Image Resizer Cluster

Resize Image by Pixels — Exact Width & Height Control

Image Resizer

100% client-side · No uploads · Powered by HTML5 Canvas

Need the main tool? Image Resizer

Pixel Arithmetic Without Guesswork

When “close enough” breaks layouts

CMS templates, ad slots, and game sprites demand resize image to exact dimensions — not “about 1200 wide.” Our image pixel resizer exposes integer width and height fields so developers and designers hit spec sheets literally.

Custom image dimensions without distortion

Enable aspect lock and edit one side — the image width and height changer calculates the counterpart. Disable lock when you need a forced box (knowing stretch risk). This is resize image to custom dimensions with eyes open.

Resize image before upload

Portals reject oversize uploads. Resize image to exact pixels locally first — you control quality and avoid server-side auto-crop that trashes composition.

How it works

  1. 1

    Upload and read natural size

    Canvas reports original image dimensions instantly — your baseline for custom size math.

  2. 2

    Enter target pixels

    Type width and height in the image dimension editor. Use lock for proportional scale or unlock for exact box fitting.

  3. 3

    Export pixel-perfect output

    Download a file named with output dimensions — resize image to exact pixels confirmed in preview.

Use cases

App store screenshots

Hit Apple and Google pixel requirements exactly.

Banner ad slots

Match IAB standard widths without rejection emails.

Sprite sheets

Normalize frame sizes for game engines.

Form uploads

Resize image before upload to government and job portals.

Problems we solve

Percentage sliders that hide integers

“50% scale” is useless when the spec says 628×1200. Pixel fields remove ambiguity.

Accidental stretch

Aspect lock prevents silent distortion when you only meant to change one axis.

Cloud rounding

Server tools sometimes output off-by-one dimensions. Local Canvas matches your typed integers.

Trust & technology

Integer pixel output

What you type is what Canvas draws.

Private local edit

Custom dimensions never leave your browser.

Instant preview

See exact dimensions before download.

Frequently asked questions

Image Resizer
Resize Image by Pixels — Exact Dimensions & Custom Size | Convertify4u