Image Downscaler

Click to upload or drag and drop
Supports JPG, PNG, WebP (Multiple allowed)

What is this Tool?

Image Downscaler is a free, high-performance tool that helps you optimize images for the web. Reduce file sizes by up to 90% without visible quality loss, or resize dimensions to fit specific requirements for social media, email signatures, or web banners.

It works entirely in your browser. Unlike other services that require you to upload photos to a remote server, wowfreeprocesses everything on your computer. This means it works offline, is faster, and guarantees that your personal photos stay private.

How to use

  1. Upload Images: Drag and drop one or multiple images (JPG, PNG, WebP) onto the canvas.
  2. Adjust Settings: Choose your target format (e.g., convert PNG to WebP for better compression), adjust the Quality slider, and set the scaling percentage.
  3. Preview & Compare: See the real-time file size estimation. The green indicator shows how much space you're saving.
  4. Download: Save individual images or clickDownload All to get a ZIP package of all optimized files.

Why do you need it?

  • Boost Website Speed: Large images are the #1 cause of slow websites. Use this tool to compress images before uploading them to WordPress, Shopify, or your custom site to improve Core Web Vitals and SEO.
  • Bulk Conversion: Have 50 photos to resize? Don't do it one by one. Drop them all here and process them in seconds.
  • Modern Formats: Convert old JPEG or PNG files toWebP, a modern format that provides superior compression and quality.
  • Privacy First: Your photos are personal. Since we process them locally, you don't have to worry about data leaks or server storage policies.

FAQ

Q. Which format should I use?

For photographs, 'WebP' is usually the best choice as it offers smaller file sizes than JPEG with better quality. For screenshots or graphics with text, 'PNG' is safer but larger.

Q. Does it support transparent backgrounds?

Yes! If you select PNG or WebP as the output format, transparency is preserved. Note that JPEG does not support transparency (it will turn white).

Q. How many images can I process at once?

There is no hard limit, but performance depends on your device. We recommend batches of 20-50 images for the best experience.