Reduce Image Size Online Free
Shrink image file sizes with a visual pixel-difference preview. See exactly what changes and how much you save — all without uploading anything.
Processed entirely in your browser
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Why this tool is different: Your images are processed 100% in your browser — nothing is uploaded. Plus, get a pixel-level diff view, interactive slider comparison, and target file size mode that other tools don't offer.
Drop images here or click to browse
Supports JPEG, PNG, WebP, BMP — up to 100 MB per file
Frequently Asked Questions
How can I reduce image size for a website?
For websites, compress images to 70-80% quality and resize to the maximum display width (often 1200-1920px). This typically reduces file sizes by 60-80% while maintaining visual quality on screen.
How do I reduce image size for social media?
Most social platforms re-compress images anyway, so uploading pre-compressed files helps maintain quality. Use 80-85% quality and resize to the platform's recommended dimensions (e.g., 1080x1080 for Instagram).
What is the best way to reduce image file size?
The most effective approach combines three strategies: reduce quality (80% is usually invisible), resize dimensions (match the display size), and choose the right format (JPEG for photos, PNG for graphics with transparency).
How much can I reduce an image file size?
On average, you can reduce image file size by 50-80% with our compressor. The exact reduction depends on the image content, original quality, and your chosen compression settings.
Is this image size reducer private and secure?
Yes. Your images are processed entirely in your browser and never uploaded to any server. We cannot access your files. Check the Network tab in DevTools to verify — zero file uploads.
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