Image Resize
Resize images to any dimension with aspect ratio lock and percentage scaling. 100% browser-based, no upload required.
How do I resize an image online?
Upload your image, set the desired width and height in pixels or percentage, then click resize to download the result. You can also use social media presets for common sizes.
Does the tool maintain the aspect ratio?
Yes, the aspect ratio is locked by default. When you change one dimension, the other adjusts automatically to keep proportions. Click the lock icon to unlock and set independent dimensions.
What social media image sizes are supported?
The tool includes presets for Instagram (1080x1080, 1080x1350, 1080x1920), Facebook (1200x630), Twitter/X (1500x500, 1600x900), LinkedIn (1200x627), and YouTube thumbnails (1280x720).
What image formats can I output?
You can export in the original format, PNG, JPEG, or WebP. For JPEG and WebP, you can also adjust the compression quality to balance file size and image quality.
Is my image uploaded to a server?
No. All image processing happens locally in your browser using the HTML5 Canvas API. Your images never leave your device, ensuring complete privacy.
Can I resize images by percentage?
Yes, you can scale images by percentage instead of exact pixel dimensions. Enter a percentage value like 50% to halve the size, or 200% to double it.
What is the maximum image size supported?
The maximum size depends on your device's available memory. Most modern browsers can handle images up to several thousand pixels without issues.
Can I resize multiple images at once?
Currently the tool processes one image at a time for optimal performance and simplicity. You can quickly resize multiple images by repeating the process.
Does resizing affect image quality?
Downscaling generally maintains good quality. Upscaling may result in some softness since new pixels are interpolated. Using the original format or PNG output preserves the most detail.
Is this tool free to use?
Yes, the image resize tool is completely free with no registration required. There are no watermarks, no file limits, and no usage restrictions.
How does browser-based image resizing work?
The tool uses the HTML5 Canvas API to decode, resize, and re-encode images directly in your browser. No server-side processing is involved, making it fast and private.
Can I set custom dimensions in pixels?
Yes, you can enter any width and height in pixels. The tool supports exact pixel input for precise control over the output dimensions.
How to Use Image Resize
Resize images to exact pixel dimensions or scale them by percentage, with an aspect ratio lock to prevent distortion. Everything runs locally in your browser — no upload required.
- Load the image you want to resize from your device.
- Enter the new width or height in pixels, or switch to percentage scaling to shrink or enlarge relative to the original.
- Keep the aspect ratio locked while changing one side, so the image scales proportionally without stretching.
- Keep the Original Format or convert to PNG, JPEG, WebP, or GIF, then download the resized file.
Downscaling usually keeps images sharp, but enlarging far beyond the original size will soften edges and blur fine detail.
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