What the Resize Image tool does

This tool changes an image's pixel dimensions to whatever exact width and height you type in — presets are there as a shortcut, not a requirement. Unlike cropping, resizing keeps the whole image; it just scales it up or down.

How it works

As you type a width or height, the preview updates immediately using the browser's high-quality canvas scaling, so you can see the result before saving anything. With Lock aspect ratio on, changing one dimension automatically recalculates the other so the picture never looks stretched or squashed; turn it off if you deliberately want a different ratio. Reset restores the image's original dimensions at any point.

How to use it

1. Upload your image — its original dimensions appear right away.
2. Type a custom width and/or height, or pick a preset as a starting point.
3. Leave aspect ratio locked unless you want to distort the image on purpose.
4. Check the live preview and the new-size figure, then press Download. Use Reset to start over.

Quality and size considerations

Shrinking an image loses no meaningful detail and reduces file size. Enlarging an image beyond its original resolution won't add real detail — the tool interpolates new pixels using high-quality smoothing, which can soften edges on large upscales, so it works best for modest size increases rather than blowing a small thumbnail up to poster size.

Common use cases

Resizing is the fix for platforms with exact dimension requirements — a 1080×1080 profile photo, a 1200×630 social share image, or a product photo capped at a maximum width. It's also useful for shrinking oversized camera photos down to something a web page can load quickly.

If you only care about one dimension — say, a maximum width for a blog post — type just that value with the ratio locked, and the matching height fills in automatically so the image keeps its natural proportions.