One platform.
80 Professional Tools. Zero installation.
High-performance developer, security, AI, formatting, and mathematical utilities running natively in your browser with sub-millisecond local execution.
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Everything stays on your device< 1ms Latency
Instantaneous computation80 Tools Active
Across 12 core domains100% Free
No account or API keys requiredPopular Utilities
Most frequently used developer and productivity utilities
JSON Formatter & Validator
Format, validate, repair, and minify JSON data instantly.
JWT Decoder & Inspector
Decode, verify claims, inspect headers, and check token expiry.
IPv4 Subnet & Host Range Calculator
Calculate network address, broadcast, usable host ranges, and binary masks.
Linux File Permissions & Chmod Calculator
Calculate 755, 644 octal and symbolic file permissions with commands.
Interactive Git Commands & Undo Recipes
Generate commands to undo commits, switch branches, stash, and squash.
Dockerfile & Containerfile Generator
Generate production-ready Dockerfiles for Node, Python, Go, Rust, and Nginx.
JSON Deep Structure Diff
Compare two JSON documents with structural hierarchy diffs.
Regular Expression (RegEx) Tester
Test regex patterns with flags, group captures, and live matches.
Code & Text Diff Checker
Compare text or source code side-by-side with visual diffs.
cURL Command to Code Converter
Convert cURL commands to JavaScript Fetch, Axios, Python, and Go.
YAML ↔ JSON Converter
Bi-directional YAML to JSON and JSON to YAML parser.
JSON to TypeScript Interface Generator
Generate TypeScript types and interfaces from JSON payloads.
AI Few-Shot Prompt & Dataset Builder
Build structured few-shot examples for Claude XML and OpenAI JSONL.
AI Prompt Engineering & Refiner Studio
Design, refine, and structure prompts for Claude, GPT-4, and Gemini.
AI JSON Schema & Tool Definition Studio
Generate OpenAI Function Calling and JSON Schema from payloads.
RAG Text Chunking & Semantic Splitter
Simulate document chunking strategies for vector embeddings and RAG.
AI Token Counter & Cost Calculator
Estimate token count and API costs for Claude 3.7, GPT-4o, and Gemini 2.0.
Shamir's Secret Sharing (SSS) Splitter & Reconstructor
Split master passwords into M-of-N threshold shares with GF(256) math.
BIP-39 Mnemonic Seed Phrase Generator
Generate cryptographically secure 12, 18, or 24-word seed phrases.
IPv4 Subnet & CIDR Calculator
Calculate network address, broadcast, usable host IP range, and masks.
PBKDF2 Cryptographic Key Derivation Studio
Derive secure keys with customizable iterations, salts, and SHA hashes.
Password Strength & Entropy Analyzer
Calculate Shannon entropy bits and GPU crack time estimations.
X.509 Certificate & PEM Inspector
Decode PEM headers, public keys, and certificate structures.
Content Security Policy (CSP) Builder
Construct and validate HTTP CSP headers and meta tags.
Apache .htaccess & Nginx Redirect Builder
Generate 301 redirects, force HTTPS, non-www, and cache headers.
Social Meta Tags & OpenGraph Studio
Generate OpenGraph and Twitter Card meta tags with live previews.
JSON-LD Schema.org Structured Data Generator
Create rich snippet JSON-LD for Articles, Organizations, FAQs, and Products.
XML Sitemap Generator & Builder
Create search-engine compliant XML sitemaps with priorities and dates.
PDF Combiner & Merger
Combine multiple PDF documents into a single document locally.
Image to PDF Converter
Convert PNG, JPEG, and WebP images to multi-page PDF documents.
PDF Metadata & Security Inspector
Inspect PDF version, encryption, page counts, and metadata privately.
Network Bitrate & File Transfer Duration Calculator
Calculate exact file download & transfer times across bandwidth speeds.
Data Storage & Memory Unit Converter
Convert Bytes, KB, MB, GB, TB, PB with binary vs decimal bases.
CSV ↔ JSON Converter
Convert CSV to JSON and JSON to CSV with custom delimiters and exports.
Base64 Encoder / Decoder
Encode plain text to Base64 or decode Base64 back to text.
RegEx Find & Replace Substitution Studio
Perform regex find & replace with capture groups ($1, $2) and flag controls.
Text Sanitizer & White Space Cleaner
Strip non-ASCII, collapse spaces, remove trailing, and fix smart quotes.
Word & Character Counter
Live statistics: words, characters, sentences, paragraphs, and reading time.
Morse Code Translator & Audio Synthesizer
Translate text to Morse code and play real-time audio beeps.
List Sorter & Deduplicator
Sort alphabetical, natural numeric, deduplicate, and clean lists.
Image Converter & Compressor
Convert and compress WebP, PNG, and JPEG images locally.
Circular / Avatar Image Cropper
Crop images into round avatar circles with zoom and transparency.
Favicon & Web App Icon Generator
Generate multi-size web, Apple Touch, and Android PWA favicons.
RFC 9562 UUID v7 Generator & Inspector
Generate time-ordered monotonic UUID v7 identifiers with timestamps.
Secure Password Generator
Generate cryptographically secure random passwords and passphrases.
Luhn Algorithm & Card Checksum Validator
Validate payment card numbers and identify issuers offline.
QR Code Studio & Generator
Create custom QR codes with custom colors, dimensions, and PNG export.
CSS Box Shadow & Neu-morphic Studio
Design multi-layer CSS box shadows with blur, spread, and inset.
Color Converter & Contrast Checker
Convert between HEX, RGB, HSL and test WCAG 2.1 contrast ratios.
CSS Linear & Radial Gradient Studio
Design multi-stop CSS gradients with angles and live visual preview.
Harmonious Color Palette Generator
Generate monochromatic, complementary, analogous, and triadic palettes.
World Timezone & Date Difference Calculator
Convert times across world timezones and compute exact business days.
Visual Cron Expression Builder & Explainer
Construct crontab schedules with human-readable English explanations.
SIP & Dollar-Cost Averaging (DCA) Investment Calculator
Forecast compounding wealth creation from monthly recurring investments.
Inflation & Purchasing Power Calculator
Calculate future equivalent costs and cash purchasing power erosion.
Hourly Wage & Salary Take-Home Calculator
Convert hourly rate, weekly paycheck, monthly earnings, and annual salary.
Compound Interest & Investment Calculator
Calculate future investment value with recurring contributions.
Trip Fuel & Commute Cost Calculator
Calculate fuel volume, trip expenses, and split costs per person.
Bandwidth & Data Transfer Calculator
Calculate download and upload duration for any file size and speed.
Discount & Sales Tax / VAT Calculator
Calculate final prices, coupon savings, and sales tax or VAT.
Loan EMI & Mortgage Calculator
Calculate monthly payments, total interest, and amortization schedule.
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Organized across 12 core developer and productivity domains