About This Tool
Resize Image changes pixel dimensions for one image or a batch, with exact width and height, percentage scaling, aspect-ratio locking, and optional upscaling prevention.
What You Can Do
Exact dimensions
Set target width and height in pixels.
Proportional scaling
Lock aspect ratio or scale from 1–1000 percent.
Upscale guard
Prevent accidental enlargement beyond source dimensions.
How to Use
- 1
Choose a supported Browser-decodable image files source for Resize Image
Choose a supported Browser-decodable image files source for Resize Image.
- 2
Use exact dimensions, proportional scaling, upscale guard as required for this image
Use exact dimensions, proportional scaling, upscale guard as required for this image.
- 3
Inspect the Source format or JPG or PNG or WEBP or ZIP for batches result and compare it with the original image
Inspect the Source format or JPG or PNG or WEBP or ZIP for batches result and compare it with the original image.
- 4
Save or copy the Source format or JPG or PNG or WEBP or ZIP for batches result using the action provided by Resize Image
Save or copy the Source format or JPG or PNG or WEBP or ZIP for batches result using the action provided by Resize Image.
Practical Use Cases
Responsive assets
Prepare smaller website images and thumbnails.
Submission dimensions
Match a portal’s required pixel size.
Privacy and File Processing
Resize Image keeps its Browser-decodable image files input in browser memory while the operation runs. The workflow creates Source format, JPG, PNG, WEBP, or ZIP for batches for local preview or download and does not send the entered values or selected file bytes to the GXA Toolbox application server.
Supported Inputs and Outputs
Input
- Browser-decodable image files
Output
- Source format
- JPG
- PNG
- WEBP
- ZIP for batches
Quality and Fidelity
Canvas resampling creates new pixels. Reducing dimensions discards detail; enlarging cannot recreate missing detail. Keeping PNG can retain transparency, while JPG output cannot.
Limitations and Important Notes
- Extreme dimensions can exceed browser canvas or memory limits.
- Upscaling can appear soft even when permitted.
- Metadata may not be retained after canvas export.
Worked Example
Use a representative source image, apply Resize Image, and compare the result with the original at full size before publishing it.
Helpful Tips
- Keep the untouched source image while evaluating Resize Image.
- Check the Source format or JPG or PNG or WEBP or ZIP for batches result at its intended display size.
Frequently Asked Questions
Does Resize Image overwrite the selected image?
No. Resize Image creates a result or extracted value without overwriting the selected source.
What affects Resize Image results?
Canvas resampling creates new pixels. Reducing dimensions discards detail; enlarging cannot recreate missing detail. Keeping PNG can retain transparency, while JPG output cannot.
Can a very large image fail in Resize Image?
Yes. Resize Image remains subject to browser decoding, canvas, model, and memory limits.