Image Compressor
Compress JPEG, PNG, and WebP images online for free without losing visible quality.
Upload an image to see live preview
Image Compressor — image compressor online free
Flixfer's Image Compressor reduces JPEG, PNG, and WebP file sizes by up to 80% using intelligent lossy and lossless compression algorithms — all within your browser. A live before/after preview lets you find the perfect balance between file size and image quality before saving. Your images are never uploaded to any server.
Features
- Supports JPEG, PNG, and WebP formats
- Adjustable quality slider with live preview
- Up to 80% file size reduction
- Browser-based — zero server uploads
- Batch compress multiple images simultaneously
- Download compressed images individually or as a ZIP
How to use Image Compressor
- Open the Image Compressor tool.
- Upload one or more images.
- Adjust the quality slider to balance size vs. quality.
- Preview the result in the side-by-side comparison.
- Download individual files or all files as a ZIP.
FAQ
Why Image Size Directly Impacts SEO
Google uses page load speed as a confirmed ranking factor. Images are the single largest contributor to page weight on most websites. According to HTTP Archive data, the median webpage transfers over 1 MB in images alone.
Google's PageSpeed Insights explicitly flags "Properly size images" and "Serve images in next-generation formats" as high-priority optimization opportunities. Compressing your images addresses both of these simultaneously.
Compression by Image Type
| Image Type | Best Format | Typical Reduction | Notes |
|---|---|---|---|
| Photographs | JPEG / WebP | 40–70% | Use quality 75–85 for web |
| Screenshots | PNG / WebP | 20–50% | Lossless preferred for text clarity |
| Logos / Icons | SVG / PNG | 30–60% | SVG is best for scalable graphics |
| Product images | WebP / AVIF | 40–60% | Modern formats for e-commerce |
After Compression — Best Practices
- Convert to WebP format after compression for an additional 25–35% size reduction vs. JPEG.
- Use the HTML
srcsetandsizesattributes to serve appropriately sized images to different screen sizes. - Add
loading="lazy"to off-screen images so browsers don't fetch them until needed. - Use Image Resizer to set exact pixel dimensions before compressing — don't let browsers scale down oversized images.
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Benefits
- Faster website loading and better Core Web Vitals scores
- Meet upload size limits for social media and portals
- Reduce cloud storage consumption
- Free with no watermarks or subscriptions