Resize Image by Pixels - Free Online Image Resizer
Need to resize images to specific pixel dimensions? Our free online image resizer lets you adjust image width and height to exact pixel values. Perfect for social media posts, website images, profile pictures, and meeting platform-specific size requirements.
How to Resize Images by Pixels
- Upload your image file (JPG, PNG, WebP, or any image format)
- Enter your desired width and height in pixels
- Choose whether to maintain aspect ratio or not
- Click "Resize Image" to process
- Preview the resized image and download it
Understanding Aspect Ratio
Aspect ratio is the proportional relationship between an image's width and height. When you maintain aspect ratio, the image scales proportionally without distortion. If you uncheck "Maintain aspect ratio," the image will stretch or compress to fit your exact dimensions, which may cause distortion.
When to Maintain Aspect Ratio
- Photographs: Always maintain aspect ratio to avoid distortion
- Portraits: Keep people looking natural without stretching
- Logos: Preserve brand identity with correct proportions
- Product Images: Show items in their true proportions
When to Use Custom Dimensions
- Platform Requirements: When exact dimensions are mandatory
- Background Images: To fill specific spaces in designs
- Thumbnails: When you need precise grid layouts
- Banners: To fit specific header or footer dimensions
Common Social Media Image Sizes
Instagram Dimensions
- Square Post: 1080 x 1080 pixels
- Portrait Post: 1080 x 1350 pixels
- Landscape Post: 1080 x 566 pixels
- Story/Reels: 1080 x 1920 pixels
- Profile Picture: 320 x 320 pixels
Facebook Dimensions
- Feed Post: 1200 x 630 pixels
- Profile Picture: 180 x 180 pixels
- Cover Photo: 820 x 312 pixels
- Story: 1080 x 1920 pixels
Twitter/X Dimensions
- Tweet Image: 1200 x 675 pixels
- Profile Picture: 400 x 400 pixels
- Header Image: 1500 x 500 pixels
LinkedIn Dimensions
- Post Image: 1200 x 627 pixels
- Profile Photo: 400 x 400 pixels
- Cover Image: 1584 x 396 pixels
Common Use Cases
- Social Media Marketing: Resize images for optimal display on various platforms
- Website Optimization: Create properly sized images to improve page load speed
- Email Marketing: Resize images to load quickly in email clients
- Profile Pictures: Meet specific pixel requirements for avatars and profiles
- Thumbnails: Create consistent thumbnail sizes for galleries and grids
- Print Preparation: Resize images to specific dimensions for printing
Benefits of Our Image Resizer
- Precise Control: Enter exact pixel dimensions for width and height
- Aspect Ratio Lock: Option to maintain proportions or use custom dimensions
- All Formats Supported: Works with JPG, PNG, WebP, HEIC, and more
- Instant Processing: Fast browser-based resizing with no upload time
- 100% Private: Your images never leave your device
- Unlimited Use: Resize as many images as you need for free
Frequently Asked Questions
Will resizing reduce image quality?
Resizing down (making images smaller) typically preserves quality well. Resizing up (making images larger) can reduce quality and make images appear blurry or pixelated because you're adding pixels that don't exist in the original. For best results, always start with high-resolution images when you need to resize up.
What happens if I only enter width or height?
If you only enter one dimension (width or height) and have "Maintain aspect ratio" checked, our tool will automatically calculate the other dimension to maintain the image's proportions. This prevents distortion and keeps the image looking natural.
Why is my resized image distorted?
Image distortion occurs when you uncheck "Maintain aspect ratio" and enter dimensions with different proportions than the original. For example, making a 1000x1000 square image into 1000x500 without maintaining aspect ratio will squash it. To avoid distortion, always keep "Maintain aspect ratio" checked unless you specifically need custom dimensions.
Are my images safe when using this tool?
Yes, completely safe! All image processing happens in your browser using JavaScript. Your images are never uploaded to any server or stored anywhere. This ensures complete privacy and also means faster processing since there's no network transfer.