A practical guide to reducing image file size while keeping your photos sharp, clean and professional.
Start with the correct image format
Use JPG for normal photos, PNG for transparent graphics and WebP for modern websites. Choosing the correct format often saves more file size than reducing quality too aggressively.
Resize before compressing
A 4000px image is usually too large for blog cards, ecommerce products and landing pages. Resize the image close to the display size first, then compress it for the best result.
Use a balanced quality setting
For most website photos, 70% to 85% quality is a strong starting point. Product photos may need slightly higher quality, while blog thumbnails can usually be smaller.
Compare before and after
Do not only chase the smallest file size. Check the preview, final dimensions and saved percentage so the result still looks professional.
Recommended workflow
Upload the image, choose WebP or JPG, set quality around 80%, resize if needed, then download the optimized image. This workflow works for blogs, portfolios, ecommerce stores and social posts.
Ready to test your image?
Open the ImageCrush compressor and reduce image size directly in your browser.
Compress image free →Does ImageCrush upload my images?
No. The tools are designed to process images locally in your browser, so you can compress and convert files without a third-party API.
Which image format should I use?
Use JPG for photos, PNG for transparent graphics and WebP for modern website images.
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