Multi-File Merge
Combine any number of PPTX files into a single, cohesive presentation.
Merge PowerPoint Online
Combine multiple PPTX files into one seamless presentation for team delivery.
How to merge PowerPoint files
Upload multiple PPTX files
Add the decks you want to combine and set their order. Free accounts support uploads up to 30 MB total.
Merge into one deck
Sign in to start merging. Layouts and styles from each source file are kept.
Download the merged PPTX
Download the combined presentation when the task completes.
Why use DeckFlow for this?
Preserve Formatting
Each source file's layouts, fonts, and styles are maintained after merging.
Custom Slide Order
Drag-and-drop files to set the exact slide order before merging.
100% Privacy Protection
All uploaded files are automatically and permanently deleted from our servers after 24 hours.
Frequently asked questions
How many files can I merge at once?
You can merge multiple PPTX files in a single operation. Free accounts support uploads up to 30 MB total; higher plans raise that limit. The processing ceiling is 300 MB.
Will slide numbering reset after merging?
Slides are numbered sequentially starting from the first file. You can renumber in PowerPoint after merging.
Is it free to use?
Yes. Sign up for a free account to get credits and start conversion. Guests can upload a file, but processing begins after sign-up. Free accounts support uploads up to 30 MB.