Why send slides as PDF
A presentation file is only as reliable as the computer that opens it. The same .pptx can look different on a colleague's laptop with another Office version, on a Mac with Keynote, in Google Slides, or on a conference PC that lacks your fonts. Text reflows, bullet points spill off the slide, and charts shift. A PDF freezes the layout: every viewer, printer and phone shows the slide exactly as it was rendered.
PDF is the better choice whenever people need to read rather than edit the deck:
- Handouts and follow-up material after a meeting or webinar.
- Pitch decks sent to investors, who often read on a phone between calls.
- Uploading to job portals, tender platforms or learning systems that accept only PDF.
- Archiving a final version that should not change later.
- Printing, where a PDF prints the same from any machine.
Keep the original file, though: the PDF is a snapshot, not something you can comfortably edit.
What happens to your file
This converter runs on our server rather than in your browser. The file is processed by LibreOffice Impress in headless mode, using its standard PDF export filter. Each conversion gets its own temporary LibreOffice profile, so jobs from different people never share settings or cached data.
Three input formats are accepted:
- PPTX — the XML-based format PowerPoint has used since 2007. This is what most files are today and converts most faithfully.
- PPT — the older binary format from PowerPoint 97–2003. It still converts well, but very old decks sometimes rely on effects that modern software interprets slightly differently.
- ODP — the OpenDocument presentation format used by LibreOffice and some government institutions. Since LibreOffice is its native application, ODP files convert most predictably of all.
The output contains one page per slide, at the slide's own aspect ratio, so a 16:9 deck produces wide pages and a 4:3 deck produces the older squarer shape. Text stays real text in the PDF, which means it can be searched and copied, and fonts used in the document are embedded so the file looks the same everywhere.
A free conversion handles files up to 500 MB and is limited to one per day. Premium removes the daily limit, raises the cap to 4 GB and gives each job a longer processing window, which matters for decks stuffed with high-resolution images.
Preparing a deck for a clean conversion
Most problems are visible in the source file before you convert. A few minutes of preparation saves a second attempt.
- Fonts. If you use a brand font that is not a standard system font, embed it when saving from PowerPoint (File, Options, Save, "Embed fonts in the file"). Otherwise a substitute font is used, and a slightly wider substitute can push the last line of a text box out of view.
- Embedded video and audio. A PDF cannot play the media from your slides. Only the poster frame of a video appears. If the video matters, add a short caption or link text to the slide.
- Animations and builds. A slide is exported in its final state, with all animated elements visible at once. If a build reveals items on top of each other, that slide will look cluttered. Duplicate it into several static slides before converting.
- Speaker notes. Only the slides are exported. If you want your notes to travel with the deck, put the key points on the slides themselves.
- Linked content. Charts and images linked to external files rather than embedded may appear empty. Paste them into the deck as embedded objects.
Checking and finishing the PDF
Open the result and scroll through it at full size before sending. Look in particular at slides with dense text boxes, SmartArt diagrams, and charts with many labels, since these are the places where a font substitution or a differently interpreted effect shows first.
Image-heavy decks can produce large PDFs, often 20–100 MB when every slide has a full-bleed photo. Email services commonly reject attachments above 20–25 MB, so if the file is too heavy, run it through Compress PDF, which typically shrinks such files substantially with no visible loss on screen. If you are assembling a pack, for example a deck plus a price list or a contract, combine the parts with Merge PDF.
Privacy and retention
Because the conversion runs on a server, your presentation is uploaded over an encrypted connection. The original file is deleted as soon as the PDF is produced, and the PDF itself expires and is removed within an hour. Still, for a confidential deck, download the result promptly rather than leaving the link open.