You put a logo on a dark header and a white box shows up around it. You add a graphic to a coloured slide and it's sitting in a white rectangle. You paste a sticker into a photo and it looks like it was cut from a magazine. All three are the same problem: the image has a background baked in, and that background is now colliding with whatever it's sitting on.
Fixing it means making the image transparent — stripping the background so only the actual content remains. Once you have a transparent version, you can drop it on any background and it just fits. No box, no halo, no clash.
Why the white box happens (and why JPG is almost always the culprit)
JPG doesn't support transparency. It's not a setting you can turn on — the format just doesn't have a transparency channel. Every JPG has a background, even if that background is white and you can't see it on a white page. The moment you put it somewhere else, the background shows.
Most logos, icons, and graphics you download from the internet are JPGs or PNGs-with-white-background. Even if the file extension says PNG, it might still have a white background baked in — PNG supports transparency, but only if the background was actually removed at some point. A PNG exported from PowerPoint or Word almost always has a white background.
The fix is always the same: remove the background and save as a proper transparent PNG. That's the only file format that most software can use everywhere and actually preserves the transparency.
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Create my thumbnail — freeThe situations where this comes up most
Presentations are the most common one. You copy a logo from a website, paste it into Google Slides or PowerPoint on a coloured background, and the white box ruins the whole slide. Same thing happens with Notion pages, Canva designs, and any tool where you're layering images on a non-white background.
Website headers are another one. A lot of brand logos live as JPGs on company websites. If you download one to use in a design, it's almost certainly got a white background. On a light-coloured header it's invisible. On anything dark it's immediately obvious.
Email signatures are surprisingly common. You add a company logo to your signature and it shows a white rectangle in dark-mode email clients. The logo exists but the background does too, and dark mode makes it visible.
One mistake that undoes everything
After you remove the background and have a clean transparent PNG — don't save it as a JPG. This happens more than you'd think. Someone removes the background, opens it in an image editor, makes a small tweak, and saves as JPG out of habit. The transparent areas immediately fill with white and you're back to square one.
Keep it as PNG all the way through. Only convert if you have a specific reason — and if the destination requires JPG, you've lost transparency and need to account for that in your design.
How to create a transparent version of your image
Upload to Renderly — JPG, PNG, whatever you have. The AI strips the background and gives you a clean transparent PNG back. Takes under a minute, no account needed. From that point, the white box problem goes away on whatever background you put it on.
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