Private browser tool

Image Resizer

Resize your images online to custom dimensions (width and height) with aspect lock options. Runs in your browser with no account required.

Always Free
Local processing
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Drag & drop your image here

Supports JPG and PNG • Up to 50MB

Supports JPG, PNG, and WebP • Up to 50MB and 40 megapixels

Tab Preview Simulation
Favicon preview My Website ×
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Original: {{ formatBytes(originalFile.size) }}
Optimized: {{ formatBytes(outputBlob.size) }}-
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Dimensions: {{ outputDimensions }}
The uploaded file format is already matching the requested conversion format. Compression will still apply.
WebP compression preserves alpha transparency channel presets. Converting transparent PNGs to JPEGs will discard transparency backgrounds.
Compression Quality {{ quality }}%
Output Format
Width (px)
Height (px)
Platform Size Presets
Crop & Fit Mode
Padding Fill Color:
Crop Positioning Align
Resize Scale {{ resizePercent }}%
Select Crop Aspect Preset
Crop Frame Size Scale {{ cropScale }}%
Circle Crop Size Scale {{ cropScale }}%
Rotate Angle
Flip Asset Mirror
Flip Asset Mirror
Watermark Text
Font Size (px)
Font Color
Opacity ({{ Math.round(watermarkOpacity*100) }}%)
Position
Click anywhere on the image above to select pixel color
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Download Favicon Outputs
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Paste Base64 Encoded Image Code (e.g. data:image/png;base64,...)
Target Output Format
Images workflow

How to use Image Resizer

Resize your images online to custom dimensions (width and height) with aspect lock options.

Processed locallyZero file uploads to Beginware
  1. Choose an image

    Add a JPG, PNG, or WebP image up to 50 MB and 40 megapixels. The file is read inside your browser.

    Step 1 of 3
  2. Set the dimensions

    Enter the required width and height. Keep the aspect-ratio lock enabled when you want to avoid stretching the image.

    Step 2 of 3
  3. Review and download

    Check the preview and output dimensions before downloading the resized copy. Keep the original until you have verified the result.

    Step 3 of 3
No account required Works instantly in browser Always review important output
Accepted input
JPG, PNG, and WebP
Published limit
50 MB and 40 megapixels
Processing
Local browser canvas
Worked Example

Example: prepare a smaller website image

Input Sample
A 2400 × 1600 JPG product photo
Generated Result
Set the width to 1200 px with aspect lock enabled; the proportional height is 800 px.
Important Checks

Limits and Considerations

  • Resizing changes pixel dimensions; it does not restore detail that is missing from a small original.
  • Very large images require substantial browser memory and may be slower on mobile devices.
  • Always check transparency and output quality before replacing the original file.
Frequently Asked Questions

Image Resizer FAQs

Will resizing stretch my image?

Not when the aspect-ratio lock is enabled. If width and height are changed independently, the image can be distorted.

Does the image leave my device?

No. Beginware reads and processes the supported image in the active browser session.

Can I enlarge an image?

Yes, but enlarging creates additional pixels rather than new detail, so the result may look softer.

Guidance verified .
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