Guides
Straight answers to the questions behind the tools — formats, quality, privacy and encodings, explained without fluff.
PNG vs JPG vs WebP: Which Image Format Should You Use?PNG vs JPG vs WebP compared: lossless vs lossy, transparency, file size, and exactly when to use each format for photos, logos, and fast web pages.Image ToolsHow to Compress Images Without Losing QualityLearn how to compress images without visible quality loss: what 70–85% quality really means, lossy vs lossless, resizing first, and mistakes to avoid.Image ToolsHow to Merge PDFs Without Uploading Them AnywhereMerge PDFs without uploading them to a server. Learn why most online PDF tools upload your files, the privacy risks, and how in-browser merging keeps them local.PDF ToolsWhat Is Base64? A Clear Explainer for DevelopersWhat is Base64? How the encoding works (6 bits per character, padding =), why it exists, common uses in data URLs and JWTs, and why it is not encryption.Developer Tools