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Precisely crop and resize images using HTML5 canvas without uploading. Lock aspect ratios, define custom dimensions, and preview exact output sizes instantly.
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Add this fast, responsive, browser-based calculator directly to your blog, university portal, or company site. No API key required. Check the tool’s assumptions and limitations before sharing results.
Image & Media
Precisely crop and resize images using HTML5 canvas without uploading. Lock aspect ratios, define custom dimensions, and preview exact output sizes instantly.
Upload an image and specify your target width and height (or a percentage scale). The tool resizes the image while giving you control over aspect ratio locking.
Resize images to specific pixel dimensions or percentages natively. Yuitility keeps the workflow fast and focused, so you can complete the job without creating an account.
Frequently asked questions about calculation formulas, privacy, and usage.
Generally yes, unless you specifically want to stretch/distort the image - locking aspect ratio prevents unwanted warping.
Often yes, since fewer pixels typically means a smaller file, though for maximum size reduction pairing resize with compression is more effective.
These vary by platform and post type (feed post vs story vs banner) - worth checking current platform specs since they change occasionally, rather than assuming universal dimensions.
No. Resizing is performed 100% locally using HTML5 canvas elements.
Tools that pair with the image resizer in the same task.
Fit an image to a 20, 50, 100 or custom KB limit, or adjust quality locally. Measure the output before downloading.
Open the image compressorInstantly crop images to exact sizes for Instagram, X, LinkedIn, etc.
Open the social media resizerConvert images to WebP, PNG or JPEG locally.
Open the image format converterRemove image backgrounds in your browser with a local AI model.
Open the ai background removerSee every tool in Image & Media, or browse all Yuitility tools.
