Image ToolsFree online tool

Image Resize

The helper clamps dimensions to safe positive values to avoid invalid canvas output.

Resize images by width, height, or percentage while preserving aspect ratio when needed.

Free online toolNo signup requiredBrowser-first workflow

Interactive tool

Use Resize

Focused inputs, clear output, and practical defaults for a fast image workflow.

Image fileChoose an image, then set target dimensions.No file selectedBrowse

Width

Height

Output format

Original

No image

Output

1200 x 800

Output size

0 B

Processed image preview appears here.

Choose an image to generate output.

Useful for

Create thumbnailsPrepare social imagesResize uploads before sharing

Built as a focused browser utility so users can inspect inputs and outputs without a long setup flow.

Can aspect ratio be locked?

Yes. When locked, changing width or height recalculates the other dimension automatically.

What happens if dimensions are too small?

Continue the workflow with tools that pair naturally with this one.