18 / Print & Measure

Bulk Envelope Printer from CSV

Map a private CSV address list, calibrate printer offsets, preview every envelope, and export one exact-size PDF.

Addresses, CSV rows, previews, and PDF generation stay in this browser. Nothing is uploaded or saved by Siftlet.0 uploads · local

2 pasted recipients ready. Nothing is uploaded.

Exact-size preview

Envelope 1 of 2

#10 · 9.5 × 4.125 inPrint at 100% or Actual Size. Turn off “Fit to page.” Use the manual envelope tray when available.

Field note

Print one or hundreds of envelopes from a private CSV

Paste addresses separated by blank lines, or switch to CSV and map your spreadsheet columns. The preview, address list, PDF, and PNG stay in this browser.

CSV mail merge without Word

The importer recognizes common headers such as Full Name, Street Address, City, State, and ZIP Code. Check the mapping before export. A single PDF page is created for each recipient, up to 500 recipients per run.

Fix printer alignment

If every address prints too far left, right, up, or down, adjust the horizontal and vertical offsets in millimeters. Turn on the one-inch test grid, print one sheet, measure the error, then enter the correction before using real envelopes.

#10, A7, and international sizes

#10 is the common U.S. business envelope. A7 is widely used for 5 × 7 invitations. DL, C5, and C6 cover common international stationery. Pick the same custom paper size in the printer dialog and disable scaling.

Printing from iPhone or Android

Save / share creates an exact-page PDF and opens the system share sheet when supported. Save it to Files, Drive, or another app, then print through AirPrint, Android’s print service, or a printer app.