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Image Resizer Tool

Professional image resizer for web developers, designers, and everyday users. Pixel-perfect resizing in your browser.Upload multiple images for batch processing. Your files never leave your device. 100% free & private.

Zero uploads
Instant process
All devices
Batch processing

Drag & drop your images here

Select multiple images for batch processing

or

Supports JPG, PNG, WebP • Max 10MB each • Batch upload supported

Resize Mode

File Size Settings

Preview

Upload images to see preview

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Why Developers & Designers Choose This Image Resizer

Resizing images is critical for web performance and storage. Large images slow down websites and take up unnecessary space. Our Image Resizer Tool helps you optimize photos for the web by reducing file size and adjusting dimensions.

Image Optimization for Web Performance

Google ranks faster sites higher. Here's how image size affects Core Web Vitals:

MetricImpact of Large ImagesFix
LCP (Largest Contentful Paint)Slow hero image = bad LCPResize to display dimensions
CLS (Cumulative Layout Shift)Missing width/height = layout shiftSet exact pixel dimensions
Total Page SizeImages are 50%+ of page weightCompress to target KB
Mobile Experience4G/3G users abandon slow pagesUse WebP + proper sizing

Recommended Image Sizes by Use Case

Website Hero

Dimensions: 1920 × 1080 px

Target size: 200–300 KB

Format: WebP / JPG

Blog Post Image

Dimensions: 800 × 600 px

Target size: 80–150 KB

Format: WebP / JPG

Email Attachment

Dimensions: 800 × 600 px

Target size: Under 500 KB

Format: JPG

E-commerce Product

Dimensions: 1000 × 1000 px

Target size: 100–200 KB

Format: WebP / PNG

Thumbnail

Dimensions: 300 × 300 px

Target size: 20–50 KB

Format: WebP / JPG

App Icon

Dimensions: 512 × 512 px

Target size: 50–100 KB

Format: PNG

Key Benefits for Professionals

  • SEO Friendly: Smaller images load faster, improving your Core Web Vitals and search rankings
  • Exact Dimensions: Resize to precise width and height (e.g., 1920×1080, 800×600)
  • Format Conversion: Convert PNG to JPG or WebP automatically during resizing for smaller files
  • Batch-friendly workflow: Quick upload, resize, download cycle — each image under 2 seconds
  • No server upload: Your client images stay on your device — important for NDA-protected work

Frequently Asked Questions

Does image size affect SEO and page speed?→
Yes, significantly. Google uses page speed as a ranking factor. Unoptimized images are the #1 cause of slow web pages. A 5MB hero image could be 200KB with no visible quality loss, saving 4+ seconds of load time.
What are the best image dimensions for web pages?→
For full-width hero images: 1920×1080 px. For blog content images: 800–1200 px wide. For thumbnails: 300–400 px. Always match the display size — don't serve a 4000px image displayed at 800px.
How much can I compress an image without quality loss?→
JPEG at quality 80-85% looks identical to 100% for most photos. That alone can reduce file size by 60-70%. Combined with dimension resizing, you can achieve 90%+ reduction with no visible difference.
Should I use JPG or WebP for web images?→
WebP offers 25-35% smaller files than JPG at equal quality. If your website supports it (most modern browsers do), use WebP. For email attachments and forms, stick with JPG for universal compatibility.
What is the ideal image file size for fast web pages?→
Under 200KB per image is a good target for web. Hero images can be up to 300KB. Thumbnails should be under 50KB. Google recommends total page size under 1.5MB including all images.

More Image Tools

Convert Image Format→Crop Image→Remove Background→Compress PDF→Change Background→Resize by Pixels→