ESEN
Optimiza sin límites.

Compresión de imágenes de clase mundial que se ejecuta 100% en tu navegador. Sin subidas al servidor. Sin pérdida de calidad perceptible.

Sube tu imagen aquí

Arrastra y suelta tu archivo, o haz clic para explorar.
Soporta PNG, JPG, WEBP, AVIF, GIF • Máx. 50MB (GIF: 10MB)

100% Privado
Velocidad Rayo
Calidad Visual

Compress Image Online: Optimize & Reduce Image Size

OptimizeImg is the fastest tool to compress image online and reduce image size without losing quality. Optimize images for web performance instantly in your browser without uploading files to any server.

Compress Images Online

Ideally designed to compress images without losing quality. We support JPG, PNG, WebP and AVIF formats.

Web Optimization

Optimize images for web performance. Improve your Core Web Vitals score by reducing the weight of your assets.

Secure & Private

We are a privacy friendly image compression tool. Your files never leave your device.

How to reduce image file size?

Our image file size reducer uses WebAssembly technology to process photos directly on your computer. Drag and drop your files, choose your settings, and shrink image file size instantly.

Frequently Asked Questions: Compress Image Online

How can I reduce image KB size without losing quality? ▼
To reduce image KB size without visible pixelation, we use intelligent lossy compression. By discarding data that the human eye cannot see, we can shrink file size by up to 80%. For the best results, we recommend:
  • Using WebP for the best balance of quality and size.
  • Setting the quality level between 80-90 for photographs.
  • Using our adaptive quantization to maintain sharp edges.
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Why is OptimizeImg safer than other online compressors? ▼
Unlike traditional tools, your images never leave your computer. OptimizeImg uses WebAssembly (WASM) to run the compression engine directly in your browser. This means 100% privacy—no server uploads, no data retention, and no risk of your personal photos being leaked.
How does image optimization affect my website's SEO? ▼
Google uses PageSpeed Insights and Core Web Vitals as ranking factors. Heavy images are the #1 cause of slow Largest Contentful Paint (LCP). By optimizing your images for web, you improve loading times, reduce bounce rates, and help your site rank higher in search engine results.

Why compress and optimize your images with OptimizeImg?

Optimizing your images is the perfect balance between visual quality and digital performance. Whether you are looking to reduce photo size to save cloud storage space or need to improve your website's SEO, our tool is the fastest and most private solution. By shrinking your file sizes, you not only make organizing your digital library easier but also ensure your content is shared instantly via WhatsApp, email, or social media.

Our intelligent compression technology removes unnecessary data and hidden metadata without sacrificing image sharpness. The result is professionally optimized files, allowing your memories and projects to load instantly on any device while meeting the most modern web standards.

Supported Image Formats

Choose the right format for your needs. Each format has unique advantages for different use cases. Click to learn more and optimize your images.

Compress JPG

Best for photographs and complex images with gradients.

Compress JPG →

Compress PNG

Perfect for logos, icons, and images needing transparency.

Reduce PNG →

Compress WebP

Modern format with best compression for web performance.

Optimize WebP →

Compress GIF

Reduce animated GIFs without losing frames or quality.

Compress GIF →

More Image Tools

In addition to compressing images, you can also convert between formats directly in your browser.

Convert Image Format

Change between JPG, PNG, WebP and AVIF without losing quality. 100% private.