How to resize a PNG image
Resizing a PNG changes how many pixels wide and tall the image is, which is different from compressing it. Because PNG is lossless, shrinking it re-samples the pixels but never introduces the blocky artifacts you get from a lossy format — text and sharp edges stay clean, and transparency is preserved. That makes PNG the safest format to resize logos, icons, screenshots, and UI graphics down to an exact pixel size.
This PNG resizer runs entirely in your browser. Drop in a PNG file, enter a new width or height in pixels or a percentage, and download the resized version — no uploads, no sign-up, and no watermark.
How to use it
1. Drop your PNG image onto the drop zone or click to browse.
2. Enter a target width or height in pixels, or resize by a percentage.
3. Keep aspect ratio locked so the image scales proportionally instead of stretching.
4. Download the resized PNG image. Everything is processed on your device.
Choosing the right dimensions
Enter the target width or height in pixels, or resize by a percentage if you just want the image smaller by a fixed ratio. Keep aspect ratio locked so a 1600×1200 logo becomes 800×600 rather than a stretched 800×1200. Downscaling a PNG keeps it crisp; enlarging one past its original size cannot invent new detail and will look soft, so export your source graphics at the largest size you need.
Common web targets are 1920px wide for large hero images, 1080px for social media posts, and 600–800px for images placed inside articles or email. When in doubt, size to the widest space the image will fill and let the layout scale it down.
Common mistakes to avoid
A few habits quietly ruin resized images:
- Enlarging a small image and expecting it to look sharp — upscaling cannot add detail, so it always looks soft. - Unlocking aspect ratio and typing mismatched width and height, which stretches or squashes the picture. - Resizing repeatedly from already-resized copies instead of going back to the largest original each time. - Confusing dimensions with file size — if you need a specific number of kilobytes, resize first, then compress.
Frequently asked questions
Does resizing a PNG lose quality?
Making a PNG smaller does not add compression artifacts because PNG is lossless — the result stays crisp with transparency intact. You do lose fine detail simply because there are fewer pixels to hold it, and enlarging a PNG beyond its original size looks soft since no new detail can be created.
Will resizing keep my PNG's transparency?
Yes. The transparent (alpha) areas of a PNG are preserved through the resize, so a logo or icon with a see-through background stays transparent at the new dimensions. Transparency is only lost if you separately convert the PNG to a format without an alpha channel, such as JPG.
Does resizing change the aspect ratio?
Only if you want it to. With aspect ratio locked, changing the width updates the height automatically so the image scales proportionally and never looks stretched. Unlock it only when you deliberately need to force an image into different proportions.
Are my images uploaded to a server?
No. All resizing happens locally in your browser using the canvas engine — your PNG images never leave your device, so it is safe to resize private or work images.
Is this tool free?
Yes — resizing PNG images here is completely free, with no watermark, no account, and no limit on how many you process.