Image Compressor & Resizer
Professional online batch image resizer and compressor tool supporting multiple formats with high quality preservation for website optimization and social media publishing
📁Select Image
Drop image here, or click to select file
Supports JPG, PNG, GIF, WebP formats, max 20MB
🚀Why Choose Our Image Compressor & Resizer?
Fast Local Processing
Browser-based Canvas API processing, no upload/download required, instant image resizing
Privacy Protection
100% local processing, images never uploaded to servers, compliant with GDPR data protection regulations
Quality Control
Adjustable 1-100% quality settings to find the perfect balance between file size and image quality
❓Frequently Asked Questions (FAQ)
❓Why do my resized images look blurry?
Image blur is usually caused by:
- Quality setting too low: Keep JPEG quality above 80%
- Excessive enlargement: Avoid enlarging beyond 2x original size
- Low original resolution: Low-res images will lose quality when enlarged
💡 Tip: Use our AI enhancement mode for better clarity when enlarging
🎯Which format is best for my use case?
JPEG
Best for: Photos, complex images
Small file size, no transparency
PNG
Best for: Logos, icons, screenshots
Supports transparency, larger files
WebP
Best for: Modern websites
Best compression, good compatibility
🎨Professional Tips & Best Practices
🌐Website Optimization Tips
- • Hero images: Recommended 1920x1080, JPEG 85% quality
- • Product images: 800x800 square, WebP format preferred
- • Thumbnails: 300x300, JPEG 70% quality sufficient
- • Hero banners: Keep under 500KB for faster loading
📱Social Media Dimensions
- • Instagram posts: 1080x1080 (1:1 square)
- • Facebook covers: 1200x630 (1.91:1)
- • WeChat moments: 1280x960 (4:3)
- • Twitter images: 690x518 recommended
🖨️Print Output Guidelines
- • A4 printing: 2480x3508 pixels (300DPI)
- • ID photos: 358x441 pixels (1 inch)
- • Posters: Maintain 300DPI based on size
- • Business cards: 1050x630 pixels standard
⚡Performance Optimization
- • Mobile images: Keep width under 750px
- • E-commerce mains: 1000x1000, file <200KB
- • Background images: Can reduce quality to 60-70%
- • Avatars/icons: 256x256, PNG format
📚Complete User Guide
🎯What is Image Resizing?
Image resizing is a technique to scale images to specific dimensions. Our tool supports intelligent aspect ratio preservation, multiple output formats, and high-quality image resampling algorithms to ensure optimal clarity and quality after resizing.
This tool is completely browser-based using HTML5 Canvas API and advanced image processing algorithms. All processing is done locally on your device, ensuring image data security and privacy protection.
⭐Key Features
📋Step-by-Step Guide
Step 1: Upload Image File
Upload image files by dragging or clicking the select button. The system automatically detects original dimensions and displays detailed file information including size and format. Supports JPG, PNG, GIF, WebP and other common formats.
Step 2: Set Target Dimensions
Enter target width and height, choose whether to maintain aspect ratio. When aspect ratio lock is enabled, modifying either dimension automatically calculates the other to ensure image proportions remain unchanged.
Step 3: Choose Output Settings
Select output format (JPEG for photos, PNG preserves transparency, WebP modern efficient) and quality level. Balance file size with image quality needs based on intended use.
Step 4: Preview and Download
Click "Start Resize" to process. After completion, view the before/after comparison in the preview area, and click download button to save the resized image once satisfied with results.
🎯Popular Use Cases Detailed
🌐Website SEO Optimization
Compress image file sizes to improve Core Web Vitals scores and page load performance
Recommended: WebP format, 80-85% quality
📱Social Media Content
Perfect dimensions for Instagram, Facebook, Twitter and other platforms
Recommended: 1080x1080 square, JPEG 90%
🖨️Professional Printing
Precise matching to A4, A3, ID photo and other standard print specifications
Recommended: 300DPI, PNG lossless format
📐Responsive Design
Generate multiple size image assets for mobile, tablet, desktop devices
Recommended: 2x/3x retina images, progressive loading
🛍️E-commerce Products
Standardize product image dimensions for improved store visual professionalism
Recommended: 800x800, white background, file <100KB
👤Avatar & Logo Creation
Create social avatars, website logos and other small precision graphics
Recommended: 256x256, PNG transparent background
⚡Competitive Advantage Comparison
| Features | Our Tool | Online Tool A | Desktop App B |
|---|---|---|---|
| Processing Speed | Lightning Fast | Slower | Medium |
| Privacy Security | 100% Local | Upload to Server | Local Processing |
| Format Support | All Formats | Limited Formats | Good Support |
| Usage Cost | Completely Free | Limited/Paid | Purchase Required |