Image Tools
Image Resizer
Set exact image dimensions with a ratio lock and export a resized copy without uploading your image.
Processed locally in your browser. Your files are not uploaded.
Resize Is Not Crop: Choose Deliberately
Resizing scales the whole image and keeps every pixel of content; cropping throws edges away to change the frame. The workflow mistake is cropping to resize — throwing away resolution that a proper scale-down would have kept. When you need an exact canvas (profile pictures, thumbnails), the right sequence is: resize the long edge to fit, then crop the overflow from the center. Aspect ratio locking exists to prevent the classic silent distortion from entering widths and heights independently.
Resize Down, Not Up
Reducing an image keeps it sharp because pixels are averaged together. Enlarging has to invent pixels, so results get soft however good the algorithm. If you need a bigger image, go back to the original source rather than scaling a small copy.
Keep the ratio lock on unless you want to distort the picture. When a layout requires a fixed shape, resize to match one dimension and then crop the other. For web use, export at about twice the displayed width to keep high-density screens crisp, then compress the result.
How Resizing Changes Your Image
- Load an image by drag-and-drop or file picker. The current dimensions are shown automatically.
- Enter a target width or height, or pick a common preset such as 1920×1080, 1280×720, or 1024×1024.
- Use the ratio lock to keep the original aspect ratio — changing one dimension automatically updates the other.
- Download the resized copy with a fresh file name; your original is left untouched.
Example: Fitting a Print Size
Common Questions
Does resizing reduce image quality?
Downscaling keeps perceived sharpness when you re-export at JPEG quality 80% or higher. Upscaling cannot invent detail that was not captured, so enlarging a small photo will look soft.
Is my image uploaded anywhere?
No. The entire resize operation runs in your browser with the Canvas API. Nothing is transmitted to any server.
Which output formats are available?
WebP, JPG, and PNG. Choose PNG when the image contains transparency or text that needs crisp edges.
Related Image Tools
Image Compressor
Reduce image file size in your browser with adjustable quality, format, and a download-ready preview.
Social Media Image Resizer
Resize and crop images to exact dimensions for Instagram, TikTok, YouTube, X, Facebook, LinkedIn, Pinterest, and Twitch locally in your browser.
Image Cropper
Select a crop area with pointer or touch input, choose a ratio, and download the cropped image.