███╗ ███╗███████╗ ██████╗ █████╗ ████████╗ ██████╗ ██████╗ ██╗ ███████╗ ████╗ ████║██╔════╝██╔════╝ ██╔══██╗╚══██╔══╝██╔═══██╗██╔═══██╗██║ ██╔════╝ ██╔████╔██║█████╗ ██║ ███╗███████║ ██║ ██║ ██║██║ ██║██║ ███████╗ ██║╚██╔╝██║██╔══╝ ██║ ██║██╔══██║ ██║ ██║ ██║██║ ██║██║ ╚════██║ ██║ ╚═╝ ██║███████╗╚██████╔╝██║ ██║ ██║ ╚██████╔╝╚██████╔╝███████╗███████║ ╚═╝ ╚═╝╚══════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ ╚═════╝ ╚══════╝╚══════╝
115+ Browser-Based Hacker & Dev Utilities
100% Client-Side. Zero server processing. Offline-ready cryptographic, media, and networking tools.
> QR Code Generator
Generate QR codes from text, URLs, or any data. Download as PNG instantly.
> JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting.
> Password Generator
Create strong, random passwords with custom length and character sets.
> UUID Generator
Generate UUID v4 identifiers instantly. One click to copy.
> Base64 Encode/Decode
Encode text to Base64 or decode Base64 back to readable text.
> Markdown Preview
Write Markdown and see the rendered HTML preview side by side. Supports both .md and .mdx formats.
> Image Compressor
Compress images right in your browser. No uploads, no servers.
> Text Diff Checker
Compare two texts and see the differences highlighted line by line.
> Hash Generator
Compute SHA-1, SHA-256, SHA-384, SHA-512 hashes from text instantly.
> JWT Decoder
Decode JWT header and payload, inspect claims, and check expiry — locally.
> Regex Tester
Test regular expressions live with match highlighting and capture groups.
> AES Encrypt/Decrypt
Encrypt or decrypt text with a passphrase using AES-GCM. Keys never leave your device.
> Timestamp Converter
Convert Unix timestamps to dates and back, with relative time and live epoch.
> URL Encoder/Decoder
Encode or decode URLs and query parameters safely. Component or full URI mode.
> Chmod Calculator
Compute file permissions from checkboxes or octal. Symbolic and numeric output.
> CIDR Calculator
IPv4 subnet calculator: network, broadcast, netmask, host range from CIDR notation.
> Text Transformer
Convert text case (camel, snake, kebab...) and encode/decode HTML entities.
> QR Scanner
Decode QR codes from image files right in your browser. No uploads.
> Merge PDF
Combine multiple PDF documents into a single file in your browser.
> Split PDF
Extract specific pages or page ranges from a PDF document.
> Image to PDF
Convert photos and images (PNG, JPG, WebP) into a multi-page PDF document.
> Image Converter
Convert image files between PNG, JPG, and WebP formats with quality control.
> EXIF & Metadata Stripper
Remove GPS coordinates, camera models, and private metadata from photos.
> Image Steganography
Hide secret encrypted text inside image pixels using LSB encoding, or extract it.
> CSV ↔ JSON Converter
Bidirectional converter between CSV tables and JSON arrays with auto-delimiter detection.
> YAML ↔ JSON Converter
Convert between YAML and JSON formats with live validation and line-number error reporting.
> Favicon & Icon Generator
Generate standard web and app icon sizes (16, 32, 48, 180, 192, 512px) with HTML snippet.
> Large File Hasher
Calculate SHA-256, SHA-512, SHA-384, and SHA-1 checksums for large files with chunking.
> Security Headers Generator
Generate hardened HTTP security headers (CSP, HSTS, CORS, X-Frame-Options) for Nginx, Vercel, Apache.
> Common Ports Reference
Database of standard & security-sensitive TCP/UDP ports with service info and vulnerability risk notes.
> Binary & Base Converter
Convert text and numbers between Binary, Hex, Base32, Base58 (Bitcoin/Solana), and Decimal.
> SSL / X.509 Certificate Inspector
Parse and inspect X.509 certificates and CSRs (PEM format) locally without sending keys anywhere.
> SQL Formatter & Beautifier
Format, beautify, and indent complex SQL queries in your browser. Supports PostgreSQL, MySQL, SQLite.
> HTML & CSS Minifier
Minify or beautify HTML and CSS code to optimize website load speeds and strip unnecessary bytes.
