35 tools
Free online utilities from AabiTech
Free Online Tools
Use practical online tools for development, writing, design, calculations, security, date and time tasks, and other everyday digital work.
Browse Online Tools
Explore the available AabiTech tools by category, or search for the specific task you want to complete.
Developer Tools
15 tools
Free online developer tools for JSON, Base64, URL encoding, regex, HTML, JWT, and other everyday programming and web development tasks.
JSON to Pydantic Converter
Convert JSON data into Python Pydantic models with nested types, optional fields, and Pydantic v1 or v2 syntax.
Base64 Encoder & Decoder
Free online Base64 encoder and decoder with UTF-8 and URL-safe Base64 support. Encode text to Base64 or decode Base64 back to readable text directly in your browser.
URL Encoder & Decoder Online
Encode or decode URLs and URL components online. Fast, free, and easy-to-use URL encoding and decoding tool for developers.
JSON Formatter & Validator
Format, beautify, validate and minify JSON online. Free browser-based JSON formatter with error location, tree view and local processing.
Regex Tester
Test regular expressions against sample text online.
HTML Beautifier
Format, beautify, pretty print and minify HTML online with customizable indentation, wrapping and whitespace options.
JWT Decoder
Decode and inspect JSON Web Tokens online. View JWT headers, payload claims, timestamps and expiration status directly in your browser.
Tailwind CSS to Email-Safe Inline Style Converter
Convert Tailwind CSS HTML into email-friendly inline CSS with responsive rules and compatibility diagnostics.
Laravel .env Validator & Diff Checker
Validate Laravel .env files and compare two environment configurations to identify syntax issues, missing keys, and configuration changes.
SQL to Laravel Migration Converter
Convert SQL CREATE TABLE statements into Laravel migration code with schema, column, key, index, and constraint mappings for Laravel projects.
Bootstrap to Tailwind Converter Online
Convert Bootstrap 4 and Bootstrap 5 HTML classes to Tailwind CSS v3 and v4 utilities online for free. Includes React JSX className export, responsive grid diagnostics, spacing scale mappings, and a sandboxed live preview.
RAG Chunking Simulator & Visualizer
Compare RAG text chunking strategies, visualize chunk boundaries and overlap, inspect chunk sizes, estimate token usage and embedding costs, and export chunks for retrieval-augmented generation workflows.
Requirements.txt to pyproject.toml Converter
Convert Python requirements.txt dependencies into a pyproject.toml project configuration with build-system settings, project metadata, and dependency warnings.
Terraform & OpenTofu State Visualizer
Visualize Terraform (.tfstate) and OpenTofu state files online into interactive architecture diagrams, dependency graphs, Mermaid.js code, and Draw.io XML—100% client-side with automatic secret masking.
PromQL Query Builder & Explainer
Build Prometheus queries, explore common PromQL examples, explain query components, and review syntax diagnostics and common pitfalls in one browser-based workspace.
Text Tools
6 tools
Free online text tools for counting words and characters, removing duplicate lines, generating slugs, placeholder text, and everyday writing tasks.
Character Counter
Count characters, words, spaces, lines and more instantly. Check text length with or without spaces and stay within character limits.
Word Counter
Count words, characters, sentences, paragraphs and lines instantly. Track reading time and check your text against word limits with AabiTech's free online word counter.
Duplicate Line Remover
Remove duplicate lines from text instantly. Clean lists, keywords, URLs, emails and other line-based data while keeping unique entries.
Reading Time Calculator
Estimate reading time from text or word count. Choose your reading speed, see minutes and seconds, and check word, character, sentence and paragraph counts.
Slug Generator
Convert titles and text into clean, SEO-friendly URL slugs. Lowercase text, remove punctuation, handle accents, choose separators, and copy the result instantly.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text by words, sentences, paragraphs or list items. Copy clean text instantly for designs, websites and prototypes.
Design Tools
2 tools
Simple online design tools for aspect ratio calculations and CSS gradients, helping you create accurate dimensions and color effects quickly.
Aspect Ratio Calculator
Calculate aspect ratios, simplify width and height, and find missing dimensions for images, videos, screens and designs without changing their proportions.
CSS Gradient Generator
Create beautiful CSS gradients with live preview. Choose linear, radial, or conic gradients, customize colors and stops, adjust direction, and copy the CSS instantly.
Security Tools
1 tool
Free online security tools for checking password strength and handling common security-related tasks with simple, browser-based utilities.
Calculators & Generators
6 tools
Free online calculators for percentages, age, random numbers, and other quick calculations without installing software or using complex spreadsheets.
Percentage Calculator
Calculate percentages, percentage increase and decrease, percentage change, and find what percent one number is of another with AabiTech's free online percentage calculator.
Random Number Generator
Generate random numbers from any range. Choose multiple numbers, prevent repeats, sort results, and copy your random numbers instantly.
CGPA to Percentage Converter
Convert CGPA to percentage and percentage to CGPA using HEC reference tables or a linear scale.
Twitch Bits to USD Calculator
Convert Twitch Bits to USD and calculate the estimated streamer payout for any number of Bits using the standard $0.01 per Bit rate.
Tattoo Price Calculator
Estimate tattoo cost from size, placement, complexity, color, and artist pricing to get a realistic budget range before your tattoo appointment.
Construction Estimate Calculator
Estimate building and construction costs from project area, materials, labor, and other cost inputs to create a preliminary construction budget.
Date & Time Tools
3 tools
Free online date and time tools for Unix timestamps, timestamp conversion, and common time-related calculations for developers and everyday use.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and dates back to Unix time. Supports seconds and milliseconds with UTC, local time, and ISO 8601 output.
Age Calculator
Calculate your exact age in years, months and days from your date of birth. Find your age on any date, total days lived, and time until your next birthday with AabiTech's free age calculator.
Timestamp Converter
Convert timestamps to readable dates and dates to timestamps. Supports seconds and milliseconds with UTC, local time, and ISO 8601 formats.
1 tool
Fast, free online PDF tools by AabiTech. Merge, split, compress, lock/unlock, and convert PDF documents instantly in your browser with no watermarks.
Student Tools
1 tool
Useful online tools for students to study smarter and improve productivity.
Keep simple tasks on your device when possible.
Many AabiTech utilities are designed to process input directly in your browser. For supported tools, this can allow text, code, numbers and other information to be handled locally on your device.
Processing behavior can vary between utilities. Check the individual tool page for information about how that particular utility handles your data.
Runs locally when supported
Browser-based utilities can process your input directly on your device.
No unnecessary upload
Local processing can avoid sending input to a server when server processing is not required.
Find the right tool for your task
Browse the complete AabiTech collection or explore a category to discover more specialized utilities.