
Free, private, browser-based tools. No uploads, no signup, no limits — everything runs on your own device.
Resize and convert images to WebP, JPG, or PNG instantly in your browser.
Shrink My Pics 📱Convert iPhone HEIC/HEIF photos to JPG or PNG — batch supported.
Free · No signup 🧿Generate every favicon size you need — 16×16 to 512×512 — from one image.
Free · No signup 💧Add a text watermark to one or many photos at once, with tiling and position control.
Free · No signupBeautify, minify, and validate JSON with precise error locations.
Free · No signup #️⃣Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or a file.
Free · No signup 🔤Convert text to UPPERCASE, camelCase, snake_case, kebab-case, and more.
Free · No signupConvert length, weight, temperature, volume, and area units instantly.
Free · No signup 🏠Estimate monthly payments, total interest, and a full amortization schedule.
Free · No signup ⚖️Calculate Body Mass Index using metric or imperial units.
Free · No signup 💯Percentages, percentage change, increase and decrease — all in one place.
Free · No signup 🎂Exact age in years, months, and days, or days until any future date.
Free · No signupCreate a custom QR code from any link or text and download it instantly — free, no watermark.
Free · No signup 📄Combine multiple PDFs, split one into pages, or shrink file size — all in your browser.
Free · No signup 📝Live word count, character count, sentences, and reading time as you type.
Free · No signup 🔐Generate strong, random passwords with a real-time strength meter.
Free · No signup 🎨Pick a color, get HEX/RGB/HSL instantly, plus shades and matching colors.
Free · No signup 📄Generate placeholder text by paragraphs, sentences, or words.
Free · No signupMost "free" online tools quietly upload your files to a server to process them — which means your documents and images pass through someone else's infrastructure before you get them back. Every tool here runs entirely in your own browser using JavaScript and WebAssembly, so your files are never uploaded, never stored, and never seen by anyone but you. No accounts, no watermarks, no limits.