Image Resizer – Resize Photos Online Free

How the image resizer works

Enter a maximum width, height or both. Your image is scaled to fit inside those bounds while keeping its original proportions — it is never stretched or cropped. Everything happens on a canvas element in your browser, so nothing is uploaded.

Common resize targets

• Blog content width — 1200 px wide covers most article layouts on retina screens.
• Open Graph / social preview — 1200×630 px is the standard share card size.
• Avatar — 256×256 px is plenty for most sites.
• Email — keep images under 800 px wide so they render fully in desktop clients.

Enter only one dimension and the other adjusts automatically. Enter both and the image fits inside the box — useful when a form demands strict limits. The output keeps your original format, and the new dimensions are appended to the filename so you always know what you saved.

Typical resizes

• 4032×3024 iPhone photo → max width 1200 → 1200×900 px for a blog post.
• 4000×3000 scan → max width and height 800 → 800×600 px to satisfy a portal's limit.
• Batch of 12 photos → capped at 1600 px on the long edge in one pass, each download labelled with its dimensions.