Upload PNG Files Online — Free & Lossless

ImgBoxy hosts PNG images in their original quality. Upload your PNG file and get a direct link — transparency preserved, colors accurate, no compression artifacts.

Upload PNG file

Why upload PNG files specifically?

PNG is the preferred format whenever image quality and precision matter more than file size. Unlike JPEG, which uses lossy compression that permanently discards information each time the file is saved, PNG uses lossless compression. The image can be opened, edited and saved again without any degradation. This makes PNG the right choice for graphics that need to stay sharp.

The other key advantage of PNG is its support for an alpha channel — a layer of transparency data that lets pixels be fully or partially see-through. This is essential for logos, icons, UI elements and any graphic designed to sit on top of a background rather than inside a rectangular white box.

How ImgBoxy handles PNG uploads

When you upload a PNG file to ImgBoxy, the file is stored exactly as it was when you uploaded it. We don't convert it to JPEG, we don't strip the alpha channel, and we don't apply additional compression. The direct link you receive points to the original PNG file.

This means that when someone opens your direct link or embeds it in a webpage, they get the same file you uploaded — with the same color values, the same transparency data, and the same level of detail in fine lines and text.

Common uses for PNG uploads

• Logo sharing — transparent background PNG logos for brand guidelines or client approvals.
• UI screenshots — interface screenshots where text readability is critical.
• Design mockups — high-fidelity design files for client reviews.
• Icons and illustrations — vector-exported PNGs for web use.
• Technical diagrams — architecture diagrams, flowcharts and network maps.
• Scanned documents — high-resolution scans where clarity is essential.

PNG transparency in embedded images

One of the most valuable aspects of hosting PNG on ImgBoxy is that transparency works correctly when you embed the image. If you have a logo with a transparent background and embed it in an HTML page using ImgBoxy's direct link, the logo will appear floating over whatever background color the page uses. No white rectangle, no awkward matte color.

The same applies to partially transparent elements — shadows, glows and other effects that use alpha blending will render correctly in any browser that displays the image from the direct link.

PNG vs. other formats — a quick guide

Use PNG when: your image contains text, lines, or shapes with sharp edges; you need a transparent background; you want to avoid quality loss when re-editing the file; or you're working with screenshots and UI elements.

Use JPEG when: your image is a photograph with smooth color gradients and no transparency requirement, and file size is a concern. Use WebP when you want the benefits of both — modern browsers support it well and it achieves smaller files than both PNG and JPEG in many cases. ImgBoxy supports all three formats equally.