Usually, Figma automatically orders frames from top left to bottom right when exporting to PDF, as they appear on the canvas.

So, you can arrange the Frames in the order you want to export.

When you Export frames to PDF, it will export all frames on the current page as a single PDF file, even if it is not marked for Export!

Hi @Mojgan_Ziaei you can try the plugin Super PDF and select one of the three available options to export the order of your pages. Time created does the export the same way Figma does, while Name and Number will export the pages based on their name (alphanumerical) or the number you named them, eg 1,2,3,4,5. You can select the frames right from the canvas without creating a new page for the frames and pages.

I hope this helps!