Project File Viewer

How it works

1. 1Drop in a schedule file. CSV, Excel, Microsoft Project XML and Primavera XER are all read directly.
2. 2Column names are matched automatically — task name, dates, duration, percent complete, predecessors, resources, WBS and baseline fields are all picked up where present.
3. 3Browse the task list, sort any column, filter by task or owner, and switch to the timeline to see the plan drawn as a Gantt chart.
4. 4Export what you are looking at as a clean CSV, or save the timeline as a PNG for a slide.

Common questions

Can it open a .mpp file?

No. The .mpp format is a closed binary format that needs Microsoft Project or a licensed library to read. In Project, use File, Save As and choose XML Format — that export carries the full task list, dates, predecessors, baselines and resource assignments, and this tool reads all of it.

Which Primavera exports work?

The XER export, which is what P6 produces by default when you export a project. Activity IDs, WBS phases, relationships with lags, float and constraint dates are all read.

Do I need Microsoft Project or Primavera installed?

No — that is the point of the tool. Anyone you send a schedule to can open it here without a licence.

My dates look wrong — the days and months are swapped.

A date like 03/04/2026 is genuinely ambiguous. The parser inspects the whole column and picks the order that works for every value, and it tells you which order it used under the file name. If the file has no unambiguous date, it assumes day-first.

Is my schedule stored anywhere?

No. The file is parsed to produce what you see and is never written to disk or to a database. Reload the page and it is gone.

There is a size limit?

Four megabytes, which covers the overwhelming majority of schedule files. A plan large enough to exceed it is usually better handled in PlanView, where it can be kept and compared over time.