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How the MPP Viewer Works

Microsoft Project viewer: explore supported file formats, viewing limits and open-source credits. Your files are never uploaded.

Viewing architecture

A cancellable WASM Worker reads MPP14 schedules into paginated task and resource tables with a Gantt overview.
  1. 1The mppgo reader runs only inside a Worker; the file stays on your device.
  2. 2Summary rows use saved early dates; missing dates stay empty and inactive tasks keep their state.

Main limitations

  • — Project 2010+ MPP14 only; no password-protected files.
  • — No editing, recalculation, calendars, cost tables, custom fields or dependency arrows.

MANIFEST

Formats declared by the plugin

Microsoft Project
.mpp

Open-source projects and licenses

mppgo 0483da362cb316188eee9124d47d216c80078bb2

MIT

Local MPP14 schedule decoding; Go runtime under BSD-3-Clause.

Read distributed license text

Published format pages