Guides
Longer articles on the questions people search before or after using a tool: which format to pick, how a size limit actually works, why a resize came out blurry. Each guide links to the tools that solve the problem it describes.
All guides
Base64 Images: When to Inline and When Not To
When encoding an image as Base64 actually helps a page, when it makes things worse, and the real size overhead with a worked example.
How to Compress Images Without Losing Quality
How image compression actually works, why a 67 percent smaller file can still look identical, and how to tell when you have pushed too far.
How to Make a Favicon That Looks Sharp on Every Device
Why most favicons look blurry or unreadable, and how to design one that stays legible from a 16 pixel browser tab up to a 512 pixel home screen icon.
How to Reduce a Photo to 100 KB for Online Forms
How to get a photo under a strict 100 KB limit for a job portal, exam board or visa form, with a real before and after example.
What Image Size and Format to Use for a Website
The image sizes and formats that actually load fast on a website, with real before and after numbers from compressing a typical photo.
JPG vs PNG vs WebP: Which Format to Choose in 2026
JPG, PNG and WebP explained with real file size numbers for the same image, so you can pick the right format instead of guessing.
Passport Photo Size by Country: The Complete Table
Passport and visa photo sizes for the US, UK, EU, Pakistan, India, Canada, China, Australia and more, in one table, with exact pixel sizes at 300 DPI.
Social Media Image Sizes Cheat Sheet 2026
Current image sizes for YouTube, Instagram, Facebook, LinkedIn, X, Pinterest, TikTok and WhatsApp, checked against each platform's own help pages.
What Is DPI and Does It Matter for Screens
DPI explained with a real worked example: what it actually controls, why it means nothing on a screen, and when it genuinely matters for print.
Why Your Image Is Blurry After Resizing and How to Fix It
Blurry after resizing almost always means the image was enlarged past its original size. Here is why that happens and what actually fixes it.