
What Is a DST File? The Commercial Embroidery Format Explained
A DST file is the Tajima stitch format used by commercial embroidery machines worldwide. Learn what it contains, which mβ¦
Vector and raster are the two fundamental image formats in graphic production. Every production supplier you work with: print shops, embroidery digitizers, screen printers, sign makers and vinyl cutters, will ask for your file in one of these formats. Understanding the difference prevents rejected artwork, extra redraw charges and production delays. This guide explains what each format is, when to use each and why production always prefers vector.
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A raster image is made of pixels. A vector file is made of paths. When you scale a raster image up, the pixels become visible and the image blurs. When you scale a vector file up, the paths recalculate and the image stays sharp.
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JPG, PNG and BMP files are raster format. They store colour as a grid of pixels at a fixed resolution. Scale beyond the original resolution and the pixels become visible. Common raster file types: JPG, PNG, BMP, TIFF, GIF.
AI, EPS and SVG files are vector format. They store colour as mathematical path objects. Scale to any size: billboard or business card, the output is always sharp. Common vector file types: AI, EPS, SVG, PDF vector, CDR.
Raster images are acceptable for: screen display, web use, and high-resolution print where no resizing is needed. At 300 DPI at the final print size, a raster image produces acceptable print quality.
Every raster to vector conversion from Sassy Digitizing is done manually in Adobe Illustrator. No auto-trace. Clean production-ready paths delivered in 2 to 8 hours from $10.
In a design workflow that only ever produces content for screens, the distinction between vector and raster is less critical. The distinction becomes critical the moment a file needs to be used for physical production. A vinyl cutter cannot cut a raster path. A laser engraver cannot follow a pixel edge cleanly. A screen printer needs colour-separated vector layers to burn individual screens. An embroidery digitizer produces a better file from a clean vector reference than from a raster source of the same logo.
The most common format mistake in embroidery and print shops is accepting a logo from a client as a JPG or low-resolution PNG and proceeding directly to production without converting it to vector first. The client often does not know their logo needs to be in a specific format. They simply send what they have. The shop's job is to either request the vector source file from the client or convert the raster file to vector before starting production.
Pixel based, fixed resolution
Path based, infinitely scalable
Here is the practical rule for any production workflow: if the job involves cutting, engraving, screen printing, or large format printing, start with a vector file. If the job involves only digital display, web use, or low-volume small-format digital print, raster at sufficient resolution works. When in doubt, vector is always the safer choice because a vector file can always generate a raster export, but a raster file cannot be automatically converted to a high-quality vector.
π‘ When a client sends a JPG logo, do not begin production. Either ask the client for the original source vector file or send the JPG to Sassy Digitizing for professional vector conversion. The conversion cost is always less than the cost of wasted production time and materials from using a poor-quality source file.
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| Format | Type | Scalable | Production Ready | Best For |
|---|---|---|---|---|
| JPG | Raster | No | No | Web display and photos |
| PNG | Raster | No | No | Web with transparency |
| TIFF | Raster | No | Partial | High-resolution digital archive |
| AI | Vector | Yes | Yes | Professional logo master file |
| EPS | Vector | Yes | Yes | Legacy production standard |
| SVG | Vector | Yes | Yes | Web and cutting machines |
| PDF (vector source) | Vector | Yes | Yes | Client production file |
| PDF (scanned source) | Raster inside PDF | No | No | Requires conversion to vector |
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Resolution matters for raster images like JPG and PNG. A minimum of 300 DPI is recommended for clean print output at intended size. Vector files are resolution-independent and stay sharp at any scale because they are built from paths, not pixels.
Raster to vector conversion is done by manually tracing the image in Adobe Illustrator. Each shape is rebuilt as clean vector paths. Auto-trace tools produce rough, jagged results. Manual conversion produces production-ready AI, EPS, or SVG files suitable for print and embroidery.
Yes. Manual tracing creates clean bezier curves with controlled anchor points, while auto-trace follows every pixel edge and produces messy, high-anchor-count paths. Manual tracing is suitable for production use; auto-trace often requires cleanup or full redraw.
Raster images store color per pixel, while vector files store color as attributes of shapes. Vector files allow clean color separation for printing, especially screen printing, while raster files merge all colors into a single pixel grid.
Vector files are usually much smaller than raster images. A vector logo may be under a few MB, while a high-resolution raster version of the same design can be tens of MB because raster files store pixel data instead of paths.
Screen printers require vector files because each color must be separated into individual layers for film output. Vector files allow clean separation of colors, while raster files cannot be directly separated without manual vector reconstruction.
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