ODP to PPT is a transcript, not the slides
Someone sent an OpenDocument presentation and you need PowerPoint.
Slide text is extracted from the ODP and written as a PPTX file. The download uses the modern PowerPoint type, not the old .ppt format. Design and animations are not cloned.
Animations and masters
Open it in PowerPoint and fix the layout before a talk. For a file that must look identical, ask the author to export PDF.
ODP to PPT without the extra promises
ODP to PPT sits on this site because ODP and PPTX are not interchangeable, even when they look similar in a file list. Someone sent an OpenDocument presentation and you need PowerPoint. Use ODP when the next person works in LibreOffice and asked for that format. Decks are shared as PPTX when the other person will present, and as PDF when they only need to read.
Slide text is extracted from the ODP and written as a PPTX file. The download uses the modern PowerPoint type, not the old .ppt format. Design and animations are not cloned.
Read this about ODP before you upload
ODP is an OpenDocument presentation. LibreOffice Impress opens it. PowerPoint support varies. The visual design is not copied. A legacy PPT file is not accepted as the upload.
Keep the original deck.
Read this about PPTX before you send the download
The download has to be PPTX, because that is the format the next step named. Decks are shared as PPTX when the other person will present, and as PDF when they only need to read. Slide text can be pulled out for a handout or a transcript.
If the slides themselves are the deliverable, export from PowerPoint or LibreOffice.
Keep, check, then delete
People lose time when they convert before they know which rule failed. Size, pixel dimensions, codec, font encoding, and layout are different rules. ODP to PPT only addresses the ODP to PPTX step. Someone sent an OpenDocument presentation and you need PowerPoint. Slide text is extracted from the ODP and written as a PPTX file. The download uses the modern PowerPoint type, not the old .ppt format. Design and animations are not cloned. Open it in PowerPoint and fix the layout before a talk. For a file that must look identical, ask the author to export PDF. The file stays in your browser and is not uploaded. The limit is 100 MB. Keep the original until the download has been opened in the program that will use it. Do the test with a short or simple file first when the real file is large. A one-page PDF, a single photo, or a one-minute clip will show you whether the output is the kind of file you needed. After that test looks right, run the real file once. Keep both the ODP original and the PPTX download until the receiving person or the upload form accepts it. Slides are a design. ODP to PPT can take the words off them or move a file a browser understands. It does not copy animations, masters, or embedded video. When the deck itself is what you will present, export from PowerPoint or LibreOffice. Use this page for a handout or a format a browser can actually write.
Here is the decision for ODP to PPT. You start with ODP and you stop when a real program accepts PPTX. Slide text can be carried into a plain presentation. Themes, animations, masters, and embedded video are not cloned by a browser tool. If those two sentences describe a tradeoff you do not want, do not convert. Renaming the extension by hand will not do this job. Running the tool twice on its own output will not do it either.
Open it in PowerPoint and fix the layout before a talk. For a file that must look identical, ask the author to export PDF.
A related step, if you still need one, is PPT to ODP.
Other jobs start from the homepage, where each tool is named for the conversion it actually does.