How to resize an image
Camera and phone photos are often far larger than you need for a blog post or profile picture. This resizer scales images to exact pixel dimensions while optionally preserving the original aspect ratio.
- Upload your image — drop a file or use the file picker.
- Enter width and height — type pixel values for the output size you need.
- Toggle aspect lock — when enabled, changing one dimension updates the other proportionally.
- Resize & download — export the scaled image to your computer.
Common resize targets
Match dimensions to where the image will appear. Oversized files waste bandwidth; undersized files look soft when stretched.
| Context | Suggested width | Notes |
|---|---|---|
| Blog content (WordPress) | 1200–1600 px | Fits most themes; compress after resizing. |
| Open Graph / social share | 1200 × 630 px | Landscape preview cards on Facebook and LinkedIn. |
| Instagram square post | 1080 × 1080 px | 1:1 ratio; use the cropper for precise framing. |
| Email newsletter | 600–800 px | Many clients cap display width near 600 px. |
| Thumbnail / avatar | 150–400 px | Small display sizes need fewer pixels. |
Aspect ratio and distortion
Aspect ratio is width divided by height. A 4000 × 3000 photo is 4:3. Locking aspect ratio keeps that proportion when you change one side — the tool calculates the matching dimension automatically.
Turn aspect lock off only when you intentionally need a different shape (for example, forcing a banner into an exact slot). Unlocked resizing can stretch or squash subjects; preview carefully before downloading.
Resize vs compress
Resizing changes pixel dimensions; compression changes how those pixels are encoded. Both reduce file size, but resizing removes data by downsampling while compression packs the remaining pixels more efficiently. For web publishing, resize to the display size first, then compress — that order usually gives the best quality-to-size ratio.
Upscaling limitations
Enlarging a small image beyond its native resolution cannot invent real detail. The canvas interpolates new pixels, which may look soft or blocky. For print or large displays, start from the highest-resolution source you have. This tool is ideal for downscaling camera exports to web-friendly sizes.