Kraken.io
Ultra-fast image optimizer with best-in-class compression algorithms
About Kraken.io
Kraken.io is a powerful image optimization and compression SaaS that supports JPG, PNG, WebP, GIF, SVG, AVIF, HEIC, and PDF formats. Its intelligent lossy algorithm typically achieves 60-90% file size reduction with virtually no visible quality loss, while lossless mode preserves every pixel. The platform offers a robust API, WordPress and Magento plugins, bulk optimization via web interface, and cloud storage integration for seamless workflow integration.
Pros & Cons
Pros
- Exceptional compression ratios (60-90% reduction) with negligible quality loss
- Broad format support including modern formats like AVIF, WebP, and HEIC
- Comprehensive API that integrates with any programming language
- Native WordPress and Magento plugins for easy CMS integration
- Free tier available with no credit card required
- Page Cruncher tool for batch-optimizing all images from any URL
- Cloud storage integration with AWS S3, Azure, and Rackspace
Cons
- Free plan limited to only 500 MB per month
- Advanced features locked behind paid plans
- Small team (3 employees) may limit support responsiveness
- No built-in CDN for serving optimized images
- Overage charges apply when exceeding monthly quota
Key Features
Intelligent Lossy Optimization
Proprietary algorithm produces 60-90% file size savings while maintaining outstanding visual quality indistinguishable from the original
Lossless Compression
Reduce file size without altering a single pixel, ideal for images where exact quality preservation is critical
Multi-Format Support
Optimize JPG, PNG, WebP, Animated WebP, GIF, Animated GIF, SVG, AVIF, HEIC, and PDF files
Full REST API
Integrate image optimization into any application or workflow with a comprehensive API compatible with all programming languages
Image Resizing & Cropping
Resize and crop images before optimization with multiple strategy options for precise control
Page Cruncher
Enter any URL to automatically grab, optimize, and download all images from a webpage as a ZIP archive
WordPress & Magento Plugins
Native plugins for WordPress and Magento that automatically optimize images on upload with bulk optimization for existing media
Cloud Storage Integration
Store optimized images directly to Amazon S3, Rackspace Cloud Files, or Azure Blob Storage
Web Interface PRO
Drag-and-drop bulk image optimization through an intuitive browser-based interface with no software installation required
Pricing
- 500 MB of images per month
- $5 per additional GB
- Full API access
- Web Interface PRO
- WordPress & Magento plugins
- 2 GB of images per month
- $4 per additional GB
- Full API access
- Web Interface PRO
- Cloud storage integration
- 5 GB of images per month
- $3 per additional GB
- Full API access
- Web Interface PRO
- Cloud storage integration
- 15 GB of images per month
- $2 per additional GB
- Full API access
- Web Interface PRO
- Cloud storage integration
- 60 GB of images per month
- $1 per additional GB
- Full API access
- Web Interface PRO
- Cloud storage integration
Best For
Website Performance Optimization
Reduce page load times by compressing all website images through the API or Page Cruncher, improving Core Web Vitals and SEO rankings
WordPress Media Library Optimization
Automatically optimize every image uploaded to WordPress and bulk-compress existing media libraries using the native plugin
E-commerce Product Images
Optimize thousands of product photos for online stores via the Magento extension or API to improve shopping experience and conversion rates
Developer Workflow Integration
Integrate image optimization into CI/CD pipelines, build processes, or custom applications using the REST API for automated image processing
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