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// Hitechies Tools

Free tools for developers,
security & crypto

21 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
⚙️ 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.
🕐
Timestamp Converter

Convert Unix timestamps to readable dates and back. Seconds & milliseconds.
MD
Markdown → 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.
🔒 Security Tools Passwords, hashes & certificates
🛡️
Password Generator

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

Most popular
▦
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.
🔏
SSL Checker

Check SSL certificate validity, expiry date and issuer for any domain.
₿ Crypto Tools Trading, yields & conversions
📈
Crypto P&L Calculator

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

Any coin
₿
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
⛽
Gas Fee Estimator

Estimate Ethereum gas fees for swaps, transfers and contracts in USD and ETH.
⚡
Batch Token Sender

Send tokens to hundreds of wallets in one transaction. Airdrops, DAO payroll & distributions.

Earns fees
✦ 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.
🔍

No tools match your search

Free online tools for developers, security professionals and crypto traders

Hitechies Tools is a collection of 21 free browser-based utilities built for people who work with technology every day. Every tool runs entirely in your browser — 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 Batch Token Sender lets anyone send ETH or ERC-20 tokens to hundreds of wallets in a single transaction — replacing hundreds of individual transfers with one. Built for airdrops, DAO contributor payroll, and token distributions across Ethereum, Polygon, Arbitrum and BNB Chain.

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 tools are free with no signup, no usage limits, and no premium tier. The Batch Token Sender is free for up to 10 recipients — a 0.1% service fee applies above that.
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.