Resize images online while maintaining quality. Change photo dimensions, reduce file size, or scale up. Supports all popular formats.
Everything you need to know about using our Online Image Resizer
Enter exact width and height in pixels, or use percentage scaling. Choose 'Exact' to stretch to fit, 'Fit Within' to maintain aspect ratio, or 'Fill' to crop and fill dimensions. Preview before downloading.
Making images smaller maintains quality. Enlarging can reduce sharpness, but our smart upscaling uses interpolation to minimize quality loss. For best results when enlarging, start with the highest resolution original.
Yes! Batch resize up to 50 images with the same dimensions. Perfect for creating thumbnails, social media galleries, or standardizing product photos. Download all resized images as a ZIP file.
Popular presets include: Instagram Post (1080x1080), Instagram Story (1080x1920), Facebook Cover (820x312), Twitter Header (1500x500), YouTube Thumbnail (1280x720), and Website Hero (1920x1080).
Yes! Scale by percentage: 50% (half size), 25% (quarter size), 200% (double size), or any custom percentage. Great for quick adjustments without calculating exact pixel dimensions.
Resize images online for free while maintaining perfect quality. Our image resizer supports exact pixel dimensions, percentage scaling, and preset sizes for social media, websites, and print. Reduce file size for faster loading or enlarge small images with smart interpolation. Ideal for web developers, bloggers, e-commerce sellers, and social media managers who need consistent image dimensions.
Upload any JPG, PNG, or WebP image. Enter exact width and height in pixels, or choose a percentage scale. Select from 20+ preset sizes including Instagram, Facebook, Twitter, and HD display resolutions. Choose resize method: nearest neighbor for pixel art, bilinear for photos, or Lanczos for high-quality enlargement. Download in your preferred format.
Website optimization - resize hero images and thumbnails for fast page loading
Social media - exact dimensions for Instagram (1080px), Twitter (1200x675), Facebook
E-commerce - consistent product image sizes for Amazon, eBay, Etsy listings
Blog posts - featured images and in-content photos at optimal WordPress dimensions
Print preparation - scale images to exact DPI for flyers, posters, and business cards
| Feature | Keynou | Bulk Resize Photos | IrfanView |
|---|---|---|---|
| Price | Free | Free (ads) | Free |
| Preset Sizes | 20+ platforms | 10 presets | None |
| Quality Algorithms | 3 methods | 1 method | 2 methods |
| Batch Resize | Yes (50 images) | No | No |
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Convert between different file formats efficiently without losing quality.
Resize multiple images with full client-side processing
Drag & drop images or click to browse
Supports JPEG, PNG, WEBP (Max 10MB each)
Privacy Focused
All processing happens in your browser
Multiple Images
Upload and switch between multiple images
Format Options
WEBP, JPEG, PNG supported