Image Resizer

What is the Image Resizer?

The Image Resizer changes the pixel dimensions of a photo or graphic in your browser. Set an exact width and height, or scale by percentage, keep the aspect ratio locked so nothing is squashed, choose the output format and quality, and download. It is the fastest way to turn a 12-megapixel camera shot into something a web page, a form upload or an email can handle, without installing software or sending the image to a server.

How to use it

1. Drop an image on the upload area or click to select one. JPG, PNG, WebP, GIF and BMP are accepted.
2. Enter a new width or height. With the ratio lock on, the other dimension fills in automatically. Or switch to Percent and type 50 for half size.
3. Pick the output format: keep the original, or choose JPEG for photos, PNG for graphics with transparency, WebP for the smallest files.
4. Adjust quality if you chose JPEG or WebP; 85 to 90 is a safe default.
5. Preview the result and its file size, then click Download.

Features

• Pixels or percent with aspect-ratio lock, plus one-click presets for common sizes.
• Format switch on export so you can resize and convert in one step.
• Quality control for lossy formats with a live size readout.
• High-quality downscaling using the browser’s image smoothing, which avoids the jagged edges of naive resampling.
• Private by design. Nothing is uploaded; it works offline once loaded.

What size do you actually need?

A blog featured image is usually shown at 700 to 1,200 pixels wide, so exporting at 1,600 to 2,400 pixels covers high-density screens with room to spare. Social platforms have their own expectations: 1200 by 630 for link previews, 1080 by 1080 or 1080 by 1350 for Instagram, 1280 by 720 for a YouTube thumbnail. Profile pictures rarely need more than 800 pixels square. Anything larger than the display size is wasted bytes that slow the page down. The complete table by platform, and the difference between resizing and cropping, is in image sizes for every platform and how to resize without losing quality.

Resizing without losing quality

• Always resize down from the original, never up from an already-shrunk copy. Enlarging cannot invent detail.
• Resize first, then compress. Reducing dimensions removes far more weight than lowering quality.
• For logos and screenshots, export PNG or WebP to keep edges crisp; JPEG blurs text.
• If you need several sizes of the same image, the Bulk Image Resizer processes a whole batch with one setting.
• Finish with the Image Compressor if the file is still heavier than you want.

Frequently asked questions

Does resizing reduce image quality?

Shrinking discards pixels, which is expected and invisible at the new size. Enlarging spreads the same detail over more pixels and looks soft; avoid it where you can.

Can I resize without keeping the aspect ratio?

Yes, unlock the ratio and set both dimensions. The image will be stretched to fit, so use it only when that is what you want; otherwise crop instead.

Is EXIF data kept?

No. Re-encoding removes camera and location metadata, which is usually what you want before sharing.

What is the maximum image size?

There is no fixed limit, but very large images (over about 8,000 pixels on a side) can exhaust memory on phones.

Is the image uploaded?

No. All resizing happens on your device.