Free Online Developer & Web Tools
Fast, secure, client-side web utilities. Calculate mortgages, compress photos, merge PDFs, transform text formatting, and convert units without installing software or sending confidential data over the internet.
Mortgage & Amortization Calculator
Calculate monthly mortgage payments, property tax, PMI, home insurance, and view complete year-by-year amortization schedules.
Auto & Car Loan Payment Calculator
Calculate monthly auto loan payments, trade-in equity, sales tax, total financing amount, and lifetime interest.
Compound Interest & Wealth Growth Calculator
Calculate compound investment returns and project future net worth with regular monthly contributions.
Hourly Wage to Annual Salary Calculator
Convert between hourly rate, daily pay, bi-weekly, monthly, and annual salary with custom work hours and overtime.
Credit Card Payoff & Interest Calculator
Find out how fast you can pay off credit card debt and how much interest you save with extra monthly payments.
ROI & Profit Margin Calculator
Compute Return on Investment (ROI), Gross Profit Margin, Net Margin, and Cost Markup Percentage instantly.
Bulk Image Compressor (JPG, PNG, WebP)
Compress JPG, PNG, and WebP images directly in your browser without uploading to any server.
Image Resizer & Aspect Ratio Scaler
Resize image dimensions by exact pixels or percentage with aspect ratio lock and social media presets.
Image Format Converter (PNG, JPG, WebP)
Convert images between PNG, JPG, WebP, and BMP format with zero server uploads.
Image Cropper & Circle Avatar Maker
Crop photos visually with 1:1, 16:9, 4:5 ratios or create circular profile avatars with transparent backgrounds.
Image Color Picker & Palette Extractor
Eyedropper tool to pick any color pixel from an uploaded image and extract HEX, RGB, HSL palettes.
Custom QR Code Generator with Colors
Generate custom QR codes for URLs, WiFi networks, vCards, text, and phone numbers in high-res PNG/SVG.
Client-Side PDF Merger
Combine multiple PDF files into one document inside your browser memory with drag-to-reorder.
PDF Splitter & Page Extractor
Extract specific page ranges (e.g., 1-3, 5) or separate a PDF into individual files.
PDF Page Rotator & Layout Organizer
Rotate PDF pages 90, 180, or 270 degrees clockwise or counter-clockwise permanently.
Images to PDF Converter (JPG/PNG to PDF)
Convert multiple JPG, PNG, and WebP photos into a clean formatted multi-page PDF document.
PDF Watermark & Page Numberer
Add diagonal text watermarks, confidential stamps, and automatic page numbers to any PDF document.
PDF Metadata Inspector & Privacy Stripper
Inspect PDF Title, Author, Creator, and Creation Date, or strip all metadata for anonymous sharing.
Word, Character & Reading Time Counter
Count words, characters, sentences, paragraphs, reading time, and speaking time in real time as you type.
10-in-1 Text Case Converter
Convert text instantly between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and PascalCase.
Text Diff Comparison & Difference Checker
Compare two text snippets, code blocks, or documents to highlight insertions, deletions, and line changes visually.
Duplicate Line Remover & List Sorter
Clean lists by removing duplicate entries, sorting lines alphabetically (A-Z / Z-A), and trimming whitespace.
Lorem Ipsum Dummy Text Generator
Generate placeholder Latin dummy text by paragraphs, sentences, words, or lists with optional HTML tags.
Text-to-Speech (TTS) Audio Reader
Listen to text read aloud using native browser speech synthesis with voice, pitch, and speed controls.
Exact Age & Date Difference Calculator
Calculate exact age in years, months, days, total hours, minutes lived, and upcoming birthday countdown.
BMI, Calorie & Body Health Calculator
Calculate Body Mass Index (BMI), Basal Metabolic Rate (BMR), and daily maintenance calorie needs.
4-in-1 Percentage & Discount Calculator
Calculate 'What is X% of Y?', percentage increase/decrease, shopping discounts, and ratio conversions.
Universal Unit & Measurement Converter
Convert between units for Length, Weight, Temperature, Area, Volume, and Digital Storage instantly.
Tip, Bill & Expense Splitter
Split restaurant bills, calculate tip amounts by percentage, and determine exact per-person shares with ease.
Time Zone Meeting Planner & Converter
Compare multiple global time zones simultaneously to find overlapping working hours and schedule meetings.
Instant In-Browser Speed
Every tool executes directly inside your browser memory using HTML5 Canvas, Web Workers, and Web Crypto APIs for zero network lag.
100% Private & Secure
Your PDFs, photos, financial figures, and text are never uploaded to any server. Complete privacy and GDPR compliance by design.
100% Mobile Responsive
Optimized for mobile touchscreens, tablets, and desktop monitors with one-click clipboard copy and high-resolution file downloads.