Choosing a resolution
Resolution is measured in dots per inch (dpi). 72 and 96 dpi suit quick previews and screens. 150 to 200 dpi gives clear text for slides and documents. Higher settings show finer detail but make much larger files.
The highest setting is 300 dpi, the usual resolution for printing.
One exported page can have up to about 16.8 megapixels. A larger page, such as a poster or an A3 page at 300 dpi, is exported at the highest resolution that fits, and ToolGPT tells you the resolution it used.