Bulk Image Resizer

Resize up to 20 images at once for web use while maintaining quality.

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This free online tool allows you to resize multiple images for web use. Simply upload your images (up to 20), specify the desired dimensions, and our tool will resize them while maintaining quality.

Your images are processed securely and are not stored on our servers. No registration or email is required.

Supported formats: JPG, PNG, GIF, WEBP. Maximum file size: 20MB per image
If checked, the image will maintain its proportions. If you specify both width and height, the width will be prioritized.
Low (smaller file) 85% High (larger file)

How to Resize Multiple Images for Web

  1. Click the "Browse" button and select up to 20 image files (JPG, PNG, GIF, WEBP).
  2. Enter the desired width and/or height in pixels. If you leave one dimension blank, it will be calculated automatically when "Maintain aspect ratio" is checked.
  3. Choose the output format based on your needs:
    • JPG: Best for photographs and complex images.
    • PNG: Best for images with transparency or simple graphics.
    • GIF: For simple animations and images with limited colors.
    • WebP: Modern format with better compression than JPG and PNG (not supported in older browsers).
  4. Adjust the quality slider to balance between image quality and file size.
  5. Click the "Resize Images" button to start the process.
  6. Once the images are resized, you can:
    • Download individual images by clicking the download button next to each image
    • Download all images as a ZIP file using the "Download All" button

About Image Resizing for Web

Resizing images for web use has several benefits:

  • Faster page loading: Smaller images load more quickly, improving user experience.
  • Reduced bandwidth usage: Smaller file sizes consume less data, which is especially important for mobile users.
  • Better SEO: Page speed is a ranking factor for search engines.
  • Consistent display: Images with appropriate dimensions fit better in your web design.

For best results on the web, consider these guidelines:

  • For full-width banner images: 1200-1600px wide
  • For content images: 800-1000px wide
  • For thumbnails: 150-300px wide
  • File size should ideally be under 200KB for most web images

Related Tools

Resizing Images for the Web

Most photos from a phone or camera are 4,000 pixels wide or more, far bigger than any web page needs. Resizing them before upload makes pages load faster and saves storage.

  • Full-width banners: around 1,920 pixels wide
  • Images within an article: 1,200 to 1,600 pixels wide
  • Product and gallery thumbnails: 400 to 800 pixels
  • Social share images: 1,200 by 630 pixels

Keep "maintain aspect ratio" switched on to avoid stretched images. Choose JPG for photographs, PNG for graphics with transparency or sharp edges, and WEBP for the smallest files where your platform supports it. A quality setting of 75 to 85 is usually indistinguishable from the original.

Files are uploaded over HTTPS and processed on our server only to create your download. They aren't published or shared.

Frequently asked questions

What size should images be for a website?

Match the largest size they will be displayed at, allowing for high-resolution screens. For most content images, 1,200 to 1,600 pixels wide is plenty.

Will resizing reduce quality?

Making an image smaller keeps it sharp. Making it larger than the original can look soft, so avoid enlarging.

Which format should I choose?

JPG for photos, PNG for logos and graphics with transparency, and WEBP for the smallest files if your site supports it.