Embroidery
DST file
A DST file is the Tajima-format embroidery machine file nearly every commercial embroidery shop can read, so buyers who already own one usually skip the digitizing fee.
A DST file is the Tajima-format machine file that essentially every commercial embroidery machine can read, whether it came out of Wilcom, Hatch, Embird, or a machine's own software. It stores the raw stitch data — every needle penetration, jump, trim, and color change — as coordinates, but notably not color names; DST carries stitch geometry, not a palette, which is why it sews on any machine but doesn't preview accurately without a separate color chart or a reference file.
For a buyer, owning a DST file of your own logo is real leverage. Most shops charge a one-time digitizing fee — commonly in the $25 to $75 range depending on complexity — to convert artwork into stitches the first time a design runs. Bring a shop your own already-digitized DST file and that fee usually disappears, since the labor-intensive part is already done.
The catch is that a DST file digitized for one fabric or one logo size doesn't necessarily transfer cleanly to another — density and push-and-pull compensation are often tuned to a specific garment. A shop may still ask to run a sew-out on your file before committing to a large order, even with a DST in hand.
A common mistake is assuming any embroidery file works interchangeably — a vector logo (AI, EPS, PDF) is not a DST file, and even one built for a jacket back may sew badly shrunk down for a cap front. Buyers get the most value from a DST file when they also know what garment and size it was originally digitized for.