Image Processing Guides
Practical information to help you choose the right formats, compression methods, and workflows for your images.
Compression
How to Compress Images
Practical techniques for reducing image file sizes while maintaining acceptable quality.
Lossy vs Lossless Compression
Understand the two main types of image compression and when to use each.
Optimize Images for Web
Best practices for preparing images for fast, efficient web delivery.
Image Formats
Image Formats Guide
An overview of JPG, PNG, WebP, GIF, HEIC, AVIF, and other image formats.
JPG vs PNG
A detailed comparison of two widely-used image formats.
JPG vs WebP
How WebP compares to JPG for web images.
PNG vs WebP
Comparing two formats that both support transparency.
WebP vs AVIF
Two next-generation formats — one established, one emerging.
PNG vs GIF
Quality vs animation — when to use each format.
Conversion & Resizing
Social Media
Social Media Image Sizes (All Platforms)
Complete reference for every platform in one page.
Instagram Image Sizes
Posts, stories, reels, and profile dimensions.
YouTube Image Sizes
Thumbnails, channel art, and profile dimensions.
LinkedIn Image Sizes
Feed posts, profiles, and company pages.
X / Twitter Image Sizes
Feed images, cards, and profile dimensions.
TikTok Image Sizes
Video thumbnails and profile dimensions.
Pinterest Image Sizes
Pins, boards, and profile dimensions.
Optimization
Image Optimization Checklist
Complete checklist for optimizing images on websites.
Web Performance & Images
How images impact Core Web Vitals, LCP, CLS, and page speed.
Responsive Images Guide
srcset, picture element, and art direction for modern web development.
Image SEO Guide
Alt text, file names, formats, and structured data for search engines.
Image Accessibility Guide
Alt text, ARIA, color contrast, and screen reader compatibility.
Research & Reference
Compression Benchmark 2026
Original data comparing JPG, PNG, WebP, and AVIF with documented methodology.
Social Media Image Sizes 2026
Complete reference for Instagram, YouTube, LinkedIn, Facebook, and more.
Image Format Browser Compatibility 2026
Browser support matrix for JPG, PNG, WebP, AVIF, HEIC, and more.
HEIC Compatibility Guide
Apple HEIC format — support, conversion, and workarounds.
Browser Image Processing APIs
Canvas, OffscreenCanvas, WebGPU, and WASM for client-side image processing.
Common Questions About Image Processing
What is the best image format for websites?
For photographs, WebP lossy offers 25-35% smaller files than JPG at equivalent quality. For graphics with transparency, use PNG or WebP lossless. AVIF offers even better compression but has limited browser support.
Read the full format guide →How do I compress images without losing quality?
Use lossless compression (PNG, WebP lossless) for zero quality loss, or lossy compression at quality 80-90% for imperceptible quality loss with 30-50% file size reduction.
Read the compression guide →Is WebP better than JPG?
WebP lossy produces 25-35% smaller files than JPG at equivalent visual quality. WebP also supports transparency (like PNG) and animation (like GIF). Browser support is now 97%+.
Read the full comparison →What image size should I use for social media?
Each platform has specific requirements. Instagram feed: 1080×1080. YouTube thumbnail: 1280×720. LinkedIn: 1200×627. Use our tools to resize for any platform.
See all platform sizes →Are my images safe when using online tools?
Our tools process images entirely in your browser. No files are uploaded to any server. Your images never leave your device. This is verifiable in the page source code.
Read our privacy policy →What is the difference between lossy and lossless compression?
Lossy compression removes some data for smaller files (JPG, WebP lossy). Lossless compression reduces file size without any data loss (PNG, WebP lossless, GIF).
Read the full explanation →