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Compatibility
This page lists the versions and environments verified for 1.0.0. Test results from 2026-08-05 are available in Release evidence.
Summary
| Topic | Supported behavior |
|---|---|
| React | ^19.0.0 |
| Bundle | ESM and browser client-side rendering |
| Datasets | v2.1 and v3.0 are fully supported |
| Other versions | Only newer v2 and v3 minor versions open read-only |
| Telemetry | The npm package does not send usage data |
| Breaking changes | Semantic versioning within major version 1 — deprecation |
Vite applications and client-only Next.js integrations are covered in CI.
Datasets
codebase_version | Available features | Export |
|---|---|---|
v2.1 | View and edit | Verified with the official LeRobot v0.6.1 reader |
v3.0 | View and edit | Same |
Newer v2 or v3 minor version | View only | Not available |
v2.0, other major versions, or missing version | Not opened | Not available |
Fully supported versions use exact matching. Only newer minor releases in the v2 and v3 families receive read-only compatibility. The app does not treat other versions, including future major versions, as compatible.
Export is available in the standalone application, not in the npm API. Its output is checked with LeRobot v0.6.1. Video layout notes: Data formats.
v3.0 subtask viewing and export are checked against official Hub datasets lerobot/libero_10_subtask and lerobot/pusht-subtask. Download commands: Data formats — Official Hub examples.
Inputs
| Input | Expectation |
|---|---|
| Local archive | .zip / .tar / .tar.gz / .tgz |
| Local folder | Drag or select a folder. File System Access needs HTTPS or localhost; on HTTP LAN origins Studio uses the file picker and cannot restore handles after reload |
| Remote archive | CORS + Range for big files — CORS |
| Samples | Optional; only if you set sample env vars at build time |
Authentication, signed URLs, and proxies are configured by the embedding application or deployment.
Browsers
See Browser support. Chromium receives full browser coverage; Firefox and WebKit receive smoke coverage. Video playback also depends on codec support.
The fixed validation reader is LeRobot v0.6.1. A nightly job also checks the upstream main branch; it does not block releases.