To resize a PNG online, add your images, enter a width and height in pixels (or a percentage) and press Apply. Free, private, and your images are never uploaded.
Add your images, adjust the settings with a live preview and download the result. Everything runs in your browser, so your images are never uploaded.
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To resize a PNG online, add your images, enter a width and height in pixels (or a percentage) and press Apply. Transparency is kept, and with Padding you can keep the transparent background. Resizing uses a Lanczos filter on premultiplied colours in your browser; nothing is uploaded.
Resize PNG logos, icons and graphics without losing their transparent backgrounds. The resampling treats transparency correctly, so edges stay clean instead of getting dark or light halos. It is a free tool from Websolindia, a New Delhi website design and SEO company that builds fast, image-optimised websites.
Unlike most online image tools, this one does not upload your pictures. Your browser decodes each image, applies the edit with our own pixel code and shows a live preview before you download. You can process up to 30 images at a time and download them one by one or together as a ZIP.
Once your image is ready, you may also want the JPG Image Resizer Online, the PNG Image Compressor Online or the Circle Image Cropper Online. All of our free image tools are listed in the Image Resizer & Cropper Tools collection and the Websolindia Image Converter.
Use this table to choose settings with confidence.
| Use | Typical size | Tip |
|---|---|---|
| Website favicon (PNG) | 32, 48 or 192 px | Make it square |
| Apple touch icon | 180 × 180 px | Square, no transparency recommended |
| Android / PWA icon | 192 and 512 px | Square, keep margins |
| Logo in a header | 200–400 px wide | Export 2× for sharper screens |
| Open Graph image | 1200 × 630 px | Use Fill mode |
This is exactly what happens to your image, with no hidden step. You can check that nothing is uploaded by watching your browser's network tab while you use the tool.
| Step | What happens |
|---|---|
| 1. Read and decode | The PNG is decoded to RGBA pixels including transparency. |
| 2. Work out the target size | From your pixels or percentage; an empty side follows the original proportions. |
| 3. Apply the fit mode | Fit, Exact, Fill or Padding, as in the JPG resizer; Padding can be transparent or a colour. |
| 4. Resample with Lanczos-3 | Colours are weighted by their opacity (premultiplied alpha) before averaging, so transparent pixels do not bleed into edges. |
| 5. Encode as PNG | The result is a standard, lossless PNG. |
| Setting | Default | Choices | What it does |
|---|---|---|---|
| Resize by | Pixels (width and height) | Pixels (width and height); Percentage | |
| Width (px) | 1200 | 1 to 20000 | |
| Height (px) | Empty | 1 to 20000 | Leave one empty to keep the proportions automatically. |
| Scale (%) | 50 | 1 to 400 | |
| When width and height are both set | Fit inside the size, keep proportions | Fit inside the size, keep proportions; Exact size (may stretch); Fill the size and crop the overflow; Fit inside and add padding | |
| Never enlarge small images | Off | On / Off | |
| Padding colour | #ffffff | Any colour | |
| Transparent padding | On | On / Off |
| What | Formula | Notes |
|---|---|---|
| Premultiplied average | Σ(colour × α × weight) ÷ Σ(α × weight) | Prevents halos at transparent edges. |
| Proportional height | width × (original height ÷ original width) | Used when only one side is given. |
| Component | Role | Where it runs |
|---|---|---|
| Lanczos-3 resampling (our own code) | Resizes with premultiplied alpha | Your browser |
| Browser PNG encoder | Saves the PNG | Your browser |
| Topic | Detail |
|---|---|
| Images per batch | Up to 30 at a time |
| File size | Up to 150 MB per image |
| Image dimensions | Up to about 120 megapixels; larger images are declined to protect your browser |
| Privacy | Images are processed in your browser and never uploaded |
| Browsers | Current Chrome, Edge, Firefox and Safari (WebAssembly is needed for AVIF, HEIC, TIFF and AI tools) |
| Metadata | EXIF and location data are not copied into new files |
Yes. Transparency is preserved, and edges are resampled with premultiplied alpha so they stay clean.
Choose Pixels, set the same width and height, and pick Padding for the whole image on a transparent square, or Fill to crop it. The Square Image Cropper Online lets you choose the crop area.
Yes, but it cannot gain detail. Use 'Never enlarge' if you want to avoid soft results.
Larger pixel dimensions mean more data. Reduce the size or compress it with the PNG Image Compressor Online.
Yes, any image works, but the output is PNG. For smaller photo files use the JPG Image Resizer Online.
Images up to about 120 megapixels are processed; larger requests are declined to protect your browser.
Yes. It is free, needs no sign-up, adds no watermark and has no daily limit. It is provided by Websolindia.
No. Your images are read and processed inside your browser on your own device. They are never sent to Websolindia or anyone else, which is why the tool is safe for private photos.
No. New files are created from the pixels, so camera details, GPS location and other embedded metadata are not copied. Keep your originals if you need that information.
Up to 30 images per batch and 150 MB per image. Images above roughly 120 megapixels are declined with a clear message rather than freezing your browser.
Current versions of Chrome, Edge, Firefox and Safari on computers, phones and tablets. Large images and AI or AVIF features run faster on a computer.
Websolindia built it. We are a New Delhi website design, SEO and digital marketing company serving businesses since 2014. See our website designing and SEO services.
More in this collection: Image Resizer & Cropper Tools
