Image Resizer Tool
Image resizer and photo converter. Resize images online with quality, multiple formats, and advanced optimization features for your photo editing needs.
Upload Your Image
Drag & drop or click to select your image (Max 20MB)
Supports JPG, PNG, GIF, WEBP formats
Professional Image Resizer Tool
Advanced image resizer with perfect quality control. Resize photos online, convert image dimensions, and maintain optimal quality for web, print, and social media use.
Smart Image Resize
Resize images with intelligent algorithms that preserve quality and detail. Our image resizer automatically optimizes photos while maintaining perfect clarity and sharpness for any dimension requirements.
Image Compression
Compress and optimize your images for web use while maintaining visual quality. Reduce file sizes significantly for faster loading times, email attachments, and storage savings without compromising image clarity.
Real-time Preview
Preview your resized images instantly before downloading. See exactly how your photos will look with different dimensions, ensuring perfect results every time with our image size converter.
High Quality Output
Maintain original image quality while resizing photos. Our advanced compression algorithms ensure your resized images retain maximum detail and clarity without unwanted artifacts or quality loss.
Multiple Format Support
Resize and convert between various image formats including JPG, PNG, WebP, and GIF. Perfect for web optimization, social media posting, email attachments, and professional printing requirements.
Flexible Sizing Options
Choose from pixels, inches, centimeters, or millimeters for precise image dimensions. Set custom DPI values, maintain aspect ratios, and use percentage-based scaling for perfect photo sizing control.
Image Resize Questions
Everything you need to know about resizing images online with perfect quality and optimal results.
1. Upload your image by clicking the upload area or dragging and dropping your photo (maximum 20MB supported). 2. Choose your preferred dimensions using pixels, inches, or centimeters, and adjust settings like quality, format, and aspect ratio. 3. Preview your resized image in real-time, then download the final result. Our image resizer maintains high quality throughout the entire process.
Our advanced image resizer uses smart algorithms to maintain maximum quality during the resize process. When enlarging images, we use sophisticated upscaling techniques, and when reducing size, we apply optimal compression to preserve detail. The quality slider lets you control the balance between file size and image clarity.
ResizeBox supports all major image formats including JPG/JPEG, PNG, GIF, WebP, BMP, and TIFF files up to 20MB. You can resize images in their original format or convert to a different format during the resize process. PNG is best for images with transparency, while JPG works great for photos.
Yes! ResizeBox is completely free to use with no hidden charges, watermarks, or limitations. Resize unlimited images, use all features including format conversion, compression tools, and quality controls. No registration required and no premium subscriptions needed.
Absolutely! Your images are processed entirely in your browser and never uploaded to our servers. All image resizing happens locally on your device, ensuring complete privacy and security. Your photos remain on your computer throughout the entire process.
Use our built-in compression feature by adjusting the quality slider when resizing your image. Lower quality settings reduce file size while higher settings maintain better image clarity. You can also convert to WebP format for optimal compression with minimal quality loss, perfect for web use.
You can resize images up to 20MB in file size with no restrictions on pixel dimensions. Our image resizer handles everything from small thumbnails to high-resolution photos and large graphics. For optimal performance with very large files, processing may take a few extra seconds.
Use the "Lock Aspect Ratio" feature to automatically maintain your image proportions when resizing. When enabled, changing the width will automatically adjust the height (and vice versa) to keep your image looking natural without distortion or stretching.
No registration required! Use ResizeBox immediately without creating an account, providing email addresses, or signing up for anything. Simply visit the website, upload your images, resize them, and download the results. Quick, easy, and hassle-free.
Consider your intended use: social media posts typically need square formats (1080x1080), website images often work well at 1200px wide, email attachments should be under 1MB, and print photos need high DPI (300 DPI). Our image resizer provides presets and custom sizing options for all common requirements.