> Color Contrast & Palette
WCAG 2.1 contrast ratio checker (AA/AAA compliance) with instant HEX, RGB, HSL, and OKLCH conversions.
> SVG Optimizer & Cleaner
Clean and minify SVG vector files by stripping editor metadata, comments, and unused attributes.
> Screen & Audio Recorder
Record your screen, browser tab, or app window with microphone audio. 100% private, zero uploads.
> Audio Trimmer & Cutter
Visual waveform audio cutter for MP3, WAV, and OGG files. Trim audio clips client-side.
> cURL to Code Converter
Convert cURL commands into JavaScript fetch, Python requests, Axios, and Go code.
> Cron Expression Generator & Parser
Parse and explain crontab schedules in plain English and calculate upcoming execution dates.
> HTTP Status Codes & Headers Explorer
Instant searchable directory of HTTP status codes (1xx-5xx) and common request/response headers with RFC references.
> Keyboard Event & KeyCode Tester
Interactive keyboard event inspector. Inspect event.key, code, legacy keyCode, and modifiers live.
> JSON to TypeScript & Zod Schema
Convert JSON objects into TypeScript interfaces, types, and Zod validation schemas instantly.
> HTML / SVG to JSX Converter
Convert raw HTML and SVG into React and Next.js compatible JSX with camelCase attributes and style objects.
> String & Regex Escaper / Unescaper
Escape and unescape strings for JSON, JavaScript, SQL, Regular Expressions, Shell, and HTML.
> CSS Glassmorphism & Shadow Generator
Interactive visual generator for modern CSS Glassmorphism, Box Shadows / Glow, and Gradients.
> HMAC Hash & Signature Generator
Compute keyed-hash message authentication codes (HMAC) client-side for API auth & webhook verification.
> RSA & ECDSA Key Pair Generator
Generate asymmetric encryption & signing key pairs in standard PEM format (PKCS#8 / SPKI).
> Password Entropy & Strength Analyzer
Evaluate password complexity, Shannon entropy bits, and brute-force cracking resistance.
> SVG to PNG / JPG / WebP Converter
Convert and upscale SVG vector files to PNG, JPG, and WebP at 1x, 2x, 4x resolutions.
> Image Color Palette Extractor
Extract dominant color palettes, HEX/RGB/HSL values, and CSS theme variables from any image.
> OpenGraph & Social Meta Tag Previewer
Preview social share cards for Google, Twitter/X, Discord, Facebook, and generate HTML & Next.js metadata tags.
> IPv6 & Subnet Calculator
Calculate IPv6 subnets, expand/compress addresses, compute reverse DNS ip6.arpa, and inspect address scopes.
> Docker Run to Docker Compose Converter
Convert docker run CLI commands into clean, production-ready docker-compose.yml configuration files.
> JSON to JSON Schema Generator
Instantly generate Draft-07 and 2020-12 JSON Schema validation schemas from JSON sample data.
> Markdown Table Generator & Editor
Interactive visual matrix table editor for generating Markdown, HTML, and LaTeX tables in real-time.
> Bcrypt Hash Generator & Verifier
Generate secure Bcrypt password hashes ($2b$) and verify plaintext passwords against existing hashes.
> Browser & Device Inspector
Inspect browser hardware concurrency, GPU WebGL renderer, display DPI, network status, and battery level.
> SPF, DKIM & DMARC DNS Record Generator
Generate compliant DNS TXT records for SPF, DKIM, and DMARC email authentication and anti-spoofing.
> Subresource Integrity (SRI) Hash Generator
Generate W3C Subresource Integrity (SRI) hashes (SHA-384, SHA-256, SHA-512) for CDN scripts and styles.
> TOTP 2FA Authenticator Simulator
Generate standard 6-digit Time-Based One-Time Passwords (RFC 6238) from Base32 secret keys or otpauth:// URIs.
> ASCII Art & Terminal Banner Generator
Convert text into stylish ASCII art FIGlet fonts and transform uploaded images into ASCII character art.
> CSS Clip-Path & Polygon Shape Generator
Interactive visual drag-and-drop CSS clip-path polygon generator with presets for hexagons, stars, and chevrons.
> Aspect Ratio & Resolution Calculator
Calculate aspect ratios (16:9, 4:3, 21:9), scale pixel dimensions proportionally, and find GCD reductions.
