PNG Format & Quality

Two reasons: transparency (JPEG can't have a transparent background) and lossless quality (JPEG re-saves degrade the image; PNG saves don't). Use PNG for logos, icons, overlays, and any image that needs alpha. See PNG vs WebP.

WebP is smaller (~30% less) and supports transparency too — great for the web. PNG is universal: every editor, every OS, every printer accepts it. Our site provides both: the WebP variant for fast loading on web, the PNG for editing and printing.

SVG is vector (scales infinitely, edited as code). PNG is raster (fixed pixels). Use SVG for icons and logos that need to scale; use PNG for photographic / detailed art. We focus on PNG for the latter.

Each pixel has an extra alpha channel (0 = fully transparent, 255 = fully opaque). The checkered pattern you see in our thumbnails marks where transparency is. See why use PNG.

It depends on the image — typically up to 1920px (HD) or higher for special collections. Look for the HD, HD4, or HD5 variant in the download list on any detail page.

8-bit (PNG-8) supports 256 colors and 1-bit transparency — smaller files, good for icons. 24-bit (PNG-24) supports 16M colors and full alpha — larger, better quality. We default to PNG-24 for most assets.

Source files are stored losslessly. We re-encode to optimal PNG size with tools like oxipng (lossless), so file size is small without quality loss. JPEG-format variants where present are explicitly labeled.

Most PNGs are sRGB. For print work, you may need to convert to CMYK in your editor — see Print & Design.

Currently no — APNG isn't widely supported. For animated graphics consider GifDB (our sister project).

If the app rasterizes at a lower zoom, downsampled PNGs can appear soft. Always work with the largest variant you have, then export at the size you need. See Image Editing.