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Removing a background from your design file

How to remove a white or colour background from a design file before uploading it for print

This is one of the questions we're asked most often, so we've created a comprehensive guide to help you get the best results.

Inkthreadable doesn't offer background removal as a service. We need all design files supplied print-ready, meaning the file is ready to be printed exactly as you've uploaded it.

How do I know if my design file has a background?

How your device displays images with transparent backgrounds can vary by make & model, or even depending on the software you're using. It's not always obvious.

If you see a block of pure white (or any other colour) behind your design it's highly likely that's a background you'll want removed. A checkerboard pattern, or no noticeable colour block, usually means the background is transparent.

Note: AI generated images can often be created with a checkerboard behind the image when the prompt includes asking for a transparent background. The AI is adding a checkerboard as a background because it doesn't understand the prompt, but this doesn't mean the background is transparent. Be careful when trusting AI generated results.

Inkthreadable's product creator tool will pop up with a warning if no transparent pixels are detected when adding the product to your basket. It's a handy tool if you're unsure whether your image has a transparent background. You can continue past this warning if you want the background to print anyway.

When are backgrounds automatically removed?

Any files uploaded with a background will have that background printed, except in some specific cases:

  1. Your background is pure white, and the design is being printed using dye sublimation.
    Dye sublimation transfers ink from a transfer sheet to a substrate layer above a white surface. Dye sublimation printers use CMYK inks, so a white channel isn't available anyway, and the white surface gives the brightness needed for the colours in your design to pop. This means any pure white is automatically removed from any print file before printing.

  2. Your background is pure white, and you're printing a poster.
    We use white paper, and again our poster printers don't have a white ink channel, so any pure white will be automatically removed from the design.

  3. Your background is pure white, and you're printing onto a white product using DTG.
    White on white isn't possible with DTG, so any white in your file is automatically removed by the print software.

In each of these examples, if your background is anything but pure white (#ffffff) the print software will replicate it during printing and the background will be printed.

If you're printing any posters or anything using dye sub, and you have designs with any other background that you don't want printing, you'll still need to follow the steps below to remove the background.

In all other circumstances, a background will be printed if it is included in your design. If a background is printed and you didn't want it included, this won't be considered a print fault and you'll have to place a new order to correct it.

This means it's important your print file is right at the time of placing your order, and that any background is removed so that the print you get is the one you wanted.

The tricky part with background removal is accurately removing the unwanted pixels without affecting the quality of your design file. Some free tools export at screen resolution (72 ppi) rather than print (300 ppi) so we need a solution that's easy to use, preferably free, and that outputs files at the quality needed for print.


We'll preface the below suggestions with a warning that if your design file is not print quality at the start of the process, it won't be at the end of it. You can't add quality to a file after it's been saved, you can only subtract from it. This means you need to start the process with a print-ready file saved at 300 ppi, or the best quality file you have.

AI generated design files, even those saved at 300 ppi, may still not be high quality - the resolution of a file doesn't guarantee the quality of what's saved inside it. Most of the free or easily accessible AI tools like ChatGPT will output raster images that may appear very pixellated due to the way this type of software generates images so check you're happy with your design before printing!


How to remove a background

There are different options available which have different methods and might give different results. Paid background removal tools will always give better results, you can still achieve good results with free alternatives.


Our recommendation: Canva

We'll be upfront - this one isn't free. But if you're creating designs regularly, Canva's Background Remover gives consistently clean results and sits inside the same tool you'll use to build the rest of your artwork, which saves a lot of jumping between programs.

Canva's background removal tool is part of Canva Pro. Downloading with a transparent background is a Pro feature too, so if background removal is the only thing you need, one of the free options below might suit you better if you won't make use of the other Pro features.

Free accounts usually get a single trial use or a 30-day Pro trial, which is plenty to see whether you like it, or to remove all the backgrounds needed before you're asked to pay.

We have a blog post explaining how to use Canva to create print files & save with no background which may be useful if you're just getting started.

To remove a background, sign up to Canva Pro and follow these steps:

Before anything else, set your canvas to the size you're actually printing at. Canva exports based on your canvas dimensions, so a design created at Instagram size won't hold up on a t-shirt no matter how good the background removal is.

Create a custom size canvas in pixels. A 32 x 50 cm canvas would be 3780 x 5906 px. If you're unsure, you can use our pixel calculator to determine your canvas size. With your canvas set up:

  1. Upload your image.

  2. Click on the image, and choose BG Remover.

  3. Wait for the automated tool to do its work, then use the Erase and Restore brushes to tidy up anything missed. You can zoom in to work in detail.4

  4. Go to Download, choose PNG, and make sure Transparent background is ticked.

Note: don't download as a JPG. JPG files can't store transparency, so even if your background has been removed it'll be replaced with a pure white background as a JPG.


Free alternatives

If you'd rather not pay, there are three tools we're happy to point you towards. All of them will let you export at print quality, with mixed results depending on the quality of your file.

Adobe Express

This is the quickest of the three, but you'll need to sign up for a free Adobe account before you can download anything.

  1. Upload your image. The tool will remove your background automatically.

  2. Click download. You'll be prompted to sign in or sign up for an account before you can download your file.

Your file will need to be under 40MB for this method, and since it's a free method the results may vary. Review the downloaded file carefully before using it for print.

