Step-by-step instructions
- 1
Choose the right WebP mode for your image
WebP has two modes: Lossy WebP (for photographs and complex images) and Lossless WebP (for graphics, logos, screenshots, and images with flat colours or transparency). Lossy WebP at quality 80–85 is typically 25–35% smaller than equivalent JPG. Lossless WebP is typically 26–34% smaller than equivalent PNG.
Go to converter - 2
Open the appropriate FormatDrop converter
For JPG to WebP: formatdrop.com/jpg-to-webp. For PNG to WebP: formatdrop.com/png-to-webp. For other formats: formatdrop.com/image-converter — select WebP as the output format. All converters run locally in your browser.
- 3
Upload your image file
Drop your image onto the converter. Supported input formats: JPG, PNG, GIF, BMP, TIFF, AVIF, HEIC (on supported browsers), and more. For batch conversion, select multiple files at once.
- 4
Set quality level for lossy WebP
Quality 80: excellent for most web photos — visually indistinguishable from JPG at 90%, but 25–35% smaller. Quality 85: slightly higher quality, slightly larger. Quality 90+: near-lossless, diminishing returns on quality vs. file size. For UI elements, icons, and logos: use Lossless WebP mode regardless of quality slider.
- 5
Implement WebP on your website
Serve WebP to browsers that support it with a PNG/JPG fallback: <picture><source srcset='image.webp' type='image/webp'><img src='image.jpg' alt='...'></picture>. Or, if using a CDN (Cloudflare, Imgix, Cloudinary): enable automatic WebP conversion — the CDN detects the browser's Accept header and serves WebP automatically. Modern build tools (Next.js, Nuxt, Astro) also handle WebP serving automatically.
Why convert JPG to WebP?
Google created WebP in 2010 specifically to address the bandwidth efficiency of JPEG and PNG. The format uses predictive coding for lossy compression and a lossless compression mode using LZ77 compression, Huffman coding, and a color cache. WebP also supports animation (replacing GIF), alpha transparency (replacing PNG), and metadata. By 2020, when Safari added WebP support, the format had achieved near-universal browser coverage. Today, serving WebP instead of JPG/PNG is a standard performance optimisation in web development. The Core Web Vitals metric LCP (Largest Contentful Paint) — a Google search ranking signal — is directly improved by smaller image file sizes, which WebP provides. For any website serving images: WebP conversion is one of the highest-ROI performance improvements available.
Your files never leave your device
FormatDrop runs the conversion engine entirely inside your browser using WebAssembly. No file upload. No server. Nothing stored. You can verify this by opening DevTools → Network tab and watching: zero upload requests.
Frequently asked questions
Will WebP images work in all browsers?
Can I convert animated GIF to WebP?
Is WebP or AVIF better for web images?
No account. No upload. Works in any browser.