> Base58, Base32 & Base85 Multi-Converter
Encode and decode text and hex strings using Base58 (Bitcoin / IPFS), Base32 (RFC 4648), and Z85 algorithms.
> Ethereum Unit & Gas Fee Calculator
Convert high-precision values between Wei, Gwei, Finney, and Ether with EIP-1559 gas fee estimation.
> EIP-55 Ethereum Address Checksum & Validator
Verify EVM wallet addresses and encode lowercase strings to official EIP-55 mixed-case checksum format.
> Solana SOL / Lamports Converter & Inspector
Convert between SOL and Lamports ($10^9$), calculate account rent fees, and decode Ed25519 public keys.
> Keccak-256 & 4-Byte Selector Calculator
Calculate Ethereum Keccak-256 hashes, Solidity 4-byte function selectors, and EVM event topics.
> Merkle Tree Root & Proof Builder
Generate cryptographic Merkle roots and OpenZeppelin-compatible verification proofs for airdrops and whitelists.
> AI Model Pricing & Context Matrix
Real-time cost calculator and specs matrix for 25+ LLM models with models.dev live sync support.
> Universal AI Payload & SDK Exporter
Convert system prompts and parameters into official JSON payloads for OpenAI, Claude, Gemini, and Ollama.
> Vector Cosine Similarity & Distance Engine
Calculate Cosine Similarity, Dot Product, Euclidean (L2), and Manhattan (L1) metrics for AI embeddings.
> Secret & API Key Leak Scanner
Detect leaked API keys, tokens, database credentials, and high-entropy secrets client-side with 1-click auto-masking.
> Pwned Password & Data Breach Checker
Check if your password has been exposed in billions of leaked records using mathematical k-Anonymity privacy.
> WebRTC IP Leak & VPN Shield Tester
Detect if your real public or local IP address leaks through WebRTC STUN requests even while using a VPN or proxy.
> DNS over HTTPS (DoH) Lookup & Records Inspector
Query A, AAAA, MX, TXT, CNAME, NS, and SOA records directly from Cloudflare and Google DoH resolvers.
> RAG Document Chunker & Overlap Visualizer
Partition documents into optimized semantic chunks with configurable size, overlap, and vector database export.
> Structured System Prompt Architect
Engineer production-grade, anti-hallucination XML/Markdown system prompts with role constraints and few-shot examples.
> PDF Page Rotator & Reorder Grid
Reorder pages, rotate orientations (90°/180°/270°), and delete unwanted pages visually with in-browser compilation.
> BIP-39 Mnemonic Seed Phrase Studio
Generate cryptographically secure 12 & 24-word seed phrases, verify checksums, and derive PBKDF2 512-bit binary seeds.
> Base64 Data URL & Asset Embedder
Convert images, fonts, SVGs, and files into inline Base64 Data URLs, CSS background snippets, and HTML tags.
> RDAP Domain & IP Registration Inspector
Query authoritative domain registration, expiration dates, status flags, and IP ownership via ICANN's RESTful RDAP protocol.
> Web Audio Tone & Frequency Synthesizer
Generate pure acoustic frequencies (20Hz - 20kHz), binaural beats, and colored noise (white, pink, brown) with a live oscilloscope.
> PDF Watermark & Stamp Studio
Stamp diagonal or centered watermarks ('CONFIDENTIAL', 'DRAFT') across PDF pages with custom opacity, color, and angle.
> LLM Token Counter & API Cost Estimator
Analyze token density, preview subword BPE boundaries, and calculate real-time API inference costs across OpenAI, Claude, Gemini, and DeepSeek.
> Few-Shot Prompt & Fine-Tuning Dataset Formatter
Construct, validate, and convert few-shot prompt examples into OpenAI JSONL, Anthropic XML, ChatML, and Llama 3 templates.
> LLM Output Diff & Hallucination Spotter
Compare AI model outputs side-by-side with word-level diff, numerical discrepancy analysis, and hallucination detection.
> Content Security Policy (CSP) Builder & Analyzer
Construct, analyze, and test hardened Content Security Policy (CSP) headers with cryptographic nonces and security audit.
> HAR File Viewer & Network Waterfall Analyzer
Inspect HTTP Archive (.har) logs with visual waterfall timelines, TTFB metrics, SSL/DNS timings, and request headers.
> User-Agent String Parser & Client Hints Inspector
Parse User-Agent strings to detect browser versions, OS architecture, device models, and AI search crawler bots.
