Centerline Trace: How to Get a Great Result Every Time
What a centerline trace should do for you, how to use this one step by step, and the mistakes that waste time.
What a centerline trace is for
An ordinary trace draws round both sides of every stroke, which is right for a sticker and wrong for an engraver. Centerline trace draws one line down the middle of each stroke instead, the path a V-bit, a pen plotter or a laser scoring pass should follow, so lettering is engraved once rather than outlined twice.
Where most converters let you down
Plenty of tools will happily take your file and give you something back. The trouble is what they give you: many hand you a picture inside an SVG wrapper, or round every corner and fill in the holes in your lettering. You only find out later, when the file will not cut, print, import or open the way you expected.
What you actually want is real paths you can scale, edit and cut. That is the standard this centerline trace is built to.
How to use the centerline trace in 3 steps
- Open the centerline trace and drop in your file.
- Check the result in the preview and adjust the settings if you need to.
- Download the result.
Why Veconvert is the better centerline trace
- Real geometry, never a wrapper. Open the SVG in a text editor and you will find paths, not a base64 copy of your image.
- Two tracers, chosen for the artwork. A logo keeps its square corners and small counters; a photo is traced by an engine made for photos.
- Edit before you download. Recolour any colour or remove it with its shapes, take the background off with one click, and regenerate with finer or smoother settings.
- Every format from one conversion. The same trace gives you SVG, PDF, EPS, DXF and more, without uploading again.
- Private. The file is converted in your browser. Nothing is uploaded, so client artwork stays on your computer.
What happens to your file
The image is read in your browser at its full size. Flat artwork such as logos, icons and lettering goes through this site’s own tracer, which finds where one colour meets another, keeps sharp corners sharp and smooths the curves between them. Photographs and full-colour illustrations are traced with VTracer, the open-source engine built for continuous tone, compiled to run on your own device.
The conversion runs in your browser, so the file is never uploaded: client work, statements and unreleased designs stay on your computer.
Getting the best result: mistakes to avoid
- Set the line width in your engraving software, not in the file: a centerline is a path with no thickness of its own.
- If you have the same picture in several formats, PNG is usually the cleanest source.
- Start from the biggest, cleanest image you have. Around 1000 pixels on the long edge is a comfortable minimum; below about 500 the trace follows the blur.
- Crop away anything you do not want traced. A tight crop gives the tracer more pixels for the part that matters.
- For a logo, fewer colours give cleaner shapes. For a photo, choose a photo-friendly style instead of forcing a flat trace.
- Zoom into the preview before you pay: edges, small lettering and holes are where a trace shows its quality.
What it costs
Yes, converting is free: the conversion and checking the result cost nothing, and the work runs in your browser, so nothing is uploaded. The side-by-side preview on the converter pages comes with a free account. Saving the finished file is paid: $3.49 for one file ($3.99 for a technical file such as DXF, G-code, STL or embroidery) with no account needed, or included in a plan from $6.99 a month.
You see the result before you spend anything, so you only pay for a file you are happy with.
Frequently asked questions
What is the difference between outline and centerline tracing?
An outline trace follows the edges of a stroke and gives a closed shape with a thickness, good for cutting or filling. A centerline trace follows the middle and gives a single open line, good for engraving, plotting or V-carving.
Can I centerline trace a signature or a stamp?
Yes. Scan or photograph the signature or stamp in dark ink on white, upload it, and each stroke comes out as a single line. That is how a signature is engraved on jewellery, a memorial plate or a pen.
Why does my centerline trace have small branches?
Thick blobs and ink spots have their own middle. Raise the detail filter or clean the scan before tracing.
Is it free?
Yes, converting is free: the conversion and checking the result cost nothing, and the work runs in your browser, so nothing is uploaded. The side-by-side preview on the converter pages comes with a free account. Saving the finished file is paid: $3.49 for one file ($3.99 for a technical file such as DXF, G-code, STL or embroidery) with no account needed, or included in a plan from $6.99 a month.
Is my file uploaded?
The conversion runs in your browser, so the file is never uploaded: client work, statements and unreleased designs stay on your computer.