--- title: Resizing PDF Files for Dashboard Use | PostGrid description: How to resize a PDF to the correct page dimensions before uploading it as a letter or other mail piece in PostGrid. --- How to resize your PDF file for manual submission to the PostGrid dashboard. If you’re sending **letters** via the PostGrid dashboard and your PDF file does not fit our guidelines, you can follow these steps to resize your PDF. 1. Visit ![PDF2Go resize tool](/_astro/01-Screenshot_2023-07-24_19-30-38.DhKKiqkv_2lVKIo.webp) 2. Upload your PDF file, select “Set custom page size” and enter the size you desire (in this case, 8.5 inches by 11 inches for US letters) ![Size entry on PDF2Go](/_astro/02-Screenshot_2023-07-24_19-31-57.DVygBghA_Z2uCO7v.webp) 3. Click “Start” and wait for the result ![Result page on PDF2Go](/_astro/03-Screenshot_2023-07-24_19-33-16.BDcB36nk_2cwf9b.webp) 4. Click download to download the resized file. Confirm that it looks correct; you should now be able to submit this file to PostGrid ![File being submitted to the PostGrid dashboard](/_astro/04-Screenshot_2023-07-24_19-38-04.BpImjbRG_Z2izvKa.webp)