Show HN: I ported COLMAP (photogrammetry) to the browser in WASM and WebGPU
offlinetools.io
I’m launching the COLMAP browser workspace today!
offlinetools.io/colmap
It’s a free and fully local browser implementation of the popular open-source photogrammetry software COLMAP.
No download, no sign-up, no installation, no setup, no cloud processing — everything happens and stays on the user’s machine.
More info: offlinetools.io/colmap-landing
Why is it relevant? Bringing COLMAP to the browser is technically challenging because of the browser’s additional constraints.
This is the first implementation that reaches native-class performance and, in some cases, even outperforms the native build.
It produces standard COLMAP-compatible outputs such as camera poses, sparse point clouds, keypoints and masks for downstream workflows including Gaussian Splatting.
The local nature of this tool makes it ideal for data-sensitive verticals such as police, medical, law enforcement, insurance, or simply users who want the tool but don't want to bother with installs and cloud.
About me: I’m a former Google engineer with around 20 years of experience in 3D computer vision.