> For the complete documentation index, see [llms.txt](https://raia-software-inc.gitbook.io/tacview/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://raia-software-inc.gitbook.io/tacview/customization/terrain/terrain-textures/grid-based-texture-tiles.md).

# Grid-Based Texture Tiles

The simplest way to display custom ground textures is to store tiles of 1 by 1 degree in the following folders:

`%ProgramData%\Tacview\Data\Terrain\Textures\` or

`%APPDATA%\Tacview\Data\Terrain\Textures\`

The `SRTM` naming convention is used, where the file name begins with the latitude and longitude of the tile’s lower-left corner (for example, `S09E114.jpg`)

Tacview supports textures of any size as long as they are recorded in `WebP`, `PNG` or `JPEG` files. Both 24-bit and 32-bit formats are supported, which means that you can use the alpha channel of `WebP` and `PNG` files to smoothly blend an overlay on top of Tacview native terrain.

A suffix `T`/`B`/`C` (for example, `N42E008T.png`) can be added for each tile where

* `T` -> Transparent (50% merge with tacview default map)
* `B` -> Adaptive black outlines
* `C` -> Adaptive color outlines

Example texture packs are available in the [add-ons](https://www.tacview.net/download/addons/) section of the website.

See the [terrain tools](/tacview/customization/terrain/terrain-tools.md) which are available to help downloading and displaying grid-based texture files.

Make sure the option `Options` → `Terrain Display Mode` → `Custom Textures` is enabled.

![Terrain Textures - Menu Option](https://681332907-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZ9tiJ3xbT7zyJ4FlZiMM%2Fuploads%2Fgit-blob-05df3b7ff99083cba8cc775e0cf299ab4aa42c9a%2Fterrain-textures-menu-option.png?alt=media)

Read on to learn how to add a texture map.