Resize images online for free. Change dimensions easily and download instantly — all in your browser.
Upload an image, then enter the target width and height in pixels. Keep aspect ratio enabled when you want the tool to preserve the original proportions. If you are preparing web graphics, product shots, or social media assets, pick the output format and quality that match the final destination before downloading.
Use the preview to check whether the resized image still looks crisp enough for its intended use. If you only need a smaller version, reduce the dimensions first and then adjust format or quality if needed.
Resize blog images, thumbnails, avatars, email graphics, app screenshots, and product photos to a consistent size. Teams also use image resizing to fit CMS upload limits, speed up page loads, and create matching assets for social posts or ad creatives.
It is especially useful when a single source image needs to be reused in several places. One copy can become a banner, another can become a square preview, and a third can be optimized for a mobile layout without re-editing the original design file.
Resize before compressing if file size matters, because reducing dimensions first usually gives the biggest savings. Keep aspect ratio locked unless you intentionally want a stretched or cropped result, and use JPEG or WebP for photos while PNG is better for transparent graphics and sharp logos.
If the image looks soft after resizing, try a smaller target size or a higher quality setting. For social platforms, use dimensions that match their recommended ratios so the upload does not get cropped in unexpected ways.
Upload an image — Click the upload area or drag and drop an image from your computer.
Set dimensions — Enter your desired width and height. The aspect ratio lock keeps proportions intact when you change one value.
Choose format and quality — Select JPEG, PNG, or WebP as the output format. Adjust the quality slider for lossy formats.
Download — Click the Download button to save your resized image.
The tool draws your image onto a hidden HTML5 Canvas at the specified dimensions, then exports it as a new image file in your chosen format and quality. All processing is done locally in your browser — nothing is uploaded to a server.
WebP offers the best compression-to-quality ratio for web use. JPEG is ideal for photographs, while PNG is best for images that need transparency or sharp edges like logos and icons.
Resizing an image smaller reduces pixel data but maintains perceived quality. Enlarging an image can cause blurriness because the browser must interpolate missing pixel data.
Locking the aspect ratio ensures that when you change the width, the height updates proportionally (and vice versa). This prevents the image from appearing stretched or squashed.
Yes. All processing happens entirely in your browser using JavaScript. Your images never leave your device and are not sent to any server.
Start with a source image that is larger than the final target size, then resize down instead of up whenever possible. Keep aspect ratio locked so the image does not stretch, and choose a format that matches the content: JPEG or WebP for photos, PNG for logos or images with transparency.
Resize first, then compress. Reducing the dimensions lowers the total number of pixels, which usually creates a much smaller file before you even apply quality compression. That gives you better results and helps preserve visible detail.
No. All our tools are free to use and work directly in your browser without registration or sign-in. Just open the page and start using the tool.
Yes. The tool is fully responsive and works on any modern browser on iPhone, iPad, Android phones and tablets. The interface adapts to your screen size automatically.