PNG to WebP Converter

When to use this

You're optimizing web assets and PNG files are eating your performance budget. A typical PNG hero image at 1200×800 runs 1–3 MB. The same image as WebP at 85% quality: 200–400 KB. That's the kind of reduction that moves your Lighthouse score from orange to green.

WebP is the web performance format. Every major browser has supported it since 2020 (yes, including Safari). If you're building a website, blog, e-commerce store, or web app and still serving PNGs for photographs or complex graphics, you're leaving performance on the table.

When to skip it: if you need lossless transparency for design assets that will be layered and re-exported (keep the PNG), or if you're targeting very old software that predates WebP support. For web delivery in 2026, though, WebP is the default right answer.

Good to know

WebP keeps transparency. Unlike JPG, WebP supports alpha channels. Your transparent PNGs convert to transparent WebPs — no white background fill, no lost compositing. This is one of WebP's biggest advantages over JPG.

25–35% smaller than PNG, consistently. Across photographs, illustrations, and UI graphics, WebP reliably beats PNG on file size. For photographic content the savings are even larger — often 60–80% smaller.

Lossy is usually the right call. This converter uses lossy WebP compression. At 80–85% quality, the output is visually identical to the lossless PNG source. Only use 95%+ if you're working with pixel-precise graphics where every detail matters.

Next.js and most CDNs auto-convert. If you're using a modern framework or CDN (Vercel, Cloudflare, Cloudinary), they often serve WebP automatically. Check whether you actually need to convert manually before batch-processing your entire image directory.

Quick Reference

Feature	PNG	WebP
Compression	Lossless only	Lossy + lossless
Transparency	Yes (alpha)	Yes (alpha)
Typical photo size	1–3 MB	200–400 KB
Browser support	Universal	All modern (post-2020)
Design tool support	Universal	Growing (Figma, Sketch yes)
Best for	Editing, archiving	Web delivery