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Every platform wants a different size: 1080×1080 for an Instagram post, 1080×1920 for a story, 600×600 for many passport portals, 1920 px wide for a website banner. The PDFWix image resizer changes the pixel dimensions of JPG, PNG and WebP photos in your browser with high-quality smoothing. Keep the aspect ratio to fit inside a box without stretching, or switch it off to force exact dimensions.
Every platform wants a different size: 1080×1080 for an Instagram post, 1080×1920 for a story, 600×600 for many passport portals, 1920 px wide for a website banner. The PDFWix image resizer changes the pixel dimensions of JPG, PNG and WebP photos in your browser with high-quality smoothing. Keep the aspect ratio to fit inside a box without stretching, or switch it off to force exact dimensions.
| Mode | Stretches the photo | Best for |
|---|---|---|
| Pixels + keep aspect ratio | ✗ No | Websites, email, general sharing |
| Pixels, ratio unlocked | Possibly | Forms that demand exact width × height |
| Percentage | ✗ No | Shrinking a batch evenly (e.g. to 50%) |
| Crop, then resize | ✗ No | Exact dimensions without distortion — use Crop Image first |
Which resize mode to pick for common jobs.
To resize an image free: open PDFWix Resize Image, add your photos, type a width and/or height in pixels (or pick a preset such as 1080×1080), keep "Keep aspect ratio" on to avoid stretching, and click Resize images. The resized files download immediately.
PDFWix Resize Image redraws each photo onto an HTML canvas of the requested dimensions with imageSmoothingQuality set to "high", then re-encodes it in its original format (JPG and WebP at 92% quality, PNG losslessly). With aspect ratio locked, the image is scaled by the smaller of the width and height ratios so it fits inside the requested box without distortion. Images are processed locally and never uploaded.
Resizing changes how many pixels an image has — its width and height. Compressing changes how efficiently those pixels are stored. A 4000×3000 photo resized to 1200×900 has about 11 times fewer pixels, so the file is dramatically smaller even at the same quality, and it displays faster everywhere. Making an image larger than its original cannot add real detail; the browser can only interpolate new pixels between existing ones, which softens the result. For sharp output, resize down rather than up. If an upload form limits both pixel size and file size, resize here first and then run Compress Image with a KB target.
Presets: Instagram · Story · HD · Passport · Processing: 100% in your browser · Batch: Unlimited images
To hit a file-size limit too, follow up with Compress Image. To put resized photos into one document, use JPG to PDF.
Keep the aspect ratio on and resize down from a larger original. PDFWix uses high-quality resampling and saves JPG/WebP at 92% and PNG losslessly, so the result looks as sharp as the original at its new size.
Resize to a small size first (for example 400 px wide) and then use Compress Image with a 20 KB target. Pixel size and file size are separate limits.
Yes. Every photo you add is resized with the same settings.
Not with Keep aspect ratio switched on — the photo is scaled to fit inside your width and height.
No. Resizing happens in your browser.
Yes, free with no watermark.