OpenLiDARViewerv0.6.9 · AGPL-3.0
Drone LiDAR, terrestrial laser scans, phone captures and billion-point streaming datasets open straight in a browser tab. Navigate, measure, analyse terrain and export results that carry their coverage, provenance and limits with them. Nothing is uploaded.
Hover the console. The probe reports whether a laser return sits under the cursor.
Every number OpenLiDARViewer reports carries the coverage that produced it, the method version, and the evidence level behind the method. When it can’t stand behind an export, it watermarks it or refuses. That is the whole design.
Most tools hand you a number. OpenLiDARViewer hands you the number, the coverage that produced it, the method version, and the evidence level behind the method. Each export is stamped, watermarked or refused according to the evidence behind it.
Decoding, rendering, analysis and export run in your browser. There is no server to upload to, no account, no telemetry of your data. Out-of-core files stream from origin-private storage on your own disk, and a computed terrain core is kept there too, so asking for the same analysis again restores it instead of recomputing it.
Every scientific product carries a level on a seven-rung ladder, E0 to E6. Seventeen claims agree with an independent implementation. None claims field accuracy yet, and the register says so in plain words.
WebGPU rendering with an automatic WebGL 2 fallback, worker-based LAZ decoding, Eye Dome Lighting, and a view-dependent streaming scheduler with bounded memory. A billion-point COPC or EPT cloud opens without loading the whole file.
Everything below is reachable in the current release. Items the app marks review or preview are exploratory by design. Code that ships without a user path is recorded in the project’s unreachable-module register rather than described here.
Ground classification, a gridded DTM with per-cell confidence and hold-out RMSE, then DSM, canopy height, slope, hillshade, TPI and VRM, all under one Terrain Assessment verdict: Good, Preview, Limited or Blocked.
Distance, polyline, area, height, angle, slope, cross-section profile and cut/fill volume. Each value carries a red, yellow or green badge for how well real returns support its endpoints, and the badge travels with the session file.
Orbit, Walk, Fly and Pan with WASD and mouse-look; Top, Iso, Oblique and Planar presets; a Plan view; saved views and shareable view links that carry no scan data.
Analytical isolines and cartographic generalisation, opt-in terrain-aware simplification, contours drawn over the cloud as a derived layer. One Output panel; exports pass a gate that can only downgrade.
Rigid ICP epoch alignment, defaulting to yaw plus horizontal translation so the fit cannot absorb the vertical signal it is measuring. The change raster and the thresholded gain and loss volumes are validated at E4, and a level of detection so noise below the survey’s own precision is not reported as movement.
Point count, density, spacing, attributes and integrity diagnostics, each figure naming the population it describes. A Scan QA report that states what it does not establish, multi-page PDF reports from three templates, and a findings ledger that persists across the session.
No product changed evidence level this cycle. One measurement method changed, three paths got faster or more durable, and the register stands where it stood: 34 claims, 17 at E4, none at E5.
A lasso stockpile no longer sums the points that happen to be loaded. Each grid cell is clipped to the polygon and contributes the median surface within it, so the figure stops moving with point density. Registered as olv.volume.stockpile-area-grid, generation 2.
The header prefix is read first, a worker frames the file from it, and chunks decode from a pool, so a compressed file is never held whole. A strided stand-in preview draws while the decode continues.
A computed terrain core is written to origin-private storage on your own disk and restored when you ask for the same analysis again. Benchmarked at 6.6 s, 6.2 s and 9.4 s fresh against restore medians of 24 ms, 62 ms and 96 ms, with byte-identical grids.
A worker failure no longer drags a large job onto the main thread and freezes the page. The fallback runs only at sizes measured as safe: 25,000 points and 1,000 cells for terrain, 1,000,000 points for classification. Anything larger refuses and says nothing was produced.
Data, Work, Analyse and Output sit in a left rail; the Inspector on the right re-styles the scan without leaving the panel. Screenshots taken from the v0.6.8 build.
Drop a file or paste a COPC, EPT or tileset URL. The format is detected for you.
CRS, vertical datum and units read from the header. Large coordinates recentred in Float64.
Colour by height, intensity, class, RGB or normals. Probe any point. Read the Scan Report.
Ground filter, DTM with hold-out RMSE, surface products, one Terrain Assessment verdict.
Process Studio shows each product as ready, review or blocked, with the shortest action that lifts it.
Stamped, watermarked or refused. The permit decision is written into the artifact’s provenance, and the deliverable ZIP carries a SHA256SUMS manifest.
Static loads decode in a worker with a memory-safety budget. Streaming paths fetch view-dependent, decode in workers and keep residency bounded, so a file far larger than memory still renders. A local LAZ opens progressively: the header and chunk table are read first and chunks decode from a pool behind a strided stand-in preview, so the compressed file is never held whole.
Mesh content in 3D Tiles (B3DM, I3DM, CMPT, glTF) and Draco are refused by name. Full matrix with scanner and app compatibility in the guide.
Status as of 18 September 2026, from the v0.6.9 release gate. Each tile links to the live source. The mutation score is the figure the release record cites, measured at an earlier commit rather than at the release commit, and a release whose cited score falls under 75 is refused.
From v0.6.7 the project is AGPL-3.0-only. Run a modified version for others over a network and you must offer them the source. Releases through v0.6.6 stay under MIT. A separate commercial licence exists for teams that need different terms.
Every release from v0.6.1 to v0.6.8 is deposited with a version DOI. The concept DOI resolves to v0.6.9, the newest deposit.
10.5281/zenodo.21544619
Release archives from v0.6.3 on carry a Sigstore-signed SLSA provenance statement, a SHA256SUMS manifest and a CycloneDX SBOM. Verify before you trust.
gh attestation verify <archive> \ --repo Aurtechmx/openlidarviewer
Open the viewer, drag a .las, .laz, .e57 or .copc.laz onto the page, or paste a remote COPC URL. Ten seconds, no sign-up.