Professional Image Compressor
Drop your image here
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Supports JPG, PNG, WebP, GIF (max 10MB)
Compression Settings
Basic Compression
Quality: 85% - Best for photosMedium Compression
Quality: 70% - Balanced size & qualityAdvanced Compression
Quality: 50% - Maximum compressionFree Image Compressor — Reduce Image File Size Without Losing Quality
Our free image compressor reduces the file size of JPG, PNG, WebP, and GIF images by up to 90% using advanced compression algorithms — with zero visible quality loss at recommended settings. Upload your image, choose a compression level, adjust the quality slider, and download the optimised file in seconds. No sign-up, no watermarks, no limits.
Images are the largest contributor to page weight on the average website. According to HTTP Archive, images account for over 60% of total page bytes. Compressing your images is the single highest-impact web performance optimisation available — faster pages rank better, load faster for users on mobile connections, and convert at higher rates.
How Image Compression Works
Image compression works by reducing the amount of data needed to represent an image. There are two main types:
Permanently removes some image data — colour detail, fine grain, metadata — to achieve significant size reductions. At quality 75–85%, loss is virtually invisible. File size savings: 50–80%. Used by JPG and WebP formats.
Removes only redundant data — the original image can be perfectly reconstructed. No quality loss at all. File size savings: 10–40%. Used by PNG and GIF formats. Best for logos, icons, and screenshots.
Which Format Should You Compress To?
| Format | Best For | Compression | Transparency |
|---|---|---|---|
| JPG | Photographs, product photos, blog images | Lossy — 50–80% reduction | No |
| PNG | Logos, icons, screenshots, graphics | Lossless — 10–40% reduction | Yes |
| WebP | All web images — modern browsers | Lossy + lossless — 25–35% smaller than JPG | Yes |
| GIF | Simple animations, limited-colour graphics | Lossless — 256 colour limit | Yes (1-bit) |
Choosing the Right Compression Level
Minimal compression with maximum quality retention. Reduces file size by 20–40%. Best for hero images, portfolio photos, and print-destined graphics where pixel-perfect quality matters.
The sweet spot for most website images. Reduces file size by 50–65%. Quality reduction is imperceptible on screen. Recommended for blog images, product photos, and social media content.
Maximum compression for images where bandwidth is the primary concern. Reduces file size by 70–85%. Slight quality reduction visible on close inspection. Best for thumbnails, gallery previews, and email marketing images.
Image Optimisation Best Practices
- Target under 200KB for hero/full-width images
- Target under 100KB for content and sidebar images
- Target under 50KB for thumbnails and icon-sized images
- Use WebP for all new web content — best compression/quality ratio
- Resize images to display dimensions before compressing
- Use
loading="lazy"on below-the-fold images - Specify
widthandheightattributes to prevent layout shift - Use a CDN to serve images from geographically close servers
- Enable gzip or Brotli compression on your web server
- Use responsive images with
srcsetfor different screen sizes
Impact on Core Web Vitals & SEO
Google's Core Web Vitals — Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP) — are direct ranking signals. LCP measures how long the largest visible element (usually a hero image) takes to load. Oversized images are the most common cause of poor LCP scores. Compressing your images to under 200KB significantly improves LCP, which directly improves your Search Console performance report and rankings.
Google PageSpeed Insights specifically flags "Properly size images" and "Serve images in next-gen formats" as opportunities. Fixing these two issues by compressing and converting images to WebP is the highest-ROI performance optimisation for most websites.
Frequently Asked Questions
At the Basic (85%) and Medium (70%) settings, quality reduction is virtually invisible on screen. You would need to zoom in to 200%+ to see any difference. Advanced (50%) shows slight softening on complex textures when viewed at full size. The quality-size trade-off is always shown in the compression stats after each run.
No. Your images are uploaded over an encrypted connection, processed immediately, and deleted. We do not store, view, or share your image files. The compressed download link expires shortly after generation.
The tool supports images up to 10MB. For very large files (RAW photos, high-resolution scans), we recommend resizing to your display dimensions first, then compressing.
Currently the tool processes one image at a time. After downloading, click "Compress Another" to process the next image. Batch processing is a planned feature.
WebP produces files 25–35% smaller than JPG at the same perceived quality, and supports transparency like PNG but at smaller sizes. All major browsers — Chrome, Firefox, Safari, Edge — fully support WebP. Using WebP is one of the most effective ways to pass the "Serve images in next-gen formats" PageSpeed audit.