Note: if you carry on into the full Adobe Express editor rather than downloading straight away, your canvas size decides the export dimensions, not your original image.

Click outside the canvas, set the background to No fill, then choose Transparent PNG. Check the pixel dimensions of the file you've downloaded before you upload it to us to be sure it's what you expect.

Photopea

This is the one we'd recommend if your design is fiddly. It's a free browser based alternative to Photoshop, and there is plenty of content online to help you use it.

  1. Head to Photopea and open your image.

  2. Go to Select and Remove BG for a one-click result.

  3. If you're not happy with the result, try Select and Magic Cut instead. You'll need to paint over the areas you want to keep/remove, and keep adjusting as you go.

  4. When you have a result you're happy with, go to File > Export As > PNG.

GIMP

This is a free program you can download to your Mac or Windows computer. It's a raster image editor you don't need an internet connection or account to use.

  1. Download and install GIMP. (Please double check anything you're downloading/installing - verify the source is legitimate.)

  2. Open your design file.

  3. Right click your layer and add an alpha channel.

  4. Use the Foreground Select tool to paint over the areas you're keeping, then delete the background.

  5. Export with File > Export As, and type .png on the end of your filename.

GIMP will take longer to learn than the other methods, but it's more capable and gives you complete control with a repeatable process you can use reliably when you need it.


Remove.bg

Remove.bg is usually the first tool people find, and the cutouts genuinely are very good.

The problem is the free download, which comes out at around 612 x 408 pixels. To put that in context, a full front DTG print at 300ppi needs 3780 x 5906 pixels. In this example you'll be uploading a file roughly a tenth of the size we need, and the result won't be anything like what you see on screen.

There are paid plans which will likely output larger files, but we haven't tested these ourselves so can't comment on the quality.


What to check before you upload

  1. Your file is a PNG at 300ppi.
    This is what we ask for across every single print method & product in our catalogue. High quality prints start with a high quality file. Removing a background can only lose pixels, never add them, so always start from the biggest original you've got and make sure the output is what you need it to be.

  2. It's big enough for where it's going.
    Here's what 300ppi works out as at some common print sizes:

Print area

Likely product/position

Pixels you need

32 x 50 cm

T-shirt front or back print

3780 x 5906

21 x 29.7cm

A4 poster or framed print

2480 x 3508

10 x 10cm

Left chest decoration

1181 x 1181

Remember that enlarging a design after you've saved it drops the quality - the pixels stretch over a bigger area and the ppi falls. Once a file is saved you can't get that quality back, so you'll need to go back to your original artwork and save a fresh copy at the size you need.

Some more tips:

Keep it in RGB.
Don't convert anything to CMYK - our printing software handles that conversion for you.


Check the edges at 100% zoom.
Two things catch people out. The first is fringing, a thin pale outline left behind by the old background, which is invisible on screen and very obvious on a dark garment. The second is hair or fur that's been cut off in clumps.

Go easy on soft edges.
Heavy feathering, drop shadows and gradients that fade out to transparent can be unpredictable in print, particularly on coloured garments. Crisp edges give you a much more reliable result.

Preview it against the garment colour. Not against white, and not against the checkerboard. Drop your cutout onto the actual colour you want to print on to see how it looks.


Common questions

Can I remove a background in Canva for free?

Not really. The Background Remover is a Canva Pro feature, and free accounts generally get one trial use or the 30-day trial. What you can do is remove the background in Adobe Express or Photopea and then upload the finished transparent PNG into a free Canva account to build the rest of your design.

Why am I getting a warning that my background isn't transparent?

Because your file has a background, even if you can't see it. This is most common with JPGs, which can't store transparency, and with designs saved from tools that flatten the image on export. You'll need to close the warning and upload a different file - if you confirm and carry on, we'll print the background too, unless it's pure white on anything with a white background.

Why does my design look pixelated when printed?

This usually means the file was too small for the print size. Either the original was low quality to begin with, or the tool you used downscaled it when you downloaded it. Check your pixel dimensions against the table above for an idea of sizing before uploading.

Which free tool is best?

Canva, if you're happy to pay. If you want a free solution there's something to be said for Abobe Express & other automatic tools, but we'd still recommend the options that give you control. So Photopea if your design is complicated, especially anything with hair or fine detail, or GIMP if you want to work offline.

Can I upload a transparent JPG?

No, JPGs don't support transparency. Save your file as a PNG instead.

Will removing the background make a small image printable?

No, it doesn't add any detail. If the original is too small for the size you're printing, you'll need a better original.

There's a white outline around my design. How do I get rid of it?

That's fringing left over from the old background. Zoom in and erase it by hand, or use the edge brushes in Photopea or Canva. It shows up worst on dark garments, so always check against the colour you're actually printing on.

Do I need to convert my file to CMYK?

No. Upload in RGB and we'll take care of the conversion.


Still stuck? Get in touch and let us know which product you're creating - we'll take a look at your file for you.

Free plans and features change fairly often. This was all correct when we wrote it, but it's worth checking the provider's own site before relying on a specific limit.

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