A web-based tool for inspecting, editing, and sharing ETC Expression fixture personality files — right in your browser, with no installation required.
Load any .prs file directly from your machine. Card or table layout, accurate parsing from the binary structure.
Modify attributes, flags, and home values. Supports Independent, LTP, 16-bit, and Flipped channel modes.
16-bit pairs move as a single unit. Drag handles prevent accidental reorders while editing inputs.
Export binary-compatible .prs files from the viewer or editor. Output matches ETC Personality Editor structure.
Save named checkpoints while editing and restore them at any time. Stored locally in your browser.
Browse and share personalities with the community. Search by fixture name, manufacturer, or tags.
16-bit channel pairs are detected strictly from the binary flag in the PRS file —
no heuristics, no guessing based on channel numbering. The leader channel carries
the 0x04 flag bit,
and the following channel is treated as its pair.
Home and display format values follow ETC's own storage convention — stored in the second (follower) channel — so exported files are binary-compatible with ETC's Personality Editor.