Image Resizer
Quickly resize your photos for social media, websites, or printing. Precise control over width and height.
Image Resizer
Change the width and height of your images easily, with options to maintain aspect ratio.
Drop images here or click to select
Why Resize Images?
- Website Performance: Large images slow down page load. Resize to exact display dimensions for faster sites
- Social Media Requirements: Platforms have optimal sizes (Instagram 1080x1080, Facebook 1200x630, etc.)
- Email Attachments: Reduce file size to avoid hitting email attachment limits
- Storage Space: Smaller images take less space on devices and cloud storage
- Print Dimensions: Resize to specific print sizes (4x6, 5x7, 8x10 inches)
- Profile Pictures: Meet circular avatar requirements (usually 200x200 to 400x400)
Common Image Dimensions
| Purpose | Dimensions (px) | Aspect Ratio |
|---|---|---|
| Instagram Post | 1080 x 1080 | 1:1 |
| Instagram Story | 1080 x 1920 | 9:16 |
| Facebook Post | 1200 x 630 | ~1.9:1 |
| YouTube Thumbnail | 1280 x 720 | 16:9 |
| Twitter Header | 1500 x 500 | 3:1 |
| LinkedIn Post | 1200 x 627 | ~1.9:1 |
| Website Banner | 1920 x 1080 | 16:9 |
| Profile Picture | 400 x 400 | 1:1 |
Understanding Image Resolution
DPI (Dots Per Inch) matters for printing, not web display:
- Web/Screen: DPI doesn't matter - only pixel dimensions (1920x1080, etc.)
- Print (Standard): 300 DPI recommended. For 8x10 inch print: 2400x3000 pixels minimum
- Print (Draft/Poster): 150 DPI acceptable for large posters viewed from distance
⚠️ Upsizing Warning: Enlarging small images creates pixelation. You can't add detail that wasn't captured. Always work from the largest original file available.
Resize vs Compress vs Crop
Resize
Changes pixel dimensions (width × height). 4000x3000 → 400x300. Shrinks the entire image proportionally.
Compress
Reduces file size (MB/KB) without changing dimensions. Uses JPG quality settings or format conversion (PNG → JPG).
Crop
Removes edges to change composition or aspect ratio. Cuts the image like scissors, removing unwanted areas.
Frequently Asked Questions
How do I resize an image without losing quality? ▼
Downsizing (making smaller) rarely causes noticeable quality loss - our tool uses high-quality bicubic resampling. Always start from the original high-resolution file, not a previously resized version. Upsizing (making larger) can cause pixelation - limit increases to 120-150% max. For web use, downsizing is usually what you need and maintains excellent quality.
What does 'maintain aspect ratio' mean? ▼
Aspect ratio is the proportional relationship between width and height. A 4000x3000 image has a 4:3 ratio. Maintaining this ratio means if you resize width to 400, height automatically becomes 300, preventing distortion. Images look stretched or squished when aspect ratio isn't maintained. Keep the "lock" icon active to preserve proportions.
What's better: resize by pixels or by percentage? ▼
Use pixels when you need exact dimensions (e.g., "I need 1920x1080 for my website banner"). Use percentage for proportional scaling when exact size doesn't matter (e.g., "make it 50% smaller" or "double the size"). Both methods achieve the same result, just different ways of specifying the output size.
Can I resize images for Instagram or social media? ▼
Absolutely! Common social media sizes: Instagram feed = 1080x1080 or 1080x1350, Instagram Stories = 1080x1920, Facebook shared image = 1200x630, Twitter post = 1024x512, YouTube thumbnail = 1280x720, LinkedIn post = 1200x627. Enter these exact pixel dimensions with aspect ratio locked for perfect platform-optimized images.
Does resizing also compress the image? ▼
Resizing and compression are different operations. Resizing changes pixel dimensions (width/height). Compression reduces file size (MB/KB). Our tool focuses on resizing - the download file format determines compression (JPG includes compression, PNG doesn't). For smallest file size, resize dimensions AND choose JPG format with quality settings.