Convert PNG to WebP

PNG → WebP in your browser. Batch, private, and production-tuned.

Files never leave your browser — 100% private

Batch up to 20 images · 20 MB per file · no watermarks, no signup

Drop anywhere

Drag files onto any part of this page

Paste from clipboard

Copy an image, press Ctrl+V

Best-in-class encoders

MozJPEG + oxipng + sharp-YUV WebP · production tuned

Convert PNG to WebP with alpha channel intact. WebP typically produces files half the size of PNG for images with transparency — while preserving pixel-perfect edges. Batch up to 20 files, 100% client-side.

The output uses the same production-grade encoder pipeline as our dedicated Convert to WebP tool: MozJPEG's trellis multipass for JPEG, oxipng at max effort for PNG, sharp-YUV libwebp for WebP, and SSIM-tuned libavif for AVIF. Files are optimized to be measurably smaller than what most online converters produce at the same quality setting.

Why convert PNG to WebP?

Common reasons to use WebP instead of PNG: UI graphics, product cutouts, blog images.

How the conversion works

Your PNG file is decoded in your browser using WebAssembly codecs (no upload, no server processing), then re-encoded as WebP using our production-grade encoder pipeline. The full round-trip typically completes in under a second per file on modern hardware. Nothing about your file is logged, cached, or transmitted anywhere.

Batch, privacy, and downloads

Drop up to 20 PNG files at once. Each file shows a preview, its before/after size, and a per-file download button. Hit "Download all" to get a single ZIP archive of all converted WebP files. Filenames preserve the original name and swap the extension automatically.

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Free

Convert Image to WebP

Convert JPEG, PNG, HEIC, AVIF, GIF, BMP, TIFF, or SVG to WebP with visually-lossless quality. Batch up to 20 files. 100% client-side.

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Convert Image to AVIF

Convert JPEG, PNG, HEIC, WebP, GIF, BMP, TIFF, or SVG to AVIF — the next-generation format that beats WebP by 10–20% at the same visual quality.

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Convert Image to JPEG

Convert HEIC, PNG, WebP, AVIF, GIF, BMP, TIFF, or SVG to JPEG using MozJPEG — the smallest, sharpest JPEG encoder available. Batch up to 20 files.

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Convert Image to PNG

Convert JPEG, WebP, AVIF, HEIC, GIF, BMP, TIFF, or SVG to PNG — losslessly optimized with oxipng for the smallest possible file. Batch up to 20 files.

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Image Compressor

Shrink your images without changing their format. JPEG stays JPEG, PNG stays PNG. MozJPEG + oxipng + libwebp — batch up to 20 files, 100% client-side.

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Smart Image Optimizer

One-click web-ready images. The optimizer picks the best modern format (WebP or PNG) per file, applies best-in-class encoder tuning, and hands you production-ready assets.

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Tool FAQs

Everything you need to know about using PNG to WebP Converter.

Is this PNG to WebP converter free?+

Yes — completely free, no signup, no watermarks, no upload limits beyond the client-side batch cap of 20 files and 20 MB per file. Because everything runs in your browser using WebAssembly, there's no server cost for us to pass on.

Are my PNG files uploaded anywhere?+

No. The tool loads WebAssembly codecs directly into your browser and processes every file locally. Open your browser's Network tab while you drop a file — you'll see zero requests fire. That makes it safe for private photos, unreleased designs, medical images, or any file you'd rather not share.

How is the WebP quality?+

The tool uses the same production-grade encoder as our dedicated Convert to WebP converter — MozJPEG for JPEG, oxipng for PNG, sharp-YUV libwebp for WebP, SSIM-tuned libavif for AVIF. At the default Balanced preset, output is visually indistinguishable from the source at normal viewing distances.

Can I batch-convert PNG to WebP?+

Yes — drop up to 20 files at once. Each file is processed serially in your browser (WebAssembly memory stays bounded) with a per-file progress bar. When done, download files individually or grab a single ZIP of everything.