Guides, Tutorials & Tips

Learn how Base64 encoding converts binary image data to ASCII text, the four Data URI output formats (HTML, CSS, JSON, email), and when NOT to use inline Base64.

A technical guide to image sharpening — how unsharp mask works, the Laplacian kernel, high-pass filter method, correct parameter values, and how to avoid over-sharpening halos. With JavaScript, Python, and Sharp code examples.

Learn when image rotation is lossless, how EXIF orientation causes sideways photos, the math behind canvas expansion, and how to rotate images in code.

Learn the aspect ratio math behind distortion-free resizing, why downscaling is always safe but upscaling loses quality, and the interpolation algorithms behind image resizing. Free, instant, private tool.

Learn how image cropping works, the standard aspect ratios for every major platform, how to apply the rule of thirds for better composition, and the difference between crop and resize. Free online image cropper tool.

Learn the real differences between JPG, PNG, and WebP, lossy vs lossless compression, why re-saving JPG repeatedly degrades quality, and the transparency trap when converting to JPG. Free, instant tool.

Learn how JPEG compression actually works, the optimal quality setting for web images, the difference between lossy and lossless compression, and the mistakes that silently degrade your images. Free online image compressor tool.

Learn what HEX, RGB, HSL, and CMYK color formats are, when to use each, how dominant color extraction works, and how to pick any pixel color from an image in your browser.

A deep dive into Gaussian, motion, radial, and box blur algorithms — how convolution kernels work, what sigma controls, and when to use each blur type for privacy blurring, creative effects, and background softening.