View BASIS files in your browser
The texture that turns into whatever a graphics card reads. Open a .basis right here, each mipmap a page, and keep it as PNG. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your file opens at actual size, or shrunk to fit your screen.
- Actual size, or shrunk to fit
- Drag to pan • Pinch or scroll to zoom
- Fullscreen
- Export • Save as PNG or JPEG
About BASIS
Binomial, Rich Geldreich's and Stephanie Hurlburt's company, made Basis Universal and opened it with Google in 2019: one small texture that a game or a web page turns, as it loads, into the BC, ETC, ASTC or PVRTC blocks the device's graphics card reads.
A .basis file is a header, a list of its images and their mipmaps, and each one as ETC1S, small and close to a JPEG's quality, or UASTC, larger and close to the original. Most Basis textures now travel inside KTX2 files, and .basis is the file its encoder first wrote them as.
Filepeek decodes it in your browser with Basis Universal's own transcoder, each image and mipmap a page, and Export saves the page on show as PNG or JPEG.
Basis Universal texture
.basis
Format
- MIME type
- image/x-basis
- Made by
- Binomial, with Google
- Released
- 2019
Inside the file
- Kinds
- ETC1S and UASTC
- Holds
- Images and their mipmaps
- Turns into
- BC, ETC, ASTC or PVRTC
- Mostly found in
- KTX2
Opens in every browser
Filepeek decodes Basis Universal in Chrome, Edge, Firefox and Safari. No browser shows it by itself.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Apps that open BASIS
- WindowsBasis Universal's own basisu tool
- Macbasisu, as on Windows
- iPhone and iPadNo app opens it
- AndroidNo app opens it • Games load it themselves
Questions
Why won't image apps open .basis files?
A .basis is made to be turned into a graphics card's own blocks by a game or a web page, so only Basis Universal's tools read it. Filepeek turns each image and mipmap into a picture you can save as PNG.
How do I convert BASIS to PNG?
Open it, go to the page you want, then choose Export and Save as PNG.
What's the difference between .basis and KTX2?
Both can hold the same Basis Universal textures. KTX2 is the Khronos Group's file for them, which three.js and glTF use, and .basis is Basis Universal's own. Filepeek opens both.