Reduce file size without losing quality
WebP images are up to 26% smaller than PNG while maintaining the same visual quality. Converting PNG to WebP helps reduce file size, improve website speed and boost SEO performance. Transparency is preserved. Nothing is uploaded.
Up to 26% smaller
vs equivalent PNG
Transparency kept
Full alpha channel
Batch convert
Multiple files at once
Drop PNG files here or click to browse
Supports .png — all processing stays in your browser
PNG
WebP
For most web images, WebP is the better choice. The file size reduction directly improves page load speed, which affects both user experience and search rankings. The Core Web Vitals guide covers how image format choices affect performance scores in detail.
If you have PNG files with transparent backgrounds — logos, product cutouts, interface elements — your only options for smaller file formats are WebP and AVIF. JPEG does not support transparency and fills transparent areas with white, which breaks any design that relies on a clear background.
WebP supports the same full alpha channel as PNG. A product image with a cut-out background that currently ships as a 200KB PNG can become a 100 to 140KB WebP with identical visual appearance and preserved transparency.
Further compress your WebP
The main compressor supports WebP output with full quality control and the before/after comparison slider.
Convert JPG to WebP
Also converting JPEG images? Use the JPG to WebP tool for 25 to 34% smaller files than equivalent JPEG.
Need maximum compatibility?
If WebP support is a concern for older software or email clients, convert PNG to JPG instead.
Image formats and Core Web Vitals
How WebP and AVIF affect Lighthouse scores and what formats Google recommends for web performance.
WebP is typically 26% smaller than PNG for photographic content at equivalent visual quality. For graphics, icons and images with flat colours the saving varies PNG sometimes competes with WebP for very simple images. Converting a PNG photograph to WebP often reduces the file size by 40 to 60% in practice.
At the default quality setting of 82%, the output WebP is visually identical to the original PNG at normal viewing sizes. WebP uses a more efficient compression algorithm that achieves smaller file sizes without visible degradation. You can raise the quality slider for more critical images.
Yes. WebP supports a full alpha channel just like PNG. Transparent backgrounds, semi-transparent shadows and layered graphics all convert correctly. This is the key advantage over converting to JPEG, which does not support transparency at all.
Yes. WebP has been supported by Chrome, Firefox, Safari, Edge and Opera since 2020, covering over 97% of global browser usage. It is safe to use WebP on public websites without a fallback for the vast majority of users.
Use PNG to WebP when the image has a transparent background or semi-transparent areas logos, product cutouts, icons, UI elements. JPEG does not support transparency and will fill those areas with white. If transparency is not needed and you want maximum compatibility including in older email clients, PNG to JPG is the better choice.
No. All conversion happens entirely in your browser using WebAssembly. Your PNG files never leave your device. You can verify this by disconnecting from the internet after the page loads conversion still works.
Yes. Drop multiple PNG files at once or select them from the file picker. Each file converts independently. Download them individually or as a single ZIP file.
JPG to WebP
Convert JPEG images to WebP. 25 to 34% smaller than equivalent JPEG.
PNG to JPG
Convert PNG to JPEG for maximum compatibility when transparency is not needed.
HEIC to JPG
Convert iPhone HEIC photos to JPG. No uploads. Metadata removed automatically.
Image Compressor and Editor
Compress PNG and WebP images further. Crop, resize and watermark. No uploads.