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Prepare your vinyl design.

Colour-aware cleanup · processed on your device · no AI

+ Upload image

Create an image in ChatGPT — use your own login

Upload your original image to your own AI software, then paste this prompt. The prompt uses your finished design width from the settings.

Use the image I upload as the reference. Transform it into clean, single-colour heat-transfer vinyl artwork for a T-shirt. Preserve the recognisable subject, composition and important features. Simplify a busy background or remove it so the subject is clear.

Use only pure black and pure white: black is the vinyl to keep and white is the area to remove. No grey, colour, gradients, shadows, mockups or fabric texture. Use a plain white background.

Create smooth, clean outlines with broad solid shapes. Keep intentional sharp corners. Remove unnecessary texture, tiny speckles, thin lines and very fine details. Keep important white gaps open and large enough to weed. Avoid tiny isolated pieces and fragile connections. At a finished design width of [ENTER WIDTH IN MM], aim for at least 2 mm for narrow black features, white gaps and the width and height of separate pieces.

Preserve existing text and spelling exactly if it can be reproduced clearly; do not invent or add text. If an important detail cannot be kept at this size, explain what needs simplifying rather than claiming it is cut-ready.

Return a flat, high-resolution black-and-white image with crisp edges, keeping the original proportions. Leave a small clear margin so nothing is cropped. Output the artwork alone, without placing it on a T-shirt.

Download the resulting image and upload it here. Check fine details at your finished size and do a test cut.

Hide Original Image

Original image

Your image will appear here.

Click or tap the background colour in your image.

Vinyl artwork

Processing…

Black shapes are the vinyl you keep.

Preview on

Choose the treatment that suits your artwork.

Tonal keeps light and dark shapes. Outlines picks up colour boundaries. Silhouette keeps the outer subject shape.

Set your finished design width to check small details.

How this test works

Colour-aware background removal → tonal or outline conversion → shape cleanup → vector outlines. Black is the vinyl to keep; white is the area to weed. All processing happens in your browser.

This converts light and dark areas. It cannot recognise subjects or reconstruct details. Background removal works best with an even background. Inspect text and narrow connections before a test cut.

Adjust artwork

Artwork treatment

Select colour range between light and dark

LightDark

Colour tolerance

Pick a colour in the original image to keep matching shapes. Add keeps existing colours and lets you pick another.

Remove connected background

Background tolerance

Removes matching colour connected to the image edges. Increase gently to avoid losing artwork.

Source artwork

Automatic black / white balance

Black / white balance 128

Move right to keep more dark areas.

Outline sensitivity

Move left to keep more colour boundaries.

Reduce source noise

Brightness 100%

Contrast 100%

Adjusts the source image behind the scenes. The original preview stays unchanged.

Edge smoothing 45%

Softens rough edges before tracing smooth outlines.

Smooth Black lines

Smooths rough black-line edges. Higher settings may remove fine details.

Expand White areas 0.3 mm

Expands white areas by this distance on each edge, including holes and gaps.

Smooth Source Edge & Sharpness

USE THIS FEATURE WITH ZOOM, it softens small jagged edges and outline. 0 turns this off.

Fit shapes to Curve

Fits fewer curve nodes to the outline. Higher tolerance allows more shape changes. 0 turns this off.

Thicken Black & Lines

Total added width. May join shapes or close letter openings.

Thicken small Lines

Expands narrow strokes up to 3 mm wide with roughly parallel sides. Changed edges also receive source-sharpness smoothing at the same mm amount. Broad areas are left unchanged.

Bridge narrow gaps

Closes narrow breaks between black shapes; check important gaps stay open.

Fill small white space 4 mm²

Fills enclosed white gaps smaller than this area with solid black. The outside background stays white. Area depends on your finished design width.

Remove small details 1.0 mm

Removes tiny separate pieces and fills tiny enclosed holes. Long thin lines can remain and trigger a warning.

Remove small separated pieces

Removes a separate black shape if its width or height is below the selected minimum at the finished design size.

EraserCircular · 100% erase 5 mm

Drag across the vinyl artwork to erase. Undo restores erased areas.

Keep corners under 111° sharp

Switches off outline rounding at sharper corners while keeping other edges smooth.

Finished design width

mm

The height follows your image proportions.

Solid outer silhouette

Solid outer silhouette fills enclosed white areas, keeping only the outside shape.

Detail checks are estimates, not a guarantee of a successful cut. Start with a small test cut.

Mikey and the Cat Lady · ShirtVinylStudio