All Free Online Tools
Every tool on EzzDo operates entirely in your browser. Select any utility below to start working immediately without registration or file uploads.
PDF Utilities
Merge, split, rotate, and manage PDF documents securely in your browser.
PDF Merge
Combine multiple PDF files into one single document securely in your browser.
PDF Split
Extract specific pages or page ranges from any PDF document.
PDF Rotate
Rotate individual or all pages of a PDF document permanently.
PDF Delete Pages
Quickly remove unwanted pages from any PDF document.
Image Processing
Compress, resize, convert, and inspect images without uploading to any server.
Image Resizer
Resize images to exact dimensions or scaling percentages with aspect ratio lock.
Image Format Converter
Convert images between PNG, JPEG, and WebP formats with quality control.
Image to Base64
Convert images to Base64 Data URIs or decode Base64 back into image files.
Color Picker from Image
Inspect and extract precise HEX, RGB, and HSL colors from any uploaded image.
Text Utilities
Count words, convert letter cases, clean duplicate lines, and format text fast.
Word Counter
Count words, characters, sentences, paragraphs, and reading/speaking times.
Case Converter
Convert text into UPPERCASE, lowercase, Title Case, camelCase, kebab-case, and snake_case.
Duplicate Line Remover
Clean lists by eliminating duplicate lines with case-sensitivity and whitespace trimming.
Text Sorter
Sort lines alphabetically, numerically, by length, or reversed.
Lorem Ipsum Generator
Generate customizable placeholder dummy text by paragraphs, sentences, or words.
Slug Generator
Convert article titles and headings into clean, URL-safe slugs.
URL Encoder / Decoder
Safely encode or decode special characters in URLs and query strings.
Base64 Encoder / Decoder
Encode plain text to Base64 or decode Base64 strings with full UTF-8 support.
Markdown Previewer
Real-time Markdown editor with live HTML preview and syntax formatting.
Developer Utilities
Format JSON, convert CSV, generate UUIDs, compute hashes, and inspect timestamps.
JSON Formatter & Validator
Beautify, format, validate, and minify JSON data with line-accurate error detection.
JSON to CSV & CSV to JSON
Bidirectional converter between JSON arrays and CSV tabular spreadsheets.
UUID / GUID Generator
Generate cryptographically secure UUID v4 identifiers in bulk.
Hash Generator
Generate SHA-1, SHA-256, SHA-512, and MD5 cryptographic hashes.
Unix Timestamp Converter
Convert between Unix timestamps (seconds/milliseconds) and human-readable dates.
Color Code Converter
Convert colors between HEX, RGB, HSL, and HSV color models.
QR Code Generator
Generate customizable, scannable QR codes for URLs, text, and Wi-Fi.
Calculators
Accurate financial, health, date difference, percentage, and conversion calculators.
Percentage Calculator
Calculate percentages of numbers, percentage increases/decreases, and relative ratios.
Age Calculator
Calculate exact age in years, months, days, hours, and find upcoming birthday dates.
BMI Calculator
Calculate Body Mass Index (metric & imperial) with WHO health category classifications.
Loan & EMI Calculator
Calculate monthly EMI, total interest, and total payment for loans and mortgages.
Discount Calculator
Calculate final discounted prices, total savings, and optional sales taxes.
Date Difference Calculator
Calculate exact days, weeks, months, and business days between two dates.
Unit Converter
Convert units of Length, Weight, Temperature, Area, Volume, and Digital Storage.
Tip & Bill Split Calculator
Calculate tip percentages, total bill amounts, and split payments evenly across groups.
Business & Productivity
Calculate ROI, profit margins, break-even points, and create secure passwords.
ROI Calculator
Calculate Return on Investment percentage, net profit, and annualized return.
Profit Margin Calculator
Calculate gross profit margin, net profit, and markup percentage from cost and revenue.
Break-Even Calculator
Calculate break-even units and revenue based on fixed costs and variable unit margins.
Random Password Generator
Generate cryptographically secure, random passwords with customizable entropy rules.
SEO & Webmaster
Generate meta tags, preview social cards, create robots.txt, and build UTM links.
Meta Tag Generator
Generate HTML title, description, canonical, Open Graph, and Twitter Cards tags.
Open Graph & Social Preview
Live visual preview of how web links appear in Google search, Facebook, and Twitter/X.
Robots.txt Generator
Generate standard robots.txt files for search engine crawlers with allow/disallow rules.
UTM Link Builder
Build tracked marketing URLs with campaign source, medium, name, and term parameters.
Keyword Density Checker
Analyze text client-side to calculate 1-word, 2-word, and 3-word keyword frequencies.