Tech : 443
privacy-first developer toolkit

Developer utilities that never touch your data

Tech443 is a fast, ad-light utility hub for developers, testers, and cybersecurity professionals. Hash generators, encoders, formatters, and converters — all running 100% in your browser. No accounts, no storage, no tracking.

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Developer Tools & Utilities

Pick a tool and go. Each one is self-contained, instant, and runs entirely on your machine.

#Password & Hash Tools2

Hash Generator

Generate secure cryptographic hashes (MD5, SHA-1, SHA-256) for data integrity verification and security testing.

/hash-generator

Random Password Generator

Create strong, customizable passwords with configurable length and character sets for enhanced account security.

/random-password-generator

#Data Conversion Tools2

CSV to JSON Converter

Transform CSV data into JSON format instantly. Perfect for API development, data migration, and web applications.

/csv-to-json

Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 strings. Essential for data transmission and binary-to-text conversion.

/base64

#Formatting & Utility Tools4

JSON Formatter & Validator

Beautify, validate, and format JSON data with syntax highlighting. Ideal for debugging and data visualization.

/json-formatter

JSON Diff Checker

Compare two JSON documents side by side. Instantly highlight added, removed, and changed values — perfect for API debugging and config review.

/json-diff

File & Text Diff Checker

Compare two text files or blocks of text line by line. Highlight added, removed, and changed lines — ideal for config review, log analysis, and code review.

/file-diff

Timestamp to Date Converter

Convert Unix timestamps to human-readable dates and vice versa. Essential for log analysis and time-based data.

/timestamp-converter

#Security & Testing1

API Security Testing Tool

Probe API endpoints for common security misconfigurations and response issues, right from your browser.

/api-security-testing-tool

why tech443

Built for people who care about privacy

Free & Hassle-Free

All tools are completely free to use with no hidden costs or premium tiers.

No Tracking or Data Collection

Your privacy is our priority. Every tool runs in your browser — nothing is stored or sent.

Instant Access — No Sign-Up

Start using our tools immediately without creating accounts or providing personal information.

Reliable and Responsive

Built for professionals with fast, reliable performance across all devices and browsers.

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