๐ Image Resizer
Resize images by exact pixel dimensions or percentage. Maintain aspect ratio or set custom dimensions.
Image Resizer: Resize images by pixels or percentage
Image Resizer lets you resize images by pixels or percentage. Upload any image and get a resized image โ all processed locally in your browser, with no uploads and no sign-up.
Resize photos for social media profile pictures
Resize photos for social media profile pictures. This is one of the most common reasons people reach for Image Resizer โ and it handles the job in seconds, entirely in your browser.
Scale images down for email thumbnails
Scale images down for email thumbnails. This is one of the most common reasons people reach for Image Resizer โ and it handles the job in seconds, entirely in your browser.
Batch-resize product images to a uniform size
Batch-resize product images to a uniform size. This is one of the most common reasons people reach for Image Resizer โ and it handles the job in seconds, entirely in your browser.
Everything You Need in a Image Resizer
Powerful features that make Image Resizer fast, private, and free.
Precise Dimensions
Set exact pixel sizes or percentages for pixel-perfect results.
Aspect-Ratio Lock
Maintain proportions automatically to avoid distortion.
Free-Form & Presets
Crop freely or use social-media-ready aspect-ratio presets.
100% Private
All processing is local โ your images never leave your browser.
Free Forever
No sign-up, no watermarks, no hidden limits.
Cross-Platform
Works on any device with a modern browser.
How to Use
Upload
Select the image you want to resize.
Set Dimensions
Enter width and height in pixels, or use the percentage slider.
Resize & Save
Click Resize and download the result.
Detailed User Guide
Step 1: Upload Your Image
Upload a JPG, PNG, or WebP image. The tool automatically reads the original dimensions and populates the width and height fields.
Step 2: Set New Dimensions
You have two ways to resize:
- Exact pixels: Enter width and height in pixels. Check "Keep aspect ratio" to automatically maintain proportions when changing one dimension.
- Percentage: Use the slider to scale by percentage (10%โ200%). This is the quickest way to make an image half-size or double-size.
Step 3: Resize & Download
Click "Resize" to process. The preview updates to show the new dimensions. Click "Download" to save the resized image with -resized appended to the filename.
Common Social Media Sizes
- Instagram Post โ 1080 ร 1080 px (square) or 1080 ร 1350 px (portrait)
- Instagram Story / Reel โ 1080 ร 1920 px (9:16)
- Twitter / X Header โ 1500 ร 500 px
- Facebook Cover โ 820 ร 312 px
- LinkedIn Banner โ 1584 ร 396 px
- YouTube Thumbnail โ 1280 ร 720 px
Pro Tips
- Enlarging an image beyond its original size reduces sharpness โ use AI upscalers for better results
- Reducing size generally maintains excellent quality thanks to high-quality canvas scaling
- Use the percentage slider for quick batch-like scaling (50% = half dimensions, 25% = quarter area)
- For print, aim for 300 DPI. A 1200 ร 1800 px image at 300 DPI prints at 4 ร 6 inches