Resize PNG Images Online
Need to resize a PNG image while keeping its transparent background intact? Our PNG resizer preserves the alpha channel throughout the resizing process, so your logos, icons, and graphics with transparency come out perfectly resized.
How to Resize PNG
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Upload PNG image
Select one or more PNG files from your device.
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Enter target dimensions
Specify the exact width and height in pixels, or enter a scale percentage. Use the aspect ratio lock to avoid distortion.
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Download resized PNG
Preview and download your resized PNG, with transparency fully preserved.
Features
- Preserves PNG transparency (alpha channel) during resize
- Exact pixel dimensions or percentage scale
- Aspect ratio lock
- High-quality Lanczos resampling
- Batch resize multiple PNGs
- Fully browser-based — private and secure
Why Resize PNG Images?
PNG is the format of choice for graphics, logos, icons, and UI elements — because it supports transparency. Resizing these assets to the right dimensions is essential for web development (favicon sizes, icon sets, retina/HiDPI variations) and design workflows (exporting at @1x, @2x, @3x for different device densities).
Supported Formats
This tool accepts PNG files up to 20 MB per file. Process up to 20 images per batch.
Frequently Asked Questions
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Yes. Our PNG resizer uses an alpha-channel-aware canvas rendering pipeline, which keeps transparent areas transparent throughout the resize operation. No white or colored backgrounds are added.
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For iOS app icons, the base size is 1024×1024px (App Store). Android requires adaptive icons at 108dp with a 72dp safe zone. Web favicons typically use 16×16, 32×32, and 180×180px (Apple Touch Icon) variants.