Image Resizer

“Photo must be 600 × 600 pixels.” “Maximum width 1920 px.” “File too large.” Resizing is what most upload forms quietly demand, and it's the single most effective way to shrink an image — halving the width and height cuts the pixel count, and usually the file size, by about three quarters.

This resizer changes image dimensions in your browser. Set an exact width, an exact height, both, a bounding box to fit inside, or a percentage — for one image or 50 at once. Aspect ratio is kept automatically unless you deliberately ask for exact dimensions.

Downscaling uses a stepped, high-quality resampling pass instead of a single crude shrink, so text and fine lines stay readable in small versions. By default the tool also refuses to enlarge images that are already smaller than your target, because upscaling adds pixels without adding detail.

A quick way to think about sizes: a modern phone photo is around 4000 × 3000 pixels, far more than any screen shows. A laptop display is roughly 1500–2000 pixels wide, a blog column 700–900, and a WhatsApp preview a few hundred. Matching the pixels to where the image will be seen is what makes pages load fast and uploads succeed.

How It Works

1. Add your images — JPG, PNG, WebP, GIF, BMP, HEIC, TIFF or SVG, up to 50 at a time.
2. Choose how to resize — by width, by height, exact width × height, fit inside a box (for example 1080 × 1080 for social media), or a percentage. Pick the output format and quality.
3. Resample and save — large reductions are done in halving steps with high-quality smoothing, then encoded. File names include the new dimensions, and each result shows old → new size.

Compatibility & Support

Supported Input → Output Formats

• Input: JPG, PNG, WebP, GIF, BMP, TIFF, HEIC, SVG, AVIF
• Output: same format as the original, or JPG, PNG or WebP
• Modes: width, height, exact size, fit-in-box, percentage (5–200%)

Unsupported Formats

Animated GIFs are resized as a single frame. RAW camera files and PSDs cannot be opened by a browser. Resizing does not remove the background or change the subject's position — use Crop Image to change the framing, since forcing exact width × height on a different shape stretches the picture.

File Size Limits

Up to 50 images per batch and 60 MB per file. Browsers cap a single canvas at roughly 50 megapixels, so extremely large images can fail on phones; the tool reports this clearly instead of producing a blank file. Output is capped at 10,000 pixels per side.

Who Should Use This Tool?

• Students: A student applying for a scholarship resizes a passport photo to the exact 600 × 600 px the portal requires.
• Freelancers & Designers: A freelance blogger resizes 30 travel photos to 1600 px wide before uploading them to WordPress, cutting the post weight by over 80%.
• Office Professionals: An estate agent shrinks property photos from a DSLR to 1920 px so they fit the listing site's upload limit without looking soft.
• Developers: A developer generates 400 px thumbnails of a product catalogue for a quick prototype without setting up an image CDN.

Why This Tool Beats the Alternatives

• Batch resizing is free and needs no account.
• Photos are not uploaded — important for ID photos and personal images.
• Clear old → new dimensions for every file.
• Better downscaling than a single-pass canvas resize.
• Converts format at the same time, saving a second step.

Pro Tips

• For websites, resize to about twice the displayed width (e.g. 1600 px for an 800 px column) to stay sharp on high-density screens.
• Resize first, then compress: fewer pixels do far more for file size than a lower quality setting. Finish with the Image Compressor if needed.
• For passport or ID photos with strict dimensions, crop to the right shape first, then resize with “Exact width × height”.

Add your images above, set the size you need, and download the resized files instantly.