Image Resizer Online
Resize images to exact dimensions — single or batch
Como usar Redimensionador de Imagens
- 1
Upload one or more images
Drop a single image or multiple files. Batch mode activates automatically when 2 or more files are loaded.
- 2
Set dimensions
Enter the target width and height, or lock the aspect ratio and set one dimension — all batch files use the same settings.
- 3
Resize
Click 'Resize Image' for a single file, or 'Resize All' in batch mode to process every image sequentially.
- 4
Download
Download files individually, or use 'Download All as ZIP' to get all resized images in one archive.
Perguntas frequentes
Is my data safe?
Can I maintain the aspect ratio?
What is the maximum image size?
Can I resize images to larger dimensions?
What output format is used?
Can I resize multiple images at once?
Saiba mais
O que é Image Resizer?
Resize images to exact pixel dimensions instantly. Maintain aspect ratio or set custom width and height for precise control. Ideal for social media profile pictures, website thumbnails, email headers, and print preparation. Supports JPEG, PNG, and WebP formats. All processing happens in your browser — your images are never uploaded to any server. No software installation, no account, no watermarks. Drop multiple images at once to resize them all to the same dimensions in one click and download as a ZIP.
Por que usar Image Resizer?
- Pixel-perfect control — set exact width and height in pixels for precise sizing requirements.
- Aspect ratio lock — change one dimension and the other adjusts automatically to prevent distortion.
- 100% private — your images stay on your device. No uploads, no server processing, no data collection.
- Works with any image size — no artificial file size limits or resolution caps.
- Instant results — resizing happens in milliseconds using the Canvas API.
- Batch resize — drop 2 or more images to resize them all to the same dimensions at once. Download individually or as a ZIP archive.
Casos de uso de Image Resizer
Social media profiles
Resize photos to exact dimensions required by platforms — 400x400 for Twitter, 170x170 for Facebook, 110x110 for Instagram.
Website thumbnails
Create consistently sized thumbnails for product galleries, blog posts, or team member photos.
Email headers
Resize banner images to fit email template widths (typically 600px) for reliable rendering across email clients.
Print preparation
Scale images to specific dimensions for business cards, flyers, or photo prints.
Dicas e boas práticas
- 💡Always start with the largest version of your image. Scaling up (enlarging) reduces quality, while scaling down preserves it.
- 💡Lock the aspect ratio when resizing to prevent stretching or squishing your image.
- 💡For web use, resize to the exact display size — serving a 4000px image when you only need 800px wastes bandwidth.
- 💡After resizing, consider compressing the image with the Image Compressor for even smaller file sizes.
Como se compara
Desktop apps like Photoshop and GIMP offer advanced resizing with algorithms like Lanczos and bicubic interpolation, plus batch processing. TinyTool's resizer uses the browser's Canvas API, which provides good-quality bilinear interpolation suitable for most use cases. The advantage is instant access — no software to install, no learning curve, and complete privacy since nothing leaves your device.