ImageToolkit Blog
Tips, guides, and best practices for image optimization, format conversion, and online photo editing.
How to Compress Image to 100KB Online Free — Complete Guide
Step-by-step guide to compressing images to exactly 100KB. Perfect for passport photos, job applications, and email attachments.
WebP vs PNG vs JPEG: Which Image Format Should You Use?
A comprehensive comparison of the three most popular image formats. Learn when to use each one for optimal quality and file size.
Passport Photo Size Requirements by Country — Complete Guide 2026
Everything you need to know about passport and visa photo sizes for the US, UK, EU, China, India, Canada, and more.
How to Convert JPG to PDF in Browser — Free Online Converter
Learn how to convert JPG images to PDF documents directly in your browser. No software, no uploads, completely free.
How to Convert Image to Base64 Online Free — Developer Guide
Convert images to Base64 data URIs for embedding in HTML, CSS, or JavaScript. Perfect for developers and web designers.
How to Compress Image to 50KB Online Free
Compress images to 50KB or less for passport photos, ID cards, and application forms. Step-by-step guide with free online tool.
How to Convert PNG to WebP — Reduce Image Size Without Losing Quality
Convert PNG to WebP and reduce file size by 30%+ while preserving transparency. Complete guide with free browser-based converter.
Instagram Image Size Guide 2026 — Perfect Photo Dimensions
Complete Instagram image size guide for feed posts, stories, reels, and profile photos. Free resizer tool included.
Image Optimization for Web Performance — Complete Guide 2026
Learn how to optimize images for faster websites. Compress, convert to WebP, resize, and lazy load. Free tools for every step.