All Developer Tools. Zero Uploads. 100% Private.
Format JSON, inspect payloads, test regex, compare text, and handle everyday developer workflows without uploading files, tokens, or snippets to a backend.
Your files, tokens, configs, and payloads stay in the browser.
Formatting, validation, and conversion happen on-device, not on our servers.
Each utility has its own landing page for faster reuse, linking, and search visibility.
Privacy-First Developer Tool Ecosystem
Every tool runs 100% in your browser. No uploads, no tracking, no server-side processing. Explore by category.
JWT & Authentication Tools
Inspect, generate, and validate JSON Web Tokens without uploading secrets to third-party services.
Privacy-First Security Tools
Scan for leaked secrets, generate secure passwords, and verify hashes — all without uploading sensitive data.
Docker & DevOps Utilities
Convert Docker commands, validate YAML configs, schedule cron jobs, and manage environment files locally.
Configuration & ENV Tools
Format, validate, and convert environment configuration files without exposing database credentials or API keys.
Code Formatters & Validators
Beautify, validate, and minify code locally. Format JSON, