How to Resize an Image

Reduce image dimensions and file size

⚡Quick Answer

Mac: Preview > Tools > Adjust Size. Windows: Paint > Resize. Online: iloveimg.com or squoosh.app. Compress: tinypng.com.

Open image in Preview. Go to Tools > Adjust Size. Enter new dimensions or percentage. Save.

💡Check 'Scale proportionally' to avoid distortion.

Open in Paint. Click Resize (Home tab). Choose percentage or pixels. Click OK. Save As to keep original.

💡For better quality, use Photos app or free tools like GIMP.

Use iloveimg.com/resize-image or squoosh.app. Upload, set dimensions, download. No signup needed.

💡Squoosh offers real-time preview and advanced compression.

Use tinypng.com or compressor.io to reduce file size without changing dimensions. Great for web images.

💡Can reduce file size 50-80% with minimal quality loss.

Most web images: 1200-2000px wide max. Thumbnails: 300-500px. Balance quality vs. load time.

Yes. For printing, keep at least 300 DPI. A 4x6 print needs minimum 1200x1800 pixels.

JPEG for photos (smaller files). PNG for graphics/logos (keeps transparency). WebP is best for web.

Was this helpful?