Resize PNG Image Online

PNG is the format of choice for any graphic that needs transparency. Logos, icons, UI elements, stickers, and product cutouts all rely on the alpha channel to sit cleanly on any colored background instead of an ugly white box. That flexibility is exactly why PNG powers so much of modern web and app design. The catch is that sharing the right size is rarely one-click: you open heavy software, wrestle with export dialogs, and still worry about preserving the transparent edges. When you need ten avatars at 512×512 or a row of banners at 1200×630, doing it one by one is slow, and most exports arrive far larger than the slot they need to fill.

UnoIMG’s free PNG resizer removes that friction with a browser-based batch workflow. Drop a single image or a whole folder of PNGs and every file is queued at once. Choose how to size them: scale by a percentage, set an exact target width while the height follows the ratio, enter precise width and height for an exact frame, or snap to a social preset like Instagram Square 1080×1080 or YouTube Thumbnail 1280×720. By default the tool keeps the PNG format, so the alpha channel and every transparent pixel survive the resize untouched. Pick JPEG only when a solid background is fine—and it simply fills your chosen color instead of turning transparency black—or choose WEBP for an even smaller transparent file. A quality slider fine-tunes JPEG/WEBP output while PNG stays crisp.

The payoff reaches everyone who ships transparent graphics. Designers resize logo sets and badge art for cleaner layouts; app developers prepare icon frames that stay sharp on every screen density; marketers scale sticker and overlay graphics for social cards without losing clean edges. E-commerce stores fit product cutouts into category grids, and agencies deliver client assets in exact sizes. Teachers resize diagram art for worksheets, and developers slice screenshots for documentation. Social creators reuse the same resized set across every platform, from profile squares to story frames. Because every result appears with its own preview, you can compare several versions on screen and pull them all down in one ZIP.

Best of all, the whole process is private and free. Resizing runs entirely in your browser, so your PNGs are never uploaded to a server or stored anywhere—nothing leaves your device, which keeps sensitive logos and designs fully on your machine. There is no watermark, no account, and no desktop software to install. Download each image on its own or grab everything at once as a single ZIP, which makes bulk asset prep fast and tidy. Whether you keep PNG for transparency, switch to WEBP for size, or export JPEG with a background fill, UnoIMG fits naturally into any daily workflow, helping you size the perfect image in just a few seconds.