Camly: Free Image Resizer and PDF Editor
Hero Banner Calibrated

Website Hero Image Optimizer

Resize and compress desktop and mobile hero banners to crisp, fast-loading WebP format under 250KB.

100% Client-Side Privacy (Zero Server Upload)

Optimization Settings

Website hero/banner (1920×800)
Universal next-gen format

Performs binary search quantization to hit ≤ 250 KB while preserving crisp visual sharpness.

Core Web Vitals Impact Engine

Optimizing hero & content banners to modern WebP/AVIF drops Largest Contentful Paint (LCP) by up to 1.8 seconds on 4G networks, satisfying Google PageSpeed requirements for top rankings.

Interactive Preview

Drop your website image here

Supports JPG, PNG, WebP, AVIF up to 50MB

100% In-Browser Local Execution

About this Tool

The above-the-fold hero image is almost universally the Largest Contentful Paint (LCP) element on landing pages. If a hero image weighs 2MB to 5MB, mobile visitors experience several seconds of blank screen. Camly resizes hero graphics to 1920×800 or 1920×1080 and quantizes them into WebP/AVIF weighing comfortably under 250KB.

Hero Banner Optimization Applications

Desktop Landing Page Banners
Fit 1920×800 panoramic headers crisply without pixel distortion or excessive payload.
Mobile Hero Splash Banners
Generate vertical 750×1000 mobile-specific hero crops for instant smartphone rendering.
LCP Score Acceleration
Eliminate Google PageSpeed warnings about "Serve images in next-gen formats" and "Properly size images".

Technical Specifications & Compliance

Desktop Dimension1920 × 800 px (2.4:1 Wide)
Mobile Dimension750 × 1000 px (3:4 Vertical)
Target Weight150 KB to 250 KB
Output CodecWebP / AVIF with JPEG fallback
Aspect FitSmart Cover Crop & Contain

Frequently Asked Questions

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