15 Free Online Tools — No Signup, Works Offline
MicroTools is 15 free online tools, no signup, works offline. Everything runs 100% in your browser: nothing you type is uploaded, no account is needed, and every page keeps working even without internet. Pick a tool below — it opens instantly.
Word Counter
Count words, characters, sentences, paragraphs and reading time live as you type.
🔠Case Converter
Convert text to UPPER CASE, lower case, Title Case, Sentence case, camelCase or snake_case.
🧾JSON Formatter
Pretty-print, minify and validate JSON with the exact error line and column.
🧬Base64 Encoder
Encode or decode Base64 text, with full Unicode and emoji support.
🔗URL Encoder
Percent-encode or decode URLs and query parameters safely, two modes.
🔑Password Generator
Create strong random passwords with charset options and a live strength meter.
#️⃣Hash Generator
Compute SHA-256, SHA-384 and SHA-512 hashes locally in your browser.
📐Unit Converter
Convert length, weight, temperature and volume with two synced inputs.
🎨Color Tools
Pick colors and get HEX, RGB, HSL, shades, tints and instant palettes.
📄Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words for mockups and drafts.
🍅Pomodoro Timer
25/5 focus cycles with a session counter and a soft beep when time is up.
⏳Countdown Timer
Set hours, minutes and seconds with a big display and an alarm.
🎯Random Picker Wheel
Paste a list, spin the animated wheel and let fate make the choice.
🎲Dice Roller
Roll d4 to d100 polyhedral dice for tabletop games, with totals and modifier.
🔎Text Diff
Compare two texts and highlight every added or removed line.
Why MicroTools?
Most “free online tool” sites bury a simple utility under ads, cookie walls and forced signups. MicroTools does the opposite: each tool is a single fast page that does exactly one job. Because all 15 tools are pure HTML, CSS and JavaScript, they load in under a second on mobile data and even work with your Wi-Fi switched off — save a page and it keeps running.
Privacy is built in: your text, passwords, JSON and files never leave your device. There is no server, no database and no account. The collection covers the everyday jobs people search for — counting words for an essay limit, formatting an API response, generating a strong password, converting units for a recipe, or picking a random lunch spot with the spinner wheel.
Popular starting points: the word counter for students and writers, the JSON formatter for developers, the password generator for everyone, and the pomodoro timer for focus sessions.
Is it really free?
Yes — every tool on this site is completely free to use, with no limits and no registration. The site is supported by unobtrusive ads, so the tools stay free for everyone.