PNG to WebP Converter
Convert PNG to WebP online for free and cut image size for faster websites, with transparency kept. Converted in your browser - your images are never uploaded.
Image Studio
Lossless Priority
Storage Overview
Total Files
0
Ready
0
Drop Media Payload
About this tool
Convert PNG graphics to WebP and typically cut their weight substantially while keeping transparency — the single easiest image optimization for a modern website. Logos, illustrations, and UI assets serve faster as WebP with no visible difference to visitors.
How to Convert PNG to WebP
- 1
Select the PNG assets you want to lighten — site graphics, logos with transparency, illustrations, screenshots.
- 2
Each file is re-encoded to WebP inside your browser, with alpha transparency carried over.
- 3
Download the WebP files and swap them into your site, keeping the PNG originals as your editing masters.
Why Convert PNG to WebP with Wrklyst
- Optimized Without Uploading
- The encoding runs client-side, so pre-launch design assets stay private while being prepared for production.
- Speed Budget Reclaimed
- Lighter images improve load times and Core Web Vitals — the ranking-relevant metrics — with zero visual sacrifice.
- Whole Asset Folders, Free
- Convert an entire site's graphics without a subscription or per-image fee.
Web Image Optimization Tips
- Convert your heaviest above-the-fold image first — it single-handedly moves your LCP score.
- Combine with resizing: serving a 1600px image in a 400px slot wastes more than format ever saves.
- Verify your CDN or host sends the correct image/webp content type after swapping files.
- Audit with your browser's Lighthouse tab before and after — the byte savings show up immediately.
Frequently asked questions
How much smaller is WebP than PNG really?
For typical web graphics, expect 25–35% savings in lossless mode and far more — often 60–80% — if you allow lossy WebP, which remains visually clean for most images. The exact figure depends on image content; flat-color graphics compress spectacularly, while photographic PNGs see the biggest absolute byte savings.
Do all browsers support WebP now?
Yes — Chrome, Firefox, Safari, Edge, and mobile browsers have all supported WebP for years, so serving it unconditionally is safe for any current audience. The old picture-element fallback dance is obsolete. The remaining gaps are outside browsers: some native apps and upload pipelines, not your site's visitors.
Does WebP keep PNG's transparency?
Fully — WebP supports alpha channels in both its lossy and lossless modes, which is precisely why it's the right upgrade path for PNGs. A transparent logo converts to a transparent WebP at a fraction of the weight, something JPG could never offer. Overlays, badges, and cut-outs all convert safely.
Should I convert every image on my site?
Nearly — content images, graphics, and photos all benefit. Two exceptions: favicons (ICO/PNG still expected by some contexts) and images users will download for editing, where a lossless master format serves them better. Keep original PNGs in version control; serve WebP to visitors.