DPI and Print Size: A Practical Guide to Pixels, Resolution and Printing
Understand DPI, pixels, inches and print resolution with practical examples for photos, posters, documents and digital designs.
Deep, practical guides for calculations, conversions, image preparation and developer workflows people actually need.
Understand DPI, pixels, inches and print resolution with practical examples for photos, posters, documents and digital designs.
Learn how image compression works, when to use JPG, PNG or WebP, and how to reduce file size while keeping images useful.
Learn how to format, validate and minify JSON for APIs, debugging, configuration files and production payloads.
Understand Base64 encoding, why it is not encryption, file size overhead, data URLs and safe development workflows.
Learn how JSON Web Tokens are structured, what decoding reveals, and why decoding a JWT does not verify its authenticity.
A practical guide to converting pixels to inches and centimeters for printing, design specifications, photos and documents.
Understand the real differences between PNG and JPG, when each format is the right choice, and how to convert between them without unnecessary quality loss.