Convert PNG images to WebP instantly in your browser. WebP delivers 26% smaller lossless files and up to 34% smaller lossy files compared to PNG, according to Google's WebP compression study. SizeMyPic processes everything client-side — your images never leave your device.
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Supports JPEG, PNG, WebP, and SVG
WebP lossless images are 26% smaller than PNG equivalents, per Google's compression benchmarks. For photographic PNGs, lossy WebP can cut file size by up to 90%.
WebP supports alpha-channel transparency just like PNG, so you keep transparent backgrounds while getting significantly smaller files. Ideal for web graphics, icons, and UI assets.
All major browsers — Chrome, Firefox, Safari, Edge — support WebP as of 2023. CanIUse reports 97% global browser coverage, making WebP a safe default for web images.
Not if you use lossless WebP. The WebP format supports both lossy and lossless compression. Lossless WebP produces a pixel-identical image at roughly 26% smaller file size. If you choose lossy WebP at quality 80+, the visual difference is imperceptible to the human eye while file sizes drop by 60-90%.
Yes. WebP supports 8-bit alpha-channel transparency, identical to PNG. A transparent WebP image is typically 26% smaller than the equivalent PNG. This makes WebP ideal for logos, icons, and UI elements that need transparent backgrounds.
JPEG does not support transparency and uses only lossy compression. WebP supports both transparency and lossless/lossy modes, and produces files 25-34% smaller than JPEG at equivalent visual quality. For web use, WebP is the recommended format by Google's Lighthouse performance auditing tool.