Practical, step-by-step tutorials for working with images, PDFs, and text files — all using free tools that run in your browser.
Set your image to 300 DPI, 600 DPI, or any value for print-ready output — and understand what DPI actually does.
ImagesReduce image file sizes for faster websites and email — without visible quality loss. Format and quality settings explained.
ImagesThe correct image dimensions for Instagram, Facebook, Twitter/X, YouTube, and Pinterest — plus how to resize in seconds.
PDFFill forms, sign documents, and annotate PDFs entirely in your browser — no upload, no software, fully private.
SecurityWhat actually makes a password secure, the mistakes to avoid, and how to generate and remember strong passwords.
PrivacyHow local processing keeps your files on your device, and how to verify a tool isn't secretly uploading your data.
Looking for something specific? These pages walk through common exact-size tasks with real guidance: compress an image to 100KB, to 50KB for forms, or to 20KB for strict limits. Every guide here is written to be genuinely useful, with clear steps and no fluff.