How to convert PNG to WebP, JPG to PNG, and more
imglogotool.com Image Converter is a free browser-based tool that converts images between PNG, JPG, WebP, AVIF, and JPEG XL using WebAssembly codecs — the same C/C++ libraries (MozJPEG, libwebp, libavif) used by professional image editors. No files are uploaded to any server.
To convert PNG to WebP or any other format, drop your files into the converter above and select the output format. Conversion starts instantly — each file is encoded via WebAssembly and ready to save.
Drop your images into the converter. Supports PNG, JPG, WebP, AVIF, JPEG XL, GIF, BMP, SVG, ICO, and TIFF. Multiple files supported for batch conversion.
Select the output format. Choose PNG (lossless), JPG (small, universal), WebP (25-35% smaller than JPG), AVIF (50% smaller than JPG), or JPEG XL (next-gen, versatile). Adjust quality for lossy formats. Conversion starts automatically.
Save your files. Click Save on each file, or download all as a ZIP. Output file size is shown instantly. No server upload.
Format comparison
| PNG | JPG | WebP | AVIF | JPEG XL | |
|---|---|---|---|---|---|
| Transparency | Yes | No | Yes | Yes | Yes |
| Compression | Lossless | Lossy | Both | Both | Both |
| File size | Largest | Small | Smaller | Smallest | Smallest |
| Encode speed | Fast | Fast | Fast | Slower | Fast |
| Browser support | 100% | 100% | 97% | 93% | Safari 17+, Chrome 145+ |
Common conversions
PNG to WebP — 30-50% smaller with transparency preserved. Best for web optimization.
JPG to WebP — 25-35% smaller at equivalent quality. Most common web optimization.
PNG to AVIF — maximum compression, 50% smaller with near-identical quality.
WebP to PNG — for compatibility with older software or print workflows.
JPG to JPEG XL — lossless JPEG recompression, 20% smaller with zero quality loss. JPEG XL can also encode new images with superior quality-to-size ratio.
Related tools
Working with SVG files? Use the SVG to PNG Converter — convert SVG to PNG, JPG, WebP, AVIF, or JPEG XL at any resolution.
PNG files too large? Use the PNG Compressor — reduce file size up to 80% with smart color quantization.
Need a website favicon? The Favicon Generator converts any image to multi-size .ico and PNG icons.
Publishing an Android app? The Feature Graphic Generator creates 1024×500 Play Store banners.
Frequently asked questions
How do I convert PNG to WebP?
Drop your PNG file into the converter above and select WebP as the output format. Conversion starts automatically — click Save to download the WebP file.
Is this image converter free?
Yes, 100% free. No signup, no watermark, no file size limit, no daily quota. All processing runs in your browser via WebAssembly.
Are my images uploaded to a server?
No. Your images never leave your device. All conversion runs locally in your browser using WebAssembly codecs.
What makes WASM codecs better than Canvas?
Canvas converters use the browser's built-in encoder with limited options. WASM codecs use optimized C/C++ libraries (MozJPEG, libwebp, libavif) — better quality, smaller files.
Does converting JPG to PNG improve quality?
No. JPG compression permanently discards data. Converting to PNG preserves current quality without further loss but cannot restore lost detail.
Which image format should I use for my website?
WebP for most images — 97% browser support, 25-35% smaller than JPG. AVIF for maximum compression at 93% support. JPEG XL for future-proofing (Safari 17+, Chrome 145+). PNG for logos needing lossless quality.
Can I batch convert multiple images?
Yes. Drop multiple files at once. All files convert automatically. Save individually or download all as a ZIP.
Why is AVIF encoding slower?
AVIF uses the AV1 codec with more complex algorithms for superior compression. Encoding takes 2-5x longer than WebP or JPG.