The latest articles on DEV Community by Blanza Tools (@blanzatools). https://dev.to/blanzatools https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4176447%2F39321ac6-525d-480d-a027-d5b6a1e15afb.png https://dev.to/blanzatools en Blanza Tools Sun, 11 Oct 2026 06:42:14 +0000 https://dev.to/blanzatools/14-free-browser-tools-i-built-with-vanilla-js-no-signup-no-uploads-4cn7 https://dev.to/blanzatools/14-free-browser-tools-i-built-with-vanilla-js-no-signup-no-uploads-4cn7 <p>I got tired of tools sites that force signups, watermark your files, or upload your photos to some server. So I built <a href="https://blanzatools.com" rel="noopener noreferrer">BlanzaTools</a> — 14 free tools that run 100% in your browser. Your files never leave your device.</p> <p><strong>Image Tools</strong></p> <ul> <li> <a href="https://blanzatools.com/image-compressor/" rel="noopener noreferrer">Image Compressor</a> — shrink JPG, PNG and WebP without visible quality loss</li> <li> <a href="https://blanzatools.com/image-resizer/" rel="noopener noreferrer">Image Resizer</a> — exact pixel dimensions for social media and web</li> </ul> <p><strong>Text Tools</strong></p> <ul> <li> <a href="https://blanzatools.com/word-counter/" rel="noopener noreferrer">Word Counter</a> — words, characters, sentences, reading time</li> <li> <a href="https://blanzatools.com/text-case-converter/" rel="noopener noreferrer">Text Case Converter</a> — UPPERCASE, lowercase, Title Case and more</li> <li> <a href="https://blanzatools.com/lorem-ipsum-generator/" rel="noopener noreferrer">Lorem Ipsum Generator</a> — placeholder text by paragraphs, words or sentences</li> </ul> <p><strong>Calculators</strong></p> <ul> <li> <a href="https://blanzatools.com/age-calculator/" rel="noopener noreferrer">Age Calculator</a> — exact age plus next-birthday countdown</li> <li> <a href="https://blanzatools.com/bmi-calculator/" rel="noopener noreferrer">BMI Calculator</a> — metric and imperial units</li> <li> <a href="https://blanzatools.com/percentage-calculator/" rel="noopener noreferrer">Percentage Calculator</a> — X% of Y, reverse percentages, % change</li> <li> <a href="https://blanzatools.com/unit-converter/" rel="noopener noreferrer">Unit Converter</a> — length, weight, temperature, data and more</li> </ul> <p><strong>Generators</strong></p> <ul> <li> <a href="https://blanzatools.com/password-generator/" rel="noopener noreferrer">Password Generator</a> — strong random passwords, generated locally</li> <li> <a href="https://blanzatools.com/qr-code-generator/" rel="noopener noreferrer">QR Code Generator</a> — free QR codes, download as PNG</li> <li> <a href="https://blanzatools.com/color-picker/" rel="noopener noreferrer">Color Picker</a> — HEX/RGB/HSL converter with shades and palettes</li> </ul> <p><strong>Dev &amp; Time</strong></p> <ul> <li> <a href="https://blanzatools.com/json-formatter/" rel="noopener noreferrer">JSON Formatter</a> — format, minify and validate with pinpointed errors</li> <li> <a href="https://blanzatools.com/countdown-timer/" rel="noopener noreferrer">Countdown Timer</a> — live countdowns with handy presets</li> </ul> <p>Everything is vanilla client-side JavaScript — no accounts, no watermarks, no limits. If you try them, I'd genuinely love to hear which tool you'd want next.</p> tools webdev productivity javascript