Convert · .pptx → .pdf
Convert PPTX to PDF in Your Browser
Turn a PowerPoint .pptx deck into a .pdf — without uploading it anywhere. The whole conversion happens locally in your browser.
How it works
- Click Open your PPTX to launch the editor in your browser.
- Pick the .pptx file from your device, or drag and drop it onto the page.
- Choose Download as / Save as and pick PDF.
- One page per slide is generated on your device and downloaded — nothing is uploaded.
A deck as PDF is how you send slides to someone who should read them but not edit them, and how you make sure they look the same on a machine that does not have your fonts or your version of PowerPoint. Doing that conversion through an upload service means the unreleased pitch, the internal roadmap or the client proposal sits on a third-party server first. Here it does not leave the tab.
OnlyOffice's rendering engine, compiled to WebAssembly, draws each slide and writes it out as one PDF page. Layouts, embedded images, shapes, charts and speaker-visible text come across as rendered — this is the same pipeline that paints the slides on screen, so the PDF matches what you were just looking at.
Two things are worth setting expectations on, because a PDF is a still document: animations and slide transitions have nothing to become and are simply flattened to the slide's final state, and speaker notes are not part of the slide area, so they are not what a plain slide export captures. If a deck matters, page through it in the editor before exporting.
Frequently asked questions
How do I convert a PPTX to PDF here?
Open the PPTX in the editor, then use Download as / Save as and choose PDF. The conversion runs in your browser.
Is my presentation uploaded to convert it?
No. It is opened and converted entirely inside your browser tab, so it never leaves your device.
Do I need PowerPoint or an account?
Neither. No PowerPoint, no 365 subscription, no sign-up.
What happens to animations and transitions?
A PDF is a still document, so animated builds and slide transitions are flattened — each slide is written out in its final state.
Is it one PDF page per slide?
Yes. Each slide becomes one page, in slide order.
Are fonts and layout preserved?
Yes. The same engine that renders the slides produces the PDF, so layout, images, shapes and charts carry over.
Does it work with old .ppt files?
Yes. Both .pptx and the older .ppt open with the same engine and can be exported to PDF.
Does the conversion work offline?
Yes. Once loaded it is an installable PWA, so it keeps converting with no internet connection.