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MPP viewer online

Open an MPP file online, in your browser: the Gantt chart, the task table and the critical path, without Microsoft Project.

Want to edit and save it? Onplana Schedule is free for Windows and Mac

A Microsoft Project XML file opens in your browser, and is uploaded only if you run a health check or publish a copy. Any other file is converted on Onplana's servers. The viewer asks before each upload, and the uploaded copy is deleted within 3 days, and removed from backups 7 days after that.

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How to open an MPP file without Microsoft Project

  1. Choose Open a file above, or drop the file onto the viewer.
  2. A Project XML file opens straight away. For an .mpp or another format, the viewer asks before it sends a copy to be converted.
  3. Read the plan: switch between the Gantt chart and the task table, show the critical path, and run a free health check.

Every way to do it, with or without Microsoft Project, is in how to open an MPP file. New to the format? What is an MPP file explains where it comes from and which apps open it. On a Mac, Microsoft Project for Mac covers the options; leaving ProjectLibre, the ProjectLibre alternative opens .pod files. Holding a Primavera P6 schedule? The free XER viewer opens an .xer in the same screen. On a phone? Open an .mpp on your iPhone or Android.

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Frequently asked questions

How do I open an MPP file online?

Choose Open a file at the top of this page, or drop the .mpp onto the viewer. The viewer asks before it sends a copy to be converted, then shows the Gantt chart, the task table and the critical path. It works in any modern browser on Windows, Mac or Linux, with no Microsoft Project and no account.

Do I need Microsoft Project to open an .mpp file here?

No. The viewer reads the file itself and draws the Gantt chart and the task table in your browser. Nothing to install and no account.

Is my file uploaded?

Not until you say so. A Microsoft Project XML file is read in your browser, and it is uploaded only if you run a health check on it or publish a copy to Onplana. Any other file is converted on Onplana's servers to open it. The viewer asks before each upload, until you tick Don't show this again, and the uploaded copy is deleted within 3 days, and removed from backups 7 days after that.

How large a file can it open?

Up to 20 MB for a file that is converted on the server. A Project XML file read in your browser has no such limit beyond what your browser can hold.

Can I edit the plan and save it?

Not in the browser. To edit tasks, dates and links and save the plan as a Project XML file Microsoft Project opens, use Onplana Schedule, the free desktop app for Windows and Mac, which runs the same viewer.

What else can I see?
The critical path, the baseline, the task details, and a free schedule health check that scores the plan and lists what to fix. You can also export the chart as a PDF or picture and the task table as a CSV, which Excel opens; the viewer does not write .xlsx, but the MPP to Excel page makes one. To convert an MPP file to Excel or PDF another way, the guide compares the routes.
Can I see each resource's work by month?

Yes. The Resource usage view lists every resource with its work and actual work by month, week or day, and the assignments behind that work beneath it, with a total for each line and each period. Work the file carries no day-by-day figures for is spread evenly across its working days and marked as an estimate. In the browser the view is read-only; Onplana Schedule, the free desktop app, also lets you type actual work for a period and export the view as a CSV file. Full screen gives the view the whole display, and Edit in Onplana Schedule takes you to the desktop app.