Image Resizer

Resize images to exact pixel dimensions or percentages right in your browser. Output to JPEG, PNG, or WebP with a quality slider — all powered by the Canvas API, so nothing is uploaded. Full guide →

Image Resizer

Resize images while maintaining aspect ratio. Perfect for logos, thumbnails, and optimized images.

Original Image

Drop image here or click to upload

Supports JPG, PNG, GIF, WebP (Max 10MB)

Tips

• Maintain aspect ratio is enabled by default to prevent distortion

• PNG preserves transparency, WebP offers best compression

• JPG is smallest but doesn't support transparency

• Use percentage mode for quick scaling (e.g., 50% = half size)

• All processing happens in your browser - your images never leave your device

Resized Image

Resized image will appear here

Resize images for web and social layouts

What is this tool?

Resize by pixel dimensions or scale while preserving aspect ratio when needed — powered by the browser canvas.

Great for avatars, thumbnails, blog heroes, and lightweight banners.

When should you use it?

Before uploading to CMS limits. When generating multiple derivatives from a single master asset.

When chat apps over-compress huge screenshots — pre-sizing keeps important detail readable.

Real-world use cases

Developers shrinking README screenshots. Shop operators normalizing product shots for consistent grids.

Quick examples

A 4000 px photo → 1200 px wide JPEG at quality 85 for a blog hero. A square logo → 64 px for a favicon experiment.

Why it matters

Smaller files improve LCP and mobile data usage; doing it locally keeps drafts off third-party image hosts.

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About Image Resizer

Resize images to exact dimensions or percentages directly in your browser. No upload required — all processing happens client-side using the Canvas API, so your photos never leave your device.

Key Features

-Resize by exact pixels or percentage
-Maintain or change aspect ratio
-Support for JPEG, PNG, and WebP formats
-Quality control slider for output
-Batch processing for multiple images
-Instant preview before download

Use Cases

Social Media

Resize images to platform-specific dimensions for Instagram, Facebook, Twitter, and LinkedIn.

Web Optimization

Reduce image file sizes for faster page load times and better Core Web Vitals scores.

Email Attachments

Shrink large photos to fit email size limits without losing important visual detail.

Print Preparation

Adjust image dimensions to match specific print format requirements.

Frequently Asked Questions

Does resizing reduce image quality?▾

Reducing size preserves quality well. Enlarging beyond the original size will introduce blur. Use the quality slider to balance file size and visual fidelity.

What image formats are supported?▾

JPEG, PNG, and WebP. The output format matches your input unless you choose otherwise.

Is my image uploaded to a server?▾

No. All processing happens in your browser using the Canvas API. Your images never leave your device.

Tips & Best Practices

-Use WebP format for the best file size to quality ratio
-Set quality to 80% for most web use cases — barely visible difference from 100%
-Always resize down rather than up to maintain sharpness