Image Resizer — Resize to Exact Pixels Instantly [2026]
Upload any image → get exact pixel dimensions in seconds. Resize by pixels or percentage with aspect ratio lock and live preview. 100% browser-based — no signup, no server upload.
Drop an image here or click to browse
Supports JPEG, PNG, WebP, GIF
What is Image Resizer?
How to Use Image Resizer
Drag and drop an image or click to browse files. Enter the desired width and height in pixels, or use the percentage slider to scale by a ratio. Toggle "Maintain Aspect Ratio" to keep proportions locked. The preview updates in real time so you can compare original and resized versions side by side. When satisfied, click "Download Resized Image" to save the result.
How Image Resizer Works
Common Use Cases
- Resize product images for e-commerce listings
- Prepare images for social media profile pictures and banners
- Shrink large photos before attaching them to emails
- Create thumbnail images for blog posts and websites
- Match exact pixel requirements for online form uploads
Frequently Asked Questions
Does this tool upload my images to a server?▼
No. All image processing happens entirely in your browser using the HTML5 Canvas API. Your images never leave your device.
What image formats are supported?▼
You can resize JPEG, PNG, WebP, GIF, and BMP images. The output format matches your input format.
Will resizing reduce image quality?▼
Enlarging an image beyond its original size can reduce clarity because new pixels must be interpolated. Downscaling generally preserves quality well. For best results, start with the highest resolution source image available.
Is there a maximum file size?▼
There is no hard limit, but very large images (over 50 MB) may be slow to process depending on your device and browser.
Can I resize multiple images at once?▼
Currently, the tool processes one image at a time. Upload each image separately for resizing.