Export High-Res PNG Slides in LibreOffice Impress

Exporting high-resolution PNG images from LibreOffice Impress requires adjusting the export dialog settings to increase image dimensions and pixel density. By default, LibreOffice exports slides at standard screen resolution, but you can manually increase the width, height, and resolution (DPI) values to produce crisp, high-quality images suitable for print or high-definition displays.

Step-by-Step PNG Export Settings

  1. Select the Slide: Open your presentation in LibreOffice Impress and navigate to the slide you want to export.
  2. Open the Export Dialog: Go to File > Export… in the top menu.
  3. Set File Type: In the file dialog, choose PNG - Portable Network Graphics (.png) from the file format dropdown, enter a file name, and click Save.
  4. Configure the PNG Options Dialog: The “PNG Options” window will appear. Modify the following parameters for high-resolution output:
    • Resolution: Change the default value (typically 96 DPI) to 300 DPI for high-resolution print quality, or 150–200 DPI for sharp digital displays.
    • Width and Height: Ensure the aspect ratio link/chain icon is locked. For standard 16:9 widescreen slides, increase the width to at least 3840 pixels (4K resolution) or higher. Increasing the DPI will automatically scale these dimensions upward.
    • Color Depth: Set this to 24-bit TrueColor or ensure the default full-color setting is selected.
    • Compression: Set the compression level between 1 and 6. Because PNG uses lossless compression, changing the compression level does not degrade image quality; it only affects file size and export processing speed.
  5. Save the Image: Click OK to render and export the high-resolution PNG.

Batch Exporting Multiple Slides

If you need to export an entire presentation as individual high-resolution PNG images, LibreOffice Impress requires exporting the presentation to a PDF first via File > Export as PDF… (ensuring high image quality settings are checked), and then converting the PDF pages to high-resolution PNGs using an external tool or dedicated PDF-to-image converter. Alternatively, run LibreOffice from the command line using conversion utilities to process all slides simultaneously.