A handout, not a clone of the slides
PowerPoint files are designs, not just titles. The tools here pull the words off slides and put them in a PDF, a Word file, or a picture. They do not clone animations, masters, or embedded video.
That is enough when you need a transcript of the deck or a quick handout. It is not enough when the slides themselves are the deliverable. Export from PowerPoint or LibreOffice for that. Legacy .ppt and Apple Keynote files cannot be created in the browser.
If you already know the job, start with PPT to PDF or PowerPoint to Word.
Every format on the site is listed from the homepage.
Export from PowerPoint when the design matters
Open the tool that names your two formats and read what the download will contain before you delete the original. If a result does not match that description, tell us.
A handout is not the deck
PowerPoint files are designs. These tools pull the words off slides into a PDF, a Word file, an image, or a plain ODP. Themes, animations, and embedded video are not copied. That is enough for a transcript or a quick handout. It is not enough when you are about to present. Export from PowerPoint, Google Slides, or LibreOffice for a file that must look identical.
A real PowerPoint 97 .ppt file cannot be converted in the browser. PPT to PPTX stops on that binary file and tells you to Save As PPTX. If the upload is already PPTX, the tool only re-saves it. Keynote files are created on a Mac, not here. PPT to video is not available. Use PDF or record the slideshow yourself. There are two URLs for a text-style PowerPoint to PDF job. Both stay, and both have the same kind of limit.
Ask what the recipient will do. If they will present, they need the deck from PowerPoint or LibreOffice, not a text extract. If they will read on a phone, a PDF of the words may be enough, and they should know the pictures were not copied. Do not promise a Keynote file from a Windows browser. Make the Keynote on a Mac, or send PDF. A text extract is still useful as speaker notes when you paste it under the real slides. It is not useful as the only file on the presentation laptop. Copy the original deck to that laptop, and use this site for the handout.
The deck and the handout are different files
Copy the PPTX to the presentation laptop. Use this site when you need the words in a PDF, a document, or a plain set of slides for LibreOffice. Tell the recipient that animations and pictures were not copied, so they do not arrive expecting the show. A legacy PPT file has to be saved as PPTX in PowerPoint before a browser can read the slides.
Keynote stays on a Mac. A browser cannot write one, and renaming a PPTX does not create one. If the only goal is a file people can read on a phone, PDF is enough, and the original deck remains the file you will edit next week.
If you are handing slides to a translator, the text extract is the right file and the deck is the wrong one. The translator needs the words, not the animation. Send both only if you label them. The extract will not update when you change the deck later. Export again after the final text lock. An old extract with new slides is how a talk and a handout disagree in front of an audience.