Developer

Image Compressor

Compress and resize images in your browser. Reduce file sizes by up to 80% without visible quality loss. Supports JPEG, PNG, and WebP output.

Compression Settings

Quality: 80%

10%100%

Output Format

Max Width (px)

Max Height (px)

Drop images here or click to upload

Supports JPEG, PNG, WebP, GIF, BMP, and more

Free Online Image Compressor — No Upload Required

Large images slow down websites, consume mobile data, and hurt your search engine rankings. This tool compresses images directly in your browser — your files never leave your device, ensuring complete privacy and instant results.

Why Image Compression Matters

Website Performance: Images typically account for 50-70% of a web page's total size. Compressing images can reduce page load time by 2-5 seconds, directly improving user experience and SEO rankings.

Core Web Vitals: Google uses Core Web Vitals as ranking signals. Large images negatively impact Largest Contentful Paint (LCP) — one of the three key metrics. Compressed images help you pass Google's performance thresholds.

Mobile Experience: Over 60% of web traffic is mobile. Compressed images reduce data usage for your visitors and load faster on slower connections.

Understanding Image Formats

JPEG: Best for photographs and complex images with many colours. Supports lossy compression with adjustable quality. At 80% quality, most photos look identical to the original while being 60-80% smaller.

PNG: Best for graphics, logos, screenshots, and images with transparency. Supports lossless compression. File sizes are larger than JPEG for photos but perfect for crisp graphics.

WebP: Google's modern format that offers 25-35% better compression than JPEG at equivalent quality. Supported by all modern browsers. The best choice for web use in 2026.

Compression Tips

Quality 80%: The sweet spot for most images. Virtually indistinguishable from 100% but significantly smaller.
Resize first: Don't serve a 4000px image in a 400px container. Resize to the display dimensions before compressing.
Use WebP: If browser support isn't a concern (it shouldn't be in 2026), WebP gives the best quality-to-size ratio.
Batch process: Compress all images before uploading to your website, not one at a time.

Privacy Guarantee

This tool runs entirely in your browser using the HTML5 Canvas API. Your images are processed locally — they are never uploaded to any server. This makes it safe to use with confidential or sensitive images.

Frequently Asked Questions

Is this image compressor safe to use?

Yes, completely. This tool runs entirely in your web browser. Your images are never uploaded to any server — all compression happens locally on your device. Your files remain private and secure.

What quality setting should I use?

For most images, 80% quality provides the best balance between file size and visual quality. At this setting, compression is virtually invisible to the human eye while reducing file size by 60-80%. Use 90%+ for professional photography.

Which image format is best for websites?

WebP offers the best compression for web use — 25-35% smaller than JPEG at equivalent quality. All modern browsers support WebP. Use JPEG as a fallback for older systems, and PNG only when you need transparency.

How much can I reduce image file sizes?

Typical compression results: JPEG at 80% quality reduces file size by 60-80%. Converting to WebP saves an additional 25-35%. Resizing oversized images (e.g., 4000px to 1200px) can reduce file size by 90% or more.

Need Image Optimisation for Your Website?

We optimise website performance including image delivery, lazy loading, and CDN configuration.

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