Free Image Resizer & Compressor — Resize JPG, PNG & WebP Online

How to Use the Image Resizer

1. Drag and drop one or more images onto the upload zone, or click to browse your files.
2. Set the target dimensions in pixels or as a percentage of the original.
3. Choose the output format: JPEG, PNG, or WebP, and set the quality level for lossy formats.
4. Click Resize All, then download individual files or all images as a ZIP.

Why Resize Images in Your Browser

Large unoptimized images are one of the most common causes of slow websites and failed email attachments. A 5MB photo from your phone might only need to be 100KB for a website thumbnail. Resizing and compressing images before uploading them reduces load times, saves bandwidth, and improves user experience — especially on mobile networks.

Unlike server-side tools, this image resizer processes everything directly in your browser using the HTML5 Canvas API. Your photos never leave your device, which is especially important for private or confidential images. There are no file size limits imposed by a server, and the tool works offline once the page is loaded.

Frequently Asked Questions

• What image formats are supported?
  Input: JPEG, PNG, WebP, GIF, BMP, and most browser-readable formats. Output: JPEG, PNG, or WebP.
• What is the difference between JPEG, PNG, and WebP?
  JPEG is best for photos (lossy, small file). PNG is best for graphics with transparency (lossless, larger file). WebP offers the best of both — smaller than JPEG and PNG, supports transparency, modern browser support.
• Does resizing reduce quality?
  Reducing dimensions loses some detail. JPEG quality below 75% becomes noticeably degraded. For most web use, 80-85% quality is the sweet spot between file size and visual quality.