What if the decks have different sizes?

Slides of another size are scaled to fit the first deck's size, centred — nothing is cut off.

Can I edit the result before downloading?

Yes. The file opens in Mega PowerPoint Studio, a full presentation editor with an AI assistant — change anything, then download.

Is it safe to convert PowerPoint to PowerPoint here?

Yes. Your file travels over an encrypted connection and stays private to you — nobody else can open it. Projects you save are kept in your account until you delete them, and download links we email you expire after 7 days.

PowerPoint Tools

Merge PowerPoint

Combine presentations into one deck. It opens in Mega PowerPoint Studio, so you can check and change anything before you download.

Drop the presentations to merge

or browse from your device — two or more .pptx files

Private & secure· Check before you download· No watermark

Convert PowerPoint to PowerPoint online, the right way

Combining decks from several people by copying slides breaks their layouts. Drop your file, choose the options that matter, and it opens in Mega PowerPoint Studio with the export window ready. The presentations are joined in your order, each slide scaled to the first deck's size. Nothing is final until you say so: fix a value, rename a heading or restyle it, then download your PowerPoint file — or another format from the same window.

In your order

Every slide fitted to one size.

Checked in Mega PowerPoint Studio

See the result and change anything before you download.

Other formats too

The same export window offers every other format.

Frequently asked questions

You can open your file, convert it and check or change everything in the studio before you pay anything. Downloading the finished file is part of every MojoPDF plan — start with the 7-day trial for $1 and cancel any time.