tev
tev displays HDR images and color profiles across operating systems, including HDR output.
About tev
tev is an open-source HDR image viewer for Windows, macOS, and Linux that displays HDR output and interprets color profiles including ICC and CICP. It handles multiple file formats with gain maps, auxiliary channels, animation, and metadata beyond EXIF and XMP, and provides histograms, tonemaps, and error metrics in different color spaces.
Images can be opened by file dialog, drag-and-drop, or command line with options for layers, channels, and exposure. A second image can be selected as a reference for comparison, and the viewer can be controlled remotely over TCP, with protocol implementations in C++, Python, and Rust.
Key features
- Displays HDR images with ICC and CICP color profile support
- Shows HDR output on Windows, macOS, and Linux
- Compares selected image against right-clicked reference image
- Inspects pixels with histograms, tonemaps, and error metrics
- Opens specific layers and channels via command-line arguments
- Updates images remotely through TCP-based network protocol
Best for: People who need to inspect HDR images, color profiles, channels, and image comparisons on desktop systems.
Good for
- Supports HDR display across Windows, macOS, and Linux
- Handles gain maps, auxiliary channels, animation, and extended metadata
- Available via installers, package managers, or source build
tev at a glance
- Website
- github.com/Tom94/tev
- Category
- Online Tools › Image Tools
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Platforms
- Linux, macOS, Windows
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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tev FAQ
How do I open images in tev?
Use the file dialog, drag files into the window, or pass file paths as command-line arguments such as tev foo.exr bar.exr.
How do I compare two images?
Left-click an image to select it and right-click another image to select it as the reference for comparison.
How does remote control over the network work?
tev listens for a TCP-based protocol, by default only on localhost at 127.0.0.1:14158, with operations to open, create, update, close, and reload images and draw vector graphics.
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