Image Resizer
Resize images to specific dimensions
Original image
Select or drag an image
Browser-supported image files up to 50 MiB.
Quick presets
JPG does not support transparency. Transparent areas use this background color.
Select an image to start converting.
- Name
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- Format
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- Size
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- Dimensions
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Resize modes
- Fit keeps the full image within the requested dimensions while maintaining its aspect ratio.
- Fill crops the center of the image to cover the requested dimensions.
- Stretch forces the exact requested dimensions and can distort the image.
Resized image
The converted image will appear here.
- Name
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- Format
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- Size
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- Dimensions
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Settings changed. Convert again to apply them to the output.
Select an image to start converting.
Resize tips
- Use presets as a starting point, then adjust dimensions for your destination.
- Lock the aspect ratio to preserve the source proportions when changing one dimension.
- Choose JPEG, PNG, WebP or keep the original format; unsupported output encodings fall back to actual PNG.
- Quality applies to JPEG and WebP output.
- All processing happens in your browser; images stay on your device.
About Image Resizer
Our free image resizer changes the dimensions of any photo or graphic to exact pixel values. Pick a preset for an Instagram post or a YouTube thumbnail, or type custom sizes for a web banner. Your images are never uploaded, so they stay private.
Getting image dimensions right matters. Social media platforms crop or distort images that do not match their recommended sizes, and oversized images slow down websites. This online image resizer solves both problems by offering pixel-perfect dimension controls, built-in presets for every major platform, and multiple resize modes including Fit, Fill, and Stretch.
Designed for web developers, social media managers, photographers, and content creators, this resize image tool also supports output format conversion and adjustable quality settings. Lock or unlock the aspect ratio, pick a preset, or type in custom values, the choice is yours.
Key Features
- Three resize modes: Fit (maintain ratio), Fill (crop to fit), and Stretch (ignore ratio)
- Aspect-ratio lock and unlock toggle for flexible dimension control
- 12 built-in presets for Instagram, Facebook, Twitter, YouTube, LinkedIn, and common web sizes
- Custom width and height input with instant recalculation
- Output format selection: keep original, JPEG, PNG, or WebP
- Adjustable quality slider for JPEG and WebP output
- Side-by-side comparison of original and resized images
- Drag-and-drop or click-to-upload file input
- Images are never uploaded to a server
- No watermark on the resized image
How to Use the Image Resizer
- Upload your image: Click the upload area or drag and drop a JPG, PNG, or WebP file from your device.
- Set dimensions: Enter a custom width and height or choose one of the quick presets like Instagram Square (1080 x 1080) or Full HD (1920 x 1080).
- Choose a resize mode: Select Fit to keep the full image within your dimensions, Fill to crop edges, or Stretch to force exact dimensions.
- Pick an output format: Keep the original format or convert to JPEG, PNG, or WebP. Adjust the quality slider if needed.
- Resize: Click "Resize Image" and review the result in the side-by-side comparison panel.
- Download: Click "Download" to save the resized image to your device.
Use Cases
- Social media content: Resize photos to the exact dimensions required by Instagram, Facebook, Twitter, and LinkedIn.
- YouTube thumbnails: Create 1280 x 720 thumbnails that look sharp and professional.
- Website images: Standardize hero images, blog graphics, and product photos for consistent layouts.
- E-commerce product listings: Resize all product images to uniform dimensions for a polished storefront.
- Profile pictures & avatars: Generate square avatars at 128 x 128 or 512 x 512 for apps and platforms.
- Print preparation: Scale images to specific pixel sizes before submitting to print services.
- App development: Create icon sets, splash screens, and UI assets at exact device resolutions.
Frequently Asked Questions
What is the difference between Fit, Fill, and Stretch?
Fit scales the image to fit entirely within the target dimensions while maintaining its aspect ratio. Fill scales and crops the image to completely cover the target area. Stretch forces the image to the exact dimensions, which may distort it.
Can I resize without losing quality?
Downscaling an image generally preserves quality well. Upscaling beyond the original dimensions may introduce softness. For lossless output, choose PNG.
What file formats are supported?
You can upload JPG, PNG, and WebP images. The resizer also lets you convert between formats during the resize process.
Can I use the presets for custom dimensions too?
Yes. The presets are a quick starting point, but you can manually override the width and height fields at any time to enter your own custom values.
Tips & Best Practices
- Lock the aspect ratio: Keep the ratio locked to avoid distorting your image when entering custom dimensions.
- Use Fit mode for social media: Fit mode ensures the entire image is visible, which works best for most social posts.
- Choose WebP for the web: Compare WebP output with other supported formats and review the preview. File size and visible quality depend on the image and encoder settings.
- Start with a preset: Pick a platform preset first, then fine-tune the dimensions if needed.
- Check quality after resizing: Review the side-by-side preview before downloading to make sure the result meets your standards.
- Reduce quality for smaller files: Lowering the JPEG or WebP quality slider can significantly reduce file size when pixel-perfect clarity is not required.