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Image ToolsAvailable

Image Resizer

Resize by pixels, percentage or common presets while preserving proportions.

Resizing happens entirely in your browser.

  • Runs on this device
  • Use local files
  • Download results
Loading the local tool workspace…

About this tool

Create new image dimensions with aspect-ratio locking, presets, format and quality controls, plus a scaled preview.

Your content

Resizing happens entirely in your browser. Files stay on this device.

How to use Image Resizer

  1. 1Choose an image and inspect its original dimensions.
  2. 2Enter width, height, percentage or a preset.
  3. 3Select output settings, resize and download.

Common uses

  • Creating thumbnails
  • Scaling images for a CMS
  • Reducing oversized photos

Limitations

  • Enlarging a small source cannot create real detail.
  • Extreme dimensions are blocked to protect browser stability.

FAQs

How does ratio lock work?

Changing one dimension calculates the other from the original image proportions.

Can I resize without changing format?

Yes. Keep the detected format when it is JPEG, PNG or WebP.

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Related guides

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How image compression affects quality

Choose sensible image dimensions, formats and quality settings while understanding where visible compression artefacts come from.

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How to resize images without distorting them

Change pixel dimensions while preserving proportions, understanding enlargement limits and choosing suitable output settings.

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