meta.json with meta.json"? "Yes."
• Then in the "Edit Mod" section of the Penumbra Mod (e.g "Kartoffels Upscaled Equipment Textures") click "Reload Mod". The version number should update to reflect the update's version number (e.g. "1.2.3" becomes "1.2.4")
  

Everything I produce is open source and free use. If you appreciate my work you can donate to my kofi, but are in no way obliged to do so.

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Technical details for nerds:

Remember mass is before I dedupe in penumbra so no it doesn't match the actual size you get.

mass:
Kartoffels World Textures - Diffuse x1 = 25 GB @ BC1/BC7 x2
Kartoffels World Textures - Normals x1 = 9.8 GB @ BC7 x1
Kartoffels World Textures - Normals x2 = 37.2 GB @ BC7 x2
DIFFUSE [ type= BC1 or BC7; scale = x2; cleaning = 1x_BC1smooth2; upscaling = 4x_scalenx_90k, lollypop: downscaling = box]
NORMAL_x1 [ type= BC7; scale = x1; cleaning = 1x_BC1smooth2; upscaling = none; downscaling = none]
NORMAL_x2 [ type= BC7; scale = x2; cleaning = 1x_BC1smooth2; upscaling = 4x_scalenx_90k, lollypop; downscaling = box]
For more complex information please view the github:
FFXIV 7-0 Toolbox