Image Resizer
Resize any image by dimensions or percentage. Everything happens locally in your browser.
Drag & drop an image here
Supports PNG, JPEG, WebP, GIF, and more.
What is an Image Resizer?
An image resizer changes the dimensions (width and height) of an image. Whether you need to resize images for social media posts, website thumbnails, email attachments, or print materials, our free online image resizer lets you specify exact pixel dimensions or scale by percentage. Processing happens 100% in your browser using the Canvas API — your images are never uploaded to any server.
How to Resize Images Online for Free
- 1Upload your image
Select or drag and drop the image you want to resize.
- 2Set dimensions
Enter the desired width and height in pixels, or scale by percentage.
- 3Lock aspect ratio
Toggle "Lock Aspect Ratio" to prevent distortion when resizing.
- 4Download resized image
Click "Download" to save the resized image in your preferred format.
Frequently Asked Questions
Will resizing reduce image quality?
Downsizing (making smaller) generally preserves quality well. Upsizing (making larger) can reduce quality because the browser must interpolate new pixels. For best results when upsizing, use small increments.
Can I resize multiple images at once?
Currently, the tool processes one image at a time. Each image is processed instantly in your browser.
What is aspect ratio locking?
When aspect ratio is locked, changing the width automatically adjusts the height (and vice versa) to maintain the image's original proportions, preventing distortion.
Why Use DevDeck?
Unlike cloud-based resizers that upload your images, DevDeck resizes everything locally in your browser. Your photos and screenshots stay on your device — completely private.