PNG to WebP Converter
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
Why Convert PNG to WebP?
26% Smaller Files
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%.
Full Transparency Support
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.
Universal Browser Support
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.
Frequently Asked Questions
Does converting PNG to WebP lose quality?▼
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%.
Does WebP support transparency like PNG?▼
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.
Why should I convert PNG to WebP instead of JPEG?▼
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.