> Robots.txt Generator & URL Match Tester
Construct standard robots.txt files with AI bot blocking (GPTBot, ClaudeBot), crawl delays, and live URL matching simulation.
> JSON to CSV / TSV Converter & Table Exporter
Convert JSON arrays and nested structures into clean CSV, TSV, or interactive data grids with automatic key flattening.
> Regex Visual Explainer & AST Token Breakdown
Deconstruct regular expressions into clear plain-English token explanations, lookarounds, capture groups, and quantifier breakdowns.
> Crontab Schedule Visualizer & Next 20 Executions Calendar
Simulate cron schedules, calculate next 20 upcoming execution timestamps in local/UTC time, and visualize active hours heatmap.
> GraphQL Query Beautifier & AST Inspector
Format, prettify, minify, and extract variables or operation AST metrics from GraphQL queries and mutations.
> OpenAPI to TypeScript & Zod
Generate TypeScript interfaces or Zod schemas from OpenAPI component definitions entirely in your browser.
> Environment File Editor & Sanitizer
Inspect, sanitize, and export .env variables locally without sending secrets anywhere.
> Gitignore Generator
Compose a project-ready .gitignore from popular language, framework, OS, and editor presets.
> JSONL Analyzer & Schema Inspector
Inspect JSON Lines validity, field coverage, and clean valid output in-browser.
> HTTP Request Builder
Build one HTTP request and export it as cURL, fetch, Axios, or Python requests code.
> Color Converter & Palette Studio
Convert HEX colors to RGB and HSL, preview swatches, and copy CSS values.
> Image Cropper & Resizer
Resize, rotate, and export images locally using the browser Canvas API.
> LLM JSON Repair & Auto-Fixer
Auto-fix broken, truncated, and malformed JSON from AI prompts. Fixes quotes, trailing commas, and brackets in-browser.
> PDF Metadata Editor & Sanitizer
Inspect, modify, or 1-click strip all metadata (Title, Author, Subject, Creator) from PDF files in browser RAM.
> Semantic Versioning Calculator & Range Tester
Evaluate SemVer 2.0 ranges, simulate Major/Minor/Patch bumps, and sort multi-version releases in browser RAM.
> EVM Calldata Decoder & ABI Inspector
Decode raw Ethereum & EVM transaction calldata hex into human-readable parameters and 32-byte word slices.
> SQL DDL to TypeScript & Zod Schema
Convert SQL CREATE TABLE statements (PostgreSQL, MySQL, SQLite) into TypeScript interfaces, types, and Zod schemas.
> HAR File Sanitizer & Credential Stripper
Scrub cookies, bearer tokens, API keys, passwords, and sensitive headers from HTTP Archive (.har) logs 100% client-side.
> AI Prompt PII Redactor & Secret Masker
Detect and mask confidential PII (NIK, NPWP, credit cards, emails) and secrets (API keys, passwords, JWTs) before pasting to AI, with reversible de-anonymization.
> Docker Compose Visualizer & Security Linter
Parse docker-compose.yml files, visualize service topologies, networks, ports, and volumes, audit security risks, and auto-generate 1-click hardened YAML.
> Prompt Injection & LLM Guardrail Fuzzer
Stress-test LLM system prompts against jailbreaks, delimiter hijacking, prompt leaks, and generate 1-click fortified guardrails.
> Distributed Cron Collision & Thundering Herd Analyzer
Detect thundering herd spikes, simulate 24h multi-cron concurrency heatmaps, and optimize schedule offsets with 1-click jittering.
> Solidity Storage Layout & Gas Packing Optimizer
Visualize EVM 32-byte storage slots, simulate struct and variable packing, eliminate wasted padding bytes, and optimize SSTORE gas costs with 1-click bin-packing.
> EIP-712 Permit & Phishing Signature Deconstructor
Deconstruct EIP-712 typed data messages, decode Permit & Permit2 signatures, detect infinite allowance wallet drainer scams, and verify secp256k1 signers 100% client-side.
100% In-Browser Execution
Data, files, keys, and tokens are processed in browser memory and never hit any external API.
WebAssembly & Native APIs
Harnesses Web Crypto, Canvas 2D, Web Audio, and Intl for near-instant execution speed.
Auditable & Transparent
Strict client-side architecture without tracking cookies, intrusive analytics, or storage sync.