Tip: JPG/WebP respect the Quality slider. Some formats (TIFF/ICO/GIF) may not be supported by all browsers.
For the broadest compatibility, export PNG or JPG.
Resizing a raster image (JPG, PNG, WebP, GIF, BMP, TIFF) changes the number of pixels it contains. Because raster graphics are made of a fixed grid of pixels (unlike vector graphics such as SVG), scaling down usually removes detail, while scaling up cannot invent new detail. Modern browsers apply high-quality interpolation when you resize on a canvas, which keeps edges smooth, but it can’t restore texture that wasn’t there. For the best results, avoid enlarging photos far beyond their original dimensions, and prefer downscaling in sensible steps (e.g., 2–4× smaller rather than 20×).
For screens, pixel dimensions (e.g., 1600×900) determine how large an image appears. PPI/DPI metadata has little effect on web display. For printing, pixel count and target DPI both matter: a 3000×2400 image at 300 DPI prints crisply at 10×8 inches. If you plan to print, keep the largest, highest-quality version; for the web, export only as large as needed to reduce file size and loading time.
Maintain the original aspect ratio to avoid distortion. If you must change shape (e.g., square avatar from a rectangular photo), crop first, then resize. Our aspect-ratio lock helps prevent stretched faces and squashed logos.
When exporting JPG/WebP, use the quality slider to balance clarity and size. Higher quality preserves fine details but increases file weight. For web use, aim for the smallest image that still looks clean at its intended display size. If an image contains sharp edges or text, consider PNG or high-quality WebP to avoid compression halos.
Quick rule of thumb: pick the smallest format and dimensions that still look crisp at the largest size your site or app will display.
Cut width and height in half and you drop 75% of the pixels. That’s why a tiny resize can slash file size without looking worse.
Browsers use high-quality downscalers (Lanczos-esque) on canvas. Even without “AI upscalers,” you get surprisingly clean shrinks for photos and UI.
WebP can replace both PNG (alpha) and GIF (animation). Safari joined late, but modern browsers now handle both in one format.
An .ico file can bundle multiple sizes (16–256 px) inside one file. Windows picks the sharpest one for each context.
Above quality ~92, JPEG gains are hard to see but file size balloons. Dropping to the 80–92 range often halves weight with little visible change.
