FormatDrop
How-To Guide

How to Convert JPG to WebP on Windows

Windows doesn't have built-in WebP conversion tools, but several free options are available. This guide covers browser-based conversion (requires no install), cwebp (Google's free command-line encoder), and batch conversion with FFmpeg for converting entire folders of JPGs to WebP.

Open JPG to WEBP Converter

Step-by-step instructions

  1. 1

    Method 1: Browser converter (zero install)

    Go to formatdrop.com in Chrome or Edge on Windows. Drop your JPG. Select WebP output. Set quality. Download. Works on any Windows PC without any software installation.

    Go to converter
  2. 2

    Method 2: cwebp command line (best quality)

    Download cwebp from developers.google.com/speed/webp/download. Extract the zip. Open Command Prompt in the extracted folder. Convert: cwebp -q 85 input.jpg -o output.webp. For a path not in your folder: cwebp -q 85 C:\path\to\input.jpg -o C:\path\to\output.webp. Add cwebp to your PATH for global use.

  3. 3

    Method 3: FFmpeg batch conversion

    If FFmpeg is installed: open Command Prompt → navigate to your folder → run: for %f in (*.jpg) do ffmpeg -i "%f" -q:v 80 "%~nf.webp". This converts all JPGs in the current folder to WebP.

  4. 4

    Method 4: IrfanView with WebP plugin

    Download IrfanView (irfanview.com, free) and its All Plugins pack. File → Batch Conversion → add JPG files → Output Format: WebP → Options → set quality → Run. IrfanView's WebP support is via the IrfanView WebP plugin included in the All Plugins pack.

Why convert JPG to WEBP?

Windows 11 can display WebP files in Photos and File Explorer (added in Windows 10 Build 17763), but doesn't include tools to create WebP. For web developers and content creators who need to convert images to WebP for websites, the tools in this guide fill that gap. The browser converter requires no setup; cwebp provides the most control over quality.

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

Can Windows 11 open WebP files?
Yes — Windows 10 (Build 17763+) and Windows 11 display WebP in File Explorer thumbnails and the Photos app. You need the WebP Image Extensions from the Microsoft Store if the built-in support isn't present. However, Windows doesn't include tools to create or batch-convert to WebP — use the tools in this guide.
How do I batch convert JPG to WebP on Windows?
Most efficient: FFmpeg in Command Prompt: for %f in (*.jpg) do ffmpeg -i "%f" -q:v 80 "%~nf.webp". Or IrfanView's Batch Conversion feature which handles hundreds of files. Or PowerShell with cwebp: Get-ChildItem *.jpg | ForEach-Object { & 'C:\path\to\cwebp.exe' -q 85 $_.FullName -o "$($_.BaseName).webp" }
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