Eleven small tools. One tab. Nothing to install.

Why these run in your browser

Counting words, turning a link into a QR code, converting kilograms to pounds, measuring the contrast between two colours — none of these need a server. A browser can finish any of them in a fraction of a second on the device already in your hand.

So that is where they run. Whatever you type into a tool on this site stays in the tab and is gone when you close it. Nothing is uploaded, nothing is logged, and there is no upload progress bar to sit through. It also means there are no server bills to recover, which is why every tool here is free with no trial, no premium tier and no daily cap.

What you can do here

• AI Prompt Generator — build prompts for image, video, chat and coding models from a set of guided fields, then copy the result as JSON or plain text.
• QR Code Generator — encode a website, plain text, contact card, Wi-Fi network, SMS, email or phone number. Set the size for print, drop your logo in the middle, and download a PNG or SVG.
• Ideal Weight Calculator — a healthy weight range and ideal weight for your height, plus BMI, BMR and daily calorie needs, for adults.
• Age Calculator — exact age in years, months and days, as of today or any date you choose, with a countdown to the next birthday.
• Date Difference Calculator — the gap between two dates, working days only if you need them, and a second panel for adding or subtracting time.
• Word & Character Counter — live word, character, sentence and paragraph counts, plus reading time, a readability score, keyword density and a target tracker.
• Unit Converter — length, weight, temperature, area, volume, speed, time and digital storage, with shortcuts for the conversions people reach for most.
• Color Palette Generator — build a five-colour palette, lock the ones you like, and copy the set as hex, RGB or CSS variables.
• Color Contrast Checker — measure the ratio between text and background, see the WCAG verdicts, and nudge either colour until it passes.
• Password Generator — strong, random passwords with a strength meter, generated with your browser's cryptographic random number source.
• Percentage Calculator — percentage of a number, what percent one number is of another, percentage change, or finding the whole.

Common questions