Resizing images is one of the most common tasks in web development and content creation. Whether you need to create thumbnails, optimize images for social media, or meet specific dimension requirements, this tool resizes images quickly and accurately. It uses the browser's Canvas API for high-quality scaling, supports aspect ratio locking, and outputs in PNG, JPEG, or WebP format.
Drop an image here or click to select
Supports PNG, JPEG, WebP, GIF, BMP, SVG
Upload an image by dragging and dropping or clicking to browse. Set the target width and height in pixels, or use percentage scaling. Lock the aspect ratio to prevent distortion. Choose the output format (PNG, JPEG, or WebP) and quality level for lossy formats. Click 'Resize' to process the image, then preview the result and download. Multiple preset sizes for common use cases (social media, web thumbnails) are available.
Image resizing is needed for creating website thumbnails and responsive image variants, preparing social media images (Instagram 1080×1080, Twitter 1200×675, Facebook 1200×630), optimizing images for web performance by reducing dimensions, meeting upload size requirements for various platforms, creating app icon sets at multiple resolutions, generating avatar images at standard sizes, and batch-preparing product images for e-commerce listings.
The tool uses the HTML5 Canvas API for image resizing. The original image is drawn onto a canvas element at the target dimensions using drawImage(). For downscaling, the browser applies bilinear interpolation by default for smooth results. For high-quality scaling, imageSmoothingQuality is set to "high" and the browser applies its best interpolation algorithm during the single-step drawImage() call. Output uses canvas.toBlob() with configurable quality (0-1) for JPEG and WebP.
Upload an image (drag and drop or click to browse), set the desired width and height, and click Resize. Lock the aspect ratio to prevent distortion. Download the resized image as PNG or JPEG.
Scaling images down generally preserves quality well. Scaling up (enlarging) can cause blurriness because new pixels must be interpolated. For best results, start with a high-resolution original and scale down to your target size.
When aspect ratio is locked, changing the width automatically adjusts the height proportionally (and vice versa), preventing the image from being stretched or squashed.
Crop images with pixel-perfect precision. Set custom crop areas, use aspect ratio presets, and download cropped results.
Convert images to WebP format for smaller file sizes and faster web loading.
Rotate and flip images with ease. 90°/180° rotations, custom angles, and horizontal/vertical flipping.
Transform, format, generate, and encode data instantly. Private, fast, and always free.
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