All Free Tools Directory

Browse over 500 online calculators, converters, and utilities

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CSV to JSON Converter

Convert CSV tabular data into structured JSON objects or arrays with custom delimiters.
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JSON to CSV Converter

Convert JSON arrays of objects into downloadable CSV spreadsheet tables.
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XML Formatter & Beautifier

Format and indent XML documents with proper syntax structure.
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HTML Minifier

Minify HTML markup by stripping comments, redundant spaces, and line breaks to boost page load speed.
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CSS Minifier

Minify CSS stylesheets by stripping whitespace, comments, and optimizing rules.
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JavaScript Minifier

Minify JavaScript code by removing comments, whitespace, and formatting for faster execution.
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SQL Formatter & Beautifier

Beautify SQL queries with standard uppercase keywords, clean line breaks, and indentation.
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Regular Expression (Regex) Tester

Test and evaluate regular expressions in real-time with pattern highlighting, flags, and group capture.
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Crontab Generator & Explainer

Build crontab scheduling expressions with clear human-readable explanations.
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UUID / GUID v4 Generator

Generate cryptographically secure RFC 4122 Version 4 random UUIDs in bulk or individually.
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JWT Token Decoder

Decode JSON Web Tokens (JWT) into readable Header, Payload claims, and signature information.
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Markdown to HTML Converter

Convert Markdown text into formatted HTML with instant live visual rendering.
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SEO Meta Tag Generator

Generate complete SEO title, meta description, keywords, robots, Open Graph, and Twitter tags.
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Robots.txt Generator

Create customized robots.txt files for search engine crawlers (Googlebot, Bingbot, etc.).
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UTM Campaign URL Builder

Create trackable Google Analytics UTM URLs with campaign source, medium, campaign name, term, and content.
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Random Password Generator

Generate strong, randomized, cryptographically secure passwords with custom length and character sets.
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Password Strength & Entropy Checker

Test password complexity, calculate bits of entropy, and estimate brute-force cracking time.
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Hash Generator (MD5, SHA-1, SHA-256, SHA-512)

Generate cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512) for any text in real-time.
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HEX to RGB Color Converter

Convert 6-digit or 3-digit HEX color codes into RGB and RGBA CSS values.
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RGB to HEX Color Converter

Convert Red, Green, Blue color values (0-255) into standard CSS HEX string.
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CSS Gradient Generator

Create beautiful linear and radial CSS gradients with live visual preview and copyable CSS rules.
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CSS Box Shadow Generator

Design smooth CSS box-shadow effects with X/Y offsets, blur radius, spread, and inset toggle.
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CSS Border Radius Generator

Interactive 4-corner and 8-value CSS border radius builder with live shape preview.
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Aspect Ratio Calculator

Calculate 16:9, 4:3, 1:1, or custom aspect ratio dimensions for images, screens, and video.