Free online tools.
No download, no sign-up.
46 tools that run inside your browser, for developers, writers, and everyday work. Your files stay on your device, and you never need an account to use one.
No install needed
Open a tool and start working. You skip the app store, the download, and the setup screen.
Your files stay put
Each tool works on your own machine. Your files never reach a server, so nobody else can read them.
Picks up where you left off
Your browser keeps your work in local storage, so you can close the tab and come back to it.
Developer Tools15 tools
Format code, generate test data, and convert between file formats.
AI Text Detector
Analyze text for AI-writing patterns — vocabulary density, sentence variation, contraction usage, and more. Runs entirely in your browser.
Barcode Generator
Generate barcodes in Code 128, EAN-13, EAN-8, UPC-A, Code 39, and ITF-14. Download as PNG.
Case Converter
Convert text to UPPER, lower, Title, camelCase, snake_case, and more.
DB to CSV Converter
Open a SQLite database and export any of its tables as CSV files — select tables, download instantly, runs in your browser.
Document Converter
Convert DOCX to PDF or extract text from PDF to DOCX — free, private, runs in your browser.
JSON Formatter
Format, validate, and minify JSON instantly.
Lorem Ipsum Generator
Generate placeholder paragraphs or words for mockups and designs.
Password Generator
Generate strong, random passwords with configurable options.
PDF Merger & Splitter
Merge multiple PDFs into one, or extract and split pages — free, private, runs in your browser.
Percentage Calculator
Four common percentage calculations — results update instantly.
QR Code Generator
Generate a downloadable QR code from any URL or text.
Timezone Checker
See your current timezone, UTC offset, and DST status — plus a live world clock for 12 major cities.
Text to Speech
Convert text to spoken audio using your browser's built-in voices — pick voice, speed, and pitch. No upload, no API key.
Unit Converter
Convert between length, weight, temperature, speed, and volume units.
Word Counter
Count words, characters, sentences, paragraphs, and reading time.
Productivity9 tools
Track tasks, take notes, and time your focus sessions.
Age Calculator
Find your exact age in years, months, and days between any two dates, plus days until your next birthday.
Basic Calculator
Add, subtract, multiply, and divide — a simple four-function calculator that evaluates in the order you press buttons.
BMI Calculator
Calculate Body Mass Index from height and weight, with the standard WHO categories and unit toggles.
Bookmark Manager
Save, tag, and search your personal bookmarks — stored in your browser.
Markdown Notes
Write and preview Markdown notes with a split-pane editor.
Pomodoro Timer
Stay focused with a configurable work/break timer.
Scientific Calculator
Trig, logarithms, powers, roots, and memory — a scientific calculator that respects standard order of operations.
Task Manager
Track and prioritize your to-dos with due dates and filters.
Typing Speed Test
Measure your WPM and accuracy across easy, medium, and hard passages.
Finance9 tools
Price your work, track expenses, and plan a mortgage or a savings goal.
Break-even Calculator
Find how many units you need to sell before you start making a profit — instant break-even analysis with a visual chart.
Commission Calculator
Calculate commission amounts, find the sales needed to hit a target, or reverse-engineer the implied rate — with tiered commission support.
Expense Tracker
Log spending by category and visualize it with charts.
Freelance Rate Calculator
Find your ideal hourly rate based on expenses, income goal, tax, and billable hours.
Mortgage & Loan Calculator
Estimate your monthly mortgage payment, total interest, and full amortization schedule with a payment-composition chart.
Profit Margin Calculator
Calculate profit, gross/net margin, and markup from any two of cost, revenue, profit, or margin %.
Savings Goal Tracker
Track progress toward multiple savings goals with contribution history.
Small Business Financial Tracker
Track revenue, COGS, operating expenses, and taxes — instant P&L with margin health badges and a visual revenue-allocation chart.
Tip Calculator
Calculate the tip amount, total, and per-person split for any bill, with quick presets and a custom percentage.
Media & Files13 tools
Compress and convert images, audio, and video without uploading them.
Audio Clipper
Trim any section from an audio file — drag on the waveform to select, preview, then export as MP3, WAV, or OGG. Runs entirely in your browser.
Audio Compressor
Reduce audio file size with bitrate presets — MP3, AAC, or OGG output. Powered by FFmpeg, runs entirely on your device.
Audio Converter
Convert audio between MP3, AAC, OGG, OPUS, FLAC, and WAV — or extract audio from video. Runs entirely on your device, no upload.
Color Palette Generator
Generate harmonious color palettes from any base color — copy hex codes, HSL values, or CSS variables.
HEIC Converter
Convert iPhone HEIC photos to PNG or JPEG — batch convert multiple files, runs privately in your browser.
Image Compressor
Compress JPEG, PNG, and WebP images to a target file size or quality level — private, free, no upload needed.
Image Converter
Convert images between JPEG, PNG, and WebP instantly in your browser — batch convert and download as ZIP.
Image Resizer
Resize images to exact pixel dimensions or scale by percentage — batch resize, runs privately in your browser.
Image Upscaler
Enlarge images up to 4× with Lanczos resampling — sharp results, runs entirely in your browser.
Video Clipper
Trim any section from a video file — drag handles on the thumbnail strip to select, preview, then export as MP4, WebM, or MOV. Runs entirely in your browser.
Video Compressor
Reduce video file size with quality presets and resolution scaling — powered by FFmpeg, runs entirely on your device.
Video Converter
Convert video between MP4, WebM, MOV, AVI, MKV, GIF and extract audio — runs entirely on your device, no upload.
Video to Audio
Extract the audio track from any video — MP4, MOV, MKV, WebM — and save it as MP3, AAC, OGG, OPUS, FLAC, or WAV. Runs entirely on your device, no upload.