PNG to WebP Converter

Why convert PNG to WebP?

PNG's lossless encoding is thorough and, by modern standards, wasteful. WebP's lossless mode compresses the same pixel data 20–30% smaller — and WebP's quality mode (used here for photographic content) shrinks it far more, often 60–80%, while preserving the alpha transparency that makes PNG the standard for graphics with transparent backgrounds.

For a website, that combination is the whole story: transparency and small files in one format. UI elements, product photos with transparent backgrounds, icons and illustrations served as WebP load faster and look identical. All modern browsers render WebP transparency correctly, so there is no compatibility compromise on the web itself.

This converter keeps your transparency intact when encoding WebP. If you plan further editing rather than publishing, stay in PNG — WebP's advantage is in delivery, not in editing workflows, and each lossy re-save compounds. Publish in WebP, edit in PNG, and convert at the end of the pipeline.

A batch of ten PNG graphics converted to WebP commonly shrinks from tens of megabytes to a handful, while remaining pixel-perfect for icons, logos and UI elements — the categories where PNG's size penalty hurts most.

WebP vs. other formats: quick comparison

WebP is Google's modern format, built to succeed both JPG and PNG on the web. It offers lossy compression 25–35% smaller than JPG at equal quality, a lossless mode 20–30% smaller than PNG, and transparency support in both — one format covering essentially every web image use case.

Browser support is universal since roughly 2020 across Chrome, Firefox, Safari and Edge. The remaining gaps are outside the browser: some older image editors, office suites, upload systems and print workflows still do not accept WebP files, which is exactly why converters in the other direction (WebP to JPG/PNG) exist.

Choose WebP when images are served to a website — it is the best size-to-quality ratio available with no compatibility cost on the modern web. Keep originals in PNG or JPG for editing, and convert to WebP as the final publishing step.

Private by design: conversion without upload

This converter does not send your image anywhere. Decoding and encoding both run inside your browser using the same image pipeline your browser uses to display pictures — there is no server involved, no queue, and no copy of your file on any machine but yours. When you close the tab, everything is gone.

That matters more than it sounds. Server-based converters require uploading the full original to someone else's infrastructure, where retention policies are invisible and breaches are possible. For product photos, ID scans, contracts photographed as images or anything confidential, browser-side conversion is the only design that keeps the risk at zero.

Speed is a pleasant side effect: without the upload-download round trip, a WEBP conversion typically completes in well under a second per image on a modern device, and batch-dropped files process in parallel. The same privacy guarantee holds for every tool on this site.