Compress Image for Web

Compressing an image for web means reducing its file size and dimensions to meet web performance standards — specifically Google's Core Web Vitals LCP (Largest Contentful Paint)threshold. Google classifies LCP as “Good” when the largest visible element loads in under 2.5 seconds, which typically requires the image to be under 200 KB on a 4G connection. Our compress image for web tool automatically resizes images to your chosen max width, compresses to under 200 KB, and shows estimated load times and LCP ratings — all processed locally in your browser with no server uploads.

1. 1Upload Your Images: Drag and drop or click to select any image — JPEG, PNG, WebP, GIF, BMP, or TIFF. You can upload multiple images for batch processing. The compress image for web tool accepts any resolution or original file size.
2. 2Configure Web Settings: Choose your output format (WebP recommended, JPEG for compatibility) and max width preset (1920px for hero images, 1280px for blog images, etc.). Images wider than the max width are scaled down proportionally — images smaller are never upscaled. All processing happens locally in your browser — your images never leave your device.
3. 3Review LCP Insights & Download: Each compressed image shows a Good/Needs Improvement/Poor LCP rating, estimated 4G and WiFi load times, final file size, and compression ratio. Download individually or as a ZIP archive.

• Resolution Resize: Images wider than your chosen max width are scaled down proportionally — the most impactful single optimisation for reducing file size and improving LCP scores.
• Format Conversion: WebP output achieves 25–35% smaller files than JPEG at the same visual quality, directly improving LCP scores. JPEG output ensures compatibility with all browsers and CMS platforms.
• Quality Optimisation: The tool sweeps quality levels from 92% down to find the highest quality that keeps the output under 200 KB — the Good LCP threshold for image-heavy pages.
• Metadata Stripping: Canvas re-encoding removes all embedded EXIF metadata, GPS coordinates, and colour profiles — reducing file size and protecting user privacy.

The LCP rating shown for each image is based on Google's Core Web Vitals thresholds. Good LCP (green) means the image is under 200 KB — it will load in under 2.5 seconds on a typical 4G connection. Needs Improvement (amber) means 200–500 KB — acceptable on fast connections but may cause LCP issues on mobile. Poor LCP (red) means over 500 KB — likely to cause LCP failures and negatively impact Google Search rankings. The estimated load times shown are based on a 4G connection speed of approximately 5 Mbps.