Why Bitcoin Is Down 37% From Its All-Time High β€” A Critical Analysis GPT-5.5 vs Claude Opus 4 β€” We Put Both Through Hell So You Don't Have To 10 Free Developer Tools That Don't Suck (and Actually Respect Your Time) $300 Billion in One Quarter β€” But Strip Out Four Companies and the Story Changes Completely TypeScript Hit Number One on GitHub. Now Comes the Hard Part. Rust Is Now in Half of All Enterprise Codebases β€” and the Language War Is the Wrong Thing to Watch The $10.5 Trillion Problem: Why AI Is Making Cybersecurity Simultaneously Better and Worse Ransomware Is Now a Franchise Business β€” And It's Growing Faster Than the Companies It Attacks DeFi Is Growing Up β€” And It's Not Nearly as Fun as It Used to Be Bitcoin ETFs Absorbed More Capital in 18 Months Than Gold ETFs Did in 15 Years
// Hitechies Tools

Free tools for developers,
security & crypto

20 browser-based tools. No signup. No data sent to servers. Everything runs locally in your browser.

No signup No data uploaded Works offline Free forever
βš™οΈ Developer Tools Format, convert & debug
{ }
JSON Formatter

Format, validate & beautify JSON. Fix syntax errors with line numbers.

Most used
B64
Base64 Encoder

Encode & decode Base64 text, files and images. URL-safe encoding supported.
JWT
JWT Decoder

Inspect JSON Web Tokens. View header, payload & expiry. Tokens never transmitted.

Private
.*
Regex Tester

Test regular expressions live with real-time match highlighting.
πŸ•
Timestamp Converter

Convert Unix timestamps to readable dates and back. Seconds & milliseconds.
MD
Markdown β†’ HTML

Convert Markdown to HTML with live preview. Supports GitHub-flavoured Markdown.
ID
UUID Generator

Generate UUIDs v1, v4 and v5 in bulk. One-click copy.
CSS
CSS Minifier

Minify CSS for production. Remove whitespace and comments. Shows compression ratio.
πŸ”’ Security Tools Passwords, hashes & certificates
πŸ›‘οΈ
Password Generator

Cryptographically secure passwords. Custom length, symbols and character sets.

Most popular
β–¦
QR Code Generator

Generate QR codes for URLs, WiFi, email & text. Download PNG. No watermarks.

Popular
SHA
Hash Generator

Generate MD5, SHA-1, SHA-256 & SHA-512. Verify file integrity instantly.
πŸ”
SSL Checker

Check SSL certificate validity, expiry date and issuer for any domain.
β‚Ώ Crypto Tools Trading, yields & conversions
πŸ“ˆ
Crypto P&L Calculator

Calculate profit & loss on any trade. Includes fees, ROI and break-even price.

Any coin
β‚Ώ
Satoshi Converter

Convert between Satoshi, mBTC, Bitcoin and USD with live prices.
🌊
DeFi APY Calculator

Calculate compound yields from DeFi protocols. Compare APY vs APR returns.

Unique
β›½
Gas Fee Estimator

Estimate Ethereum gas fees for swaps, transfers and contracts in USD and ETH.
✦ AI Tools Models, tokens & benchmarks
⚑
AI Benchmark Comparator

Compare GPT-5.5, Claude & Gemini across coding, reasoning and safety benchmarks.

No competitor
TOK
AI Token Counter

Count tokens for GPT-4, Claude & Gemini. Estimate API costs before you send.
🌐
IP Lookup

Find geolocation, ISP and threat intelligence for any IP address instantly.
πŸ”

No tools match your search

Free online tools for developers, security professionals and crypto traders

Hitechies Tools is a collection of 20 free browser-based utilities built for people who work with technology every day. Every tool runs entirely in your browser β€” no data is uploaded to any server, no account is required, and there are no usage limits.

The developer tools section covers the most common daily tasks: formatting and validating JSON, encoding and decoding Base64, inspecting JWT tokens, testing regular expressions, converting Unix timestamps, and generating UUIDs. The security tools include a cryptographically secure password generator using the Web Crypto API, a hash generator supporting MD5, SHA-256 and SHA-512, and an SSL certificate checker.

The crypto tools are built specifically for the Hitechies audience: a profit and loss calculator that works for Bitcoin, Ethereum, Solana and any other cryptocurrency, a Satoshi converter, a DeFi APY calculator, and an Ethereum gas fee estimator. The AI tools include a benchmark comparator for GPT-5.5, Claude and Gemini, and a token counter that estimates API costs before you send a request.

Frequently asked questions

Are these tools completely free?
Yes. All 20 tools are free with no signup, no usage limits, and no premium tier. Free forever.
Is my data safe?
Yes. Every tool runs in your browser. Your JSON, passwords, tokens and code never leave your device.
Do the tools work offline?
Yes. Once the page has loaded, all tools work without an internet connection.
Which tool is most popular?
The JSON Formatter and Password Generator are the most used tools. The JWT Decoder and Crypto P&L Calculator are popular with the Hitechies developer and crypto audience specifically.