Resize Images by Pixels or Percentage
Pixel resizing creates an exact output canvas, such as 1280 × 720. Percentage resizing scales every uploaded image relative to its own dimensions, so 50% turns a 2400 × 1600 image into 1200 × 800. Downscaling is useful for web pages, email attachments, thumbnails, and storage; upscaling cannot recover detail that was not present in the source.
Fit vs Crop for Exact Dimensions
Fit
Keeps the complete image inside the requested canvas. When aspect ratios differ, PNG and WebP outputs have transparent padding; JPEG outputs use white padding.
Crop
Fills the requested canvas and removes equal excess from the center-facing edges. Use it when an exact thumbnail or banner ratio matters more than retaining every edge.
Choose JPEG, PNG, or WebP Output
JPEG
A practical choice for photographs. It does not support transparency, so transparent areas become white.
PNG
A lossless choice for screenshots, text, logos, and graphics that need transparent pixels.
WebP
A modern format for photos or graphics, with adjustable quality and transparency support.
Common Image Size Starting Points
These presets are convenient canvas starting points, not permanent platform rules. Social networks may change recommendations, crop previews differently by device, or reserve safe areas for text and controls.
| Use | Starting size | Ratio |
|---|---|---|
| Square post | 1080 × 1080 | 1:1 |
| Vertical story | 1080 × 1920 | 9:16 |
| Video thumbnail | 1280 × 720 | 16:9 |
| Wide banner | 1500 × 500 | 3:1 |
| Portrait pin | 1000 × 1500 | 2:3 |
How to Resize an Image Without Distortion
1Add your images
Choose one image or a batch. The tool reads each source dimension before any resize begins.
2Choose pixels or percentage
Use exact pixels for a fixed canvas, or percentage to scale every image from its own original dimensions.
3Keep proportions or choose a mode
Lock the aspect ratio to avoid stretching. For a different target ratio, use Fit for the whole image or Crop to fill the canvas.
4Compare and download
Review the resized dimensions and file-size change, switch between original and resized previews, then download one image or a ZIP.
Continue Your Image & Design Workflow
Calculate proportional target dimensions with the Aspect Ratio Calculator, then reduce the resized file size with the Image Compressor, change its format using the Image Converter, or adjust the composition with the Image Cropper. You can extract a palette through the Color Picker or prepare vector artwork using the SVG Converter. For website icons, turn the finished square image into an ICO, Apple touch icon, and web app bundle with the Favicon Generator.
For the history behind film, digital, smartphone, and AI-assisted photography, continue with Cameras: Then vs Now.
Frequently Asked Questions
Technical note: Browser canvas re-encodes the visible raster. EXIF, camera, GPS, DPI, color-profile, and other source metadata are generally not retained. Animated GIFs become a still frame. Browser and device memory limits vary, so this tool caps each output at 8,192 px per side and 40 megapixels.