Tajima DST — Industrial Embroidery Standard from Tajima Industries
Tajima DST is a binary embroidery format developed by Tajima Industries (Nagoya, Japan) in the early 1980s as a companion format for Tajima's multi-head industrial embroidery machines. Over four decades, DST evolved from a single manufacturer's proprietary specification into the de-facto industry standard: it is read and written by Brother, Barudan, ZSK, Happy, and SWF machines, and every professional embroidery software (Wilcom, Hatch, Embird, Inkstitch) supports DST as a primary export. Today DST is equally relevant on industrial production lines stitching Nike logos onto thousands of polos and in hobby workshops of Etsy sellers where a 500-dollar Brother PE800 embroiders personalized pillows. On osm2cdr.ru the format is supported through the Inkstitch pipeline: an OSM city map is simplified by the Douglas–Peucker algorithm and converted into a stitch path ready for embroidery on a hoodie, pillowcase, or baby blanket.
History: Tajima Industries 1944 → DST 1980s → Wilcom → Inkstitch
DST's history begins long before the format itself — with Tajima Industries Ltd., founded by Toraichi Tajima in Nagoya in 1944 as a machine-building enterprise of post-war Japan. Initially Tajima produced general-purpose sewing and textile equipment, but in the 1970s the firm made a strategic bet on multi-head embroidery machines — computerized machines capable of simultaneously embroidering identical designs on multiple items via dozens of needles driven by a single program. This was a revolutionary product: instead of an embroiderer's manual labor, one operator running a Tajima TMEF-H612 (12 heads) produced per shift the equivalent output of fifty workers.
By the early 1980s, the worldwide installed base of Tajima machines required a standard digital design format. Tajima developed DST (Data Stitch Tajima) as a simple binary command stream — no header signature, no metadata, only a sequence of "move needle to X/Y and stitch" instructions. The specification was never officially published: the format was proprietary, and for years embroidery software vendors had to reverse-engineer the structure from hex dumps of real files.
Despite its closed nature, DST quickly became the industry standard for three reasons. First, Tajima's market dominance: by the 1990s the company controlled a large share of the commercial embroidery segment, and any digitizing software had to export DST to be sellable. Second, the format's simplicity: a binary stream without complex structures is easy to implement in any programming language. Third, the network effect — competitors (Brother, Barudan, ZSK, Happy, SWF) added native DST read support to their machines so customers could use existing design libraries.
In parallel with Tajima, the software industry developed. In 1979 in Sydney, Bill Browning founded Wilcom — an Australian company that became the global leader in embroidery CAD. Wilcom Embroidery Studio (1500–5000 dollars depending on edition) became the industry's equivalent of AutoCAD: professional digitizers manually draw designs, placing stitch blocks, fill patterns, and satin stitches, then export the result to DST for production. By the 2010s Wilcom released the consumer brand Hatch Embroidery (~700 dollars) for home embroiderers, expanding the format's audience.
The real democratization of DST happened around 2017 with the appearance of Inkstitch — an open-source plugin for Inkscape developed by a community led by Lex Neva. Inkstitch allowed any Inkscape user to convert SVG vectors into DST through a runtime plugin, without needing to purchase Wilcom for thousands of dollars. This coincided with the explosive growth of Etsy (60+ million active buyers, embroidered products being one of the top handmade categories) and the appearance of affordable hobby machines: Brother PE800 (~500 dollars), Bernina B 590 (~3000), Brother Stellaire XJ1 (~8000). In parallel, Joe Schaeffer published libembroidery on GitHub — a C library with reverse-engineered specifications for DST, PES, EXP, and other embroidery formats, becoming the technical foundation for dozens of open-source converters.
Inside DST: variable-length records, signed-byte X/Y, command nibbles
DST is a binary format with no header signature: a file begins either directly with stitch data or with an optional 512-byte ASCII header (label, stitch count, color count, design bounds) that many parsers skip by offset. The main body of the file is a sequence of 3-byte records, each describing one atomic stitch.
Record format. Each stitch occupies exactly three bytes. The first two bytes encode the relative needle displacement along X and Y from the previous position (signed displacement in native units, where 1 mm = 10 units). The third byte is a command nibble whose bits define the operation type: normal stitch (needle passes through fabric), jump stitch (mechanism moves the needle without stitching, for transitions between disconnected design areas), color change (machine stops and waits for operator thread swap), sequin commands (for machines with sequin attachments), end of pattern (file terminator). The X/Y encoding is non-linear — coordinates are distributed across bits of the three bytes via a specific lookup table, complicating parser implementation but ensuring compactness: a dense embroidery design of 50,000 stitches occupies only ~150 KB.
Limits and constraints. The native unit equals 0.1 mm, giving theoretical resolution of 10 points per millimeter — sufficient for effective satin embroidery. Maximum displacement per single record is limited to ±12.1 mm per axis (signed byte × 0.1 mm), and larger movements require serial jumps. Typical maximum design size on commercial machines is around 400×400 mm; on consumer hobby machines it is 100×100 mm or 200×300 mm depending on model. Machine memory is limited: older Brother PE-series machines hold designs up to 200 KB in onboard storage; newer models read from USB flash drives.
What DST does not store. This is a critical limitation of the format. DST contains no thread color information — only the color change command, which stops the machine between same-color blocks. The operator must have an accompanying thread chart (a separate document or printed card) specifying which Madeira/Isacord/Robison-Anton spool to mount at each stage. DST also does not store design metadata (name, author, license), embedded preview, or fabric/stabilizer recommendations — all this is stored separately or transmitted via companion files (for example, EMB from Wilcom or INF/PES for preview).
