Click to upload or drag & drop an image
Supports JPG, PNG, WebP — Max 20MB
📐 Preset Sizes
Resize images to exact dimensions or choose from preset sizes for social media, web, and print. Maintain aspect ratio with lock. No upload, instant processing.
Every platform has different optimal image dimensions. Instagram posts need 1080×1080, Stories require 1080×1920, Twitter posts work best at 1600×900, LinkedIn at 1200×627, and Facebook at 1200×630. Our presets handle all major platforms — no memorizing dimensions. Properly sized images prevent awkward cropping and pixelation.
Large images are the #1 cause of slow websites. Resize images to their actual display dimensions before uploading to your site. A 4000px-wide photo displayed in a 800px container wastes bandwidth and slows page load times. Use WebP format for an additional 25-35% size reduction compared to PNG/JPG with similar quality. Google's Core Web Vitals penalize sites with unoptimized images.
Marketplaces like Amazon, Shopify, and Etsy require specific image dimensions. Amazon recommends at least 1000×1000 pixels for zoom functionality. Shopify themes often use square product images (2048×2048 recommended). Resize and standardize all product photos to consistent dimensions for a professional store appearance.
Email clients have strict width limits — most display at 600px wide. Images wider than 600px get scaled down or cause layout breaks. Resize email images to 600px or 1200px (for retina displays) before embedding. Smaller images also reduce email load time, improving deliverability and reader engagement.
Open Graph images (the preview image when sharing links on social media) should be exactly 1200×630 pixels. This 1.91:1 ratio works across Facebook, Twitter/X, LinkedIn, and Slack. Use our OG Image preset to ensure your content previews look professional on every platform. Optimize file size under 300KB for fast loading in feeds.
Large images bloat PDF, Word, and PowerPoint files. Resize images to appropriate dimensions before inserting — 1920px wide is usually sufficient for full-slide images. For document-embedded images, 800-1200px wide balances quality and file size. Resize before inserting to avoid the "file too large to email" problem.
Click the upload zone or drag and drop an image. Supported formats: JPG, PNG, WebP, BMP. The tool displays your original dimensions and file size immediately. This gives you a baseline to understand how much you're resizing. 100% local processing — no upload to any server.
Pick a preset (Instagram, Story, YouTube Thumbnail, etc.) or enter custom width/height values manually. The presets are optimized for their respective platforms. For custom dimensions, think about where the image will be displayed: web pages typically need 800-2000px, social media 1080px, and thumbnails 150-400px.
Locked (🔒): Changing one dimension automatically adjusts the other to maintain proportions — prevents stretching. Unlocked (🔓): Set width and height independently — useful for forcing exact dimensions, but may distort the image. For most uses, keep the aspect ratio locked unless you specifically need non-proportional dimensions.
JPG: Best for photos and complex images — smaller file size, no transparency. PNG: Best for graphics, logos, and images needing transparency — larger file size. WebP: Modern format combining JPG compression with PNG transparency support — 25-35% smaller than equivalent JPG/PNG. WebP is supported by all modern browsers and is the recommended choice for web use.
Click Resize to process the image instantly in your browser. The preview shows exactly what you'll get. Check the new dimensions and estimated file size before downloading. If the result isn't right, adjust your settings and resize again — there's no limit on attempts. Download when satisfied.