Image Resizer
Resize images to specific dimensions, a percentage of the original, or a maximum width or height — all inside your browser. No uploads, no account, no server. Your image stays on your device throughout.
🔒 Your files stay in your browser
For this file tool, processing happens on your device — we don't receive, store, or transmit your file contents.
Drop an image here or click to upload
JPG, PNG, WebP, GIF — single image
How to Resize an Image
- 1
Upload your image
Drag and drop a JPG, PNG, WebP, or GIF onto the upload area, or click to browse your files.
- 2
Choose a resize mode
Pick Pixels to set an exact width and height, Percentage to scale by a factor, or Max Dimension to constrain the longest side.
- 3
Set the target size
Enter your target dimensions. Use the aspect ratio lock to keep proportions, or disable it to stretch freely. The resulting size is shown before you resize.
- 4
Adjust quality (optional)
For JPG and WebP output, drag the quality slider to control the trade-off between file size and visual quality.
- 5
Resize and download
Click Resize Image. The browser processes the image locally and offers the result as a download.
Features
Three Resize Modes
Resize to exact pixel dimensions, scale by percentage (e.g. 50% of original), or constrain to a maximum dimension while keeping aspect ratio.
Browser-Based
Resizing uses the Canvas API, which runs entirely in your browser. For this tool, your image contents stay on your device.
Aspect Ratio Lock
Lock aspect ratio to keep proportions when entering exact pixel dimensions. Disable it to stretch freely.
Quality Control
For JPG and WebP output, adjust the quality slider to balance file size against visual fidelity. PNG output is always lossless.
Instant Download
Download the resized image directly to your device with the original filename and a '-resized' suffix.
Live Dimension Preview
See the resulting output dimensions before you resize, so you know exactly what you'll get.
How Your Privacy Is Protected
The Image Resizeris built with a privacy-first architecture. Here's how file contents stay on your device — not as a policy, but by how the tool is built.
No file uploads
Your files are processed using browser APIs (Web Workers, Canvas, File API). For this tool, file contents stay on your device.
Local processing only
All computation happens in your browser using your device's CPU. Our servers don't process your file contents.
Works offline
Once the page loads, you can disconnect from the internet and the tool will still work perfectly.
We don't see your files
For this file-processing tool, there's no upload endpoint — files are read and processed entirely by your browser.
Use Cases
Resize Photos for Web Upload
Many websites cap image uploads at 1MB or a few megapixels. Resize before uploading to avoid rejection or slow uploads.
Create Thumbnails
Scale images down to thumbnail dimensions for galleries, blog post previews, or product listings.
Fit Form Upload Limits
Applications, portals, and HR systems often restrict image uploads to small dimensions. Resize to meet their requirements without a separate app.
Resize Screenshots for Documentation
High-DPI screenshots from retina displays are often twice as wide as needed. Resize to 50% before embedding in docs or wikis.
Prepare Images for Email
Large images slow down emails and can break inbox size limits. Resize photos before attaching them to messages.
Resize for Social Media
Scale images to fit the expected dimensions for different platforms' posts, headers, or profile pictures.