Use cases: from Nike logos to Etsy pillows
DST is used in three major market segments, each with its own economic characteristics.
Commercial apparel decoration. This is the historic and still largest segment. Contract embroiderers serve sportswear brands (Nike, Adidas, Puma — logos on jerseys, hats, backpacks), school and university sports teams (jerseys, varsity jackets), corporate uniforms (police patches, restaurant chain uniforms). Volumes reach tens of thousands of units per design, machines run 24/7, and the DST file is digitized once and used for months.
Promotional products. Caps, polos, backpacks, bathrobes, corporate gifts with embroidered logos. The Promotional Products Association International (PPAI) segment is roughly a 25-billion-dollar industry in the US, and embroidered apparel is one of the main categories. Typical run sizes are 50 to 1000 units, and the DST file is often reused for repeat orders.
Hobby crafts and Etsy. The fastest-growing segment since 2017. Tens of thousands of Etsy sellers with home Brother/Janome/Bernina machines produce personalized pillows, baby blankets, kitchen towels, lingerie, and holiday decorations. Here DST is purchased on Etsy and Creative Fabrica (typical design price 3–8 dollars) or generated personally via Inkstitch from client SVG logos. The segment also includes the quilting community — DST is used for appliqué and thread-art in quilts.
Education and restoration. Textile programs at universities (FIT in New York, Central Saint Martins in London) teach students digitizing on Wilcom with DST export. Museum textile conservators use DST for reconstruction of historical embroidery patterns — a scanned antique sample is digitized, converted to DST, and reproduced on a modern machine for replica copies.
Software and tools
The embroidery software ecosystem around DST is split across three price tiers.
Professional segment. Wilcom Embroidery Studio (1500–5000 dollars depending on edition — Decorating, Designing, Element) is the industry standard for commercial digitizers, supporting all advanced features (auto-digitizing from vectors, satin/fill optimization, lettering with dozens of built-in fonts). Pulse DG/ML by Tajima is Tajima's proprietary software, tightly integrated with their machines. Compucon EOS is a European competitor with a strong lettering module.
Mid-tier consumer. Hatch Embroidery (~700 dollars) is Wilcom's consumer version for home businesses. Embrilliance Essentials (Mac/Windows, 80–180 dollars) is a popular entry-level digitizer. Embird (Czech Republic, ~100 dollars plus modules) takes a modular approach where users buy only the functions they need. Brother PE-Design ships with Brother machines or sells separately for 200–600 dollars.
Open-source and free. Inkstitch (free, Inkscape plugin) is the most popular choice in the hobby community and the only full-featured open-source digitizer. It supports export to DST, PES, EXP, JEF, and a dozen other formats. libembroidery (Joe Schaeffer, GitHub) is a C library with reverse-engineered specifications, used as backend in many converters. my-embroidery and dst2obj are command-line utilities for converting between formats and visualizing DST in 3D models.
OSM2CDR integration: a city as embroidery pattern
In osm2cdr.ru, DST support is implemented through a pipeline: PostGIS extracts the street network and landmarks of the selected bbox, geometry is simplified by the Douglas–Peucker algorithm to a level acceptable for embroidery, converted to SVG, and then Inkstitch (invoked from a worker) transforms the SVG into a DST stitch path. The result is an embroiderable city map, which the "Map gift" product category sells as a file for self-print or as a finished item.
A typical use case is gift items: an embroidered hometown map on a hoodie for an anniversary, central Paris on a pillowcase as a wedding gift, a district outline on a baby blanket with the maternity hospital's coordinates. Hobby embroiderers download DST from osm2cdr.ru and run it on a home Brother PE800 (~500 dollars), spending 20–60 minutes of machine time per design.
The format's limitations impose serious constraints on conversion. A city center's street network is tens of thousands of segments, each becoming a series of stitches at native 0.1 mm resolution. Without aggressive simplification a DST file becomes impractical: 150,000+ stitches exceed consumer machine memory and embroidery time reaches several hours. Therefore the pipeline applies Douglas–Peucker with tolerance calculated for the target physical embroidery size (100×100 mm for home hoops, up to 360×200 mm on a single-hoop commercial frame). The second limitation is the absence of colors: the user receives a PDF thread chart alongside the DST file, specifying which Madeira threads to mount for roads, water, and parks. The third is that the format is unsuitable for photo-realistic maps (no raster fills with gradients), only for line/area patterns with a discrete palette of 3–6 thread colors.
Comparison and related formats
Brother PES is DST's main competitor in the consumer segment, with embedded thread colors and preview. SVG is the vector source for the Inkstitch pipeline. PDF is the format for the thread chart accompanying a DST file. G-code is a conceptually similar low-level machine command format for CNC/laser, evolving in the same "move tool by X/Y and activate" paradigm.
Conclusion (EN)
Over more than forty years, Tajima DST has traveled the path from a single Japanese manufacturer's proprietary format to a universal embroidery standard uniting commercial production lines and hobby workshops. Its minimalism — no header, minimal metadata, simple binary structure — was both its strength (instant adoption by competitors) and its weakness (no thread colors, no preview, no license metadata). Today DST is the foundation of an entire industry: from 5000-dollar Wilcom Embroidery Studio to free Inkstitch, from a Tajima TMEF-H612 on a garment factory floor to a Brother PE800 in the home corner of an Etsy seller. For osm2cdr.ru, DST is a bridge between OSM geodata and the material world of embroidered items, turning a map of a favorite city into a gift you can touch.