Left chest logos, at the size that reads.

Drop your logo: it is sized for left chest, 90 mm on the longest side, the usual size for polos and work shirts, and the T-shirt view shows it in place. The quality checks tell you if any text is too small at that size.

Drop your logo here

PNG, JPEG, WebP, SVG or PDF/AI. Transparent background works best. You can also paste it: Ctrl+V

No logo handy? Try one:

Reading image
Finding thread colours
Planning stitches
Building simulation

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Speed Fabric Colour Show jumps

Size

Longest side mm

Most people mean the longest side: a 90 mm left-chest logo is at most 90 mm either way. Very small text (under ~6 mm tall) won't read well yet.

Design

Stats appear after you drop a logo.

Text

Detect text and sew it as lettering (beta)

Download

Your machine

Print or save as PDF: threads in sewing order, size, hoop.

Stitch-out animation

The simulation draws the real needle path. An actual sew-out also depends on fabric, stabilizer, tension and machine; test on a scrap before a production run.

One studio for everything you stitch

Measured, not claimed

Every engine change runs our benchmark of 28 test logos; these are the numbers from the last run (2026-10-12).

28/28logos pass every check
0.95median shape match (IoU) with the artwork
0.0%short stitches (under 0.3 mm) at most
28/28files re-read correctly in all 5 formats
2.2 smedian time per design

Checks: shape match at least 0.85, short stitches under 2%, counted in every written file the way a pre-flight checker reads it, every format re-readable, stitch count unchanged on re-read. 7 of the logos are lettering, run with the OCR text path.

Same logo, two ways to stitch it

Drag the handle. Left: our file. Right: a naive fill of the same artwork, the way a raw auto-trace stitches it.

Temsor Stitch5,752 stitches · 4 jumps · 4 trimsNaive fill3,296 stitches · 1,106 jumps · 0 trims

Naive fill: the artwork's colours as horizontal rows 0.4 mm apart, stitches up to 7 mm, no underlay, no pull compensation, no satin, a jump (never a trim) between pieces. Grey lines are untrimmed jump threads you'd clip by hand. Both drawn by the same renderer at 84 × 84 mm (scripts/make_compare.py).

Getting the size right

A left chest logo is usually 75 to 100 mm wide and sits about 18 to 23 cm below the shoulder seam, centred between the placket and the side seam. Wide wordmarks can go up to about 100 mm; tall crests look better nearer 75 mm wide.

At chest size, lettering under about 6 mm tall and lines thinner than a thread stop reading on fabric. The page flags both and can thicken thin strokes. Pick knit for polos and jersey, woven for shirts and jackets, and fleece for sweatshirts.

How it works

Drop your logo
PNG, JPEG, WebP, SVG or PDF/AI, or paste it. A clean logo with a few flat colours sews best.
Watch it stitch, fine-tune it
The simulation is the real file: every stitch in sewing order. Quality notes flag tiny text or hairlines, and you can click any part to change its thread, stitch, direction or density.
Download for your machine
Pick your machine and get the right format, hoop check and a printable production sheet.

Examples

Our sample logos and the stitches they become. Pick one to run it yourself.

Stitched: Multicolour badge — Multicolour badgeFile Doctor 92/100 · 7,666 stitches · 100 × 100 mm

Stitched: Lettering — LetteringFile Doctor 89/100 · 3,507 stitches · 110 × 26 mm

Stitched: Paw print — Paw printFile Doctor 100/100 · 3,041 stitches · 80 × 96 mm

Stitched: Star — StarFile Doctor 100/100 · 2,611 stitches · 100 × 95 mm

Works with your machine

Formats: PES
DST
JEF
EXP
VP3
Machines: Brother · Baby Lock (PES) · Janome (JEF) · Tajima and most commercial machines (DST) · Melco · Bernina (EXP) · Husqvarna Viking · Pfaff (VP3)
Privacy: Files are deleted within 30 minutes. Processed on our own server, never sent to an outside AI service, never used for training. Privacy notice

Our promise

Preview, simulation and production sheet are always free, and re-running a design at another size or fabric costs nothing.

Downloads are free while Stitch is in beta. When paid downloads launch, every purchase is covered: if a file sews badly, send us a photo of the sew-out and we fix it for free or refund you in full.

Questions

Which file formats do you make?

PES (Brother, Baby Lock), DST (Tajima and most commercial machines), JEF (Janome, Elna), VP3 (Husqvarna Viking, Pfaff) and EXP (Bernina, Melco). Pick your machine in the download step and we suggest the right one.

Is it really free?

Yes. The preview, stitch simulation and production sheet are free, and while we are in beta so are the downloads. No account and no card.

Which images work best?

Logos with a few flat colours and clean edges. A vector file (SVG, PDF or Illustrator .ai) is best: it is drawn sharp at full size. Otherwise a PNG with a transparent background, at least 500 px wide. Photos and soft gradients are reduced to a handful of thread colours, so they lose detail.

How close is the simulation to the real sew-out?

It draws the exact needle path of the file: same stitches, same order, jumps and trims included. Fabric, stabilizer, tension and machine still matter, so sew a test on a scrap before a production run.

Can I change how a part is sewn?

Yes. Turn on Edit regions and click a part: pick its thread colour (or merge it into another thread), sew a column as satin or fill, turn the fill direction, make it lighter or denser, or drop the underlay. The density map, X-ray (underlay only) and What changes views show the effect before you download.

How small can text be?

Lettering under about 6 mm tall does not read well on fabric. We flag it in the quality notes; make the design wider or shorten the text.

Which fabrics are supported?

Woven cotton, knit jersey, fleece or towel, cap twill and leather or vinyl. Each preset changes density, underlay and pull compensation.

What happens to my image?

It is kept only for a short time so you can download the files, then deleted as new designs come in. There are no accounts and no public gallery of uploads.