Free image resizer for poster makers
Resize images online for free before making wall posters, printable art, or Rasterbator layouts.
Private image resizer
Free Image Resizer for Printing
Resize photos by pixels or percentage before printing, sharing, or turning them into Rasterbator posters. Everything runs locally in your browser.
This free image resizer runs in your browser. Your image never leaves your device.
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Upload an image to resize
Drop a JPG, PNG, or WebP here. Resize by exact pixels or percentage without uploading anything.
Choose imageOriginal vs resized preview
Upload an image to see the resized preview here.
Resize images for poster printing
Set a cleaner pixel size before printing so your poster source is easier to preview, crop, and process.
Private browser-based resizing
The image resizer uses Canvas in your browser. No account, no upload, and no server storage.
Print-ready image sizing
When to resize an image before printing
Resizing helps when a source image is much larger than needed, too heavy to handle comfortably, or should match a target print workflow. Use exact pixels or percentage scaling, then send the result into Rasterbator for page layout and halftone effects.
Resize for Rasterbator posters
Prepare a source image at a practical pixel size before creating a multi-page poster.
Resize for sharing or upload
Create a smaller JPG or PNG when the original file is too large for common upload limits.
Control output size
Choose JPG quality or PNG output depending on whether you need smaller files or cleaner edges.
How this image resizer works
1
Upload an image
Choose a JPG, PNG, or WebP file. The image opens locally in your browser.
2
Set output dimensions
Enter exact width and height, lock the original aspect ratio, or scale by percentage.
3
Export or continue
Download the resized image, or send it directly into Rasterbator through local browser storage.
Free Image Resizer FAQ
Is this image resizer free?
Yes. The image resizer is free to use, requires no account, and adds no watermark.
Does the image resizer upload my photo?
No. Resizing happens locally with Canvas in your browser. Your image is not sent to Rasterbator servers.
What image formats are supported?
The resizer supports JPG, PNG, and WebP uploads. Export supports PNG and JPG.
What is the difference between resize and upscale?
Resize changes image dimensions. Upscale also enlarges and sharpens the image. Use the resizer for exact pixel control and the upscaler when a photo is too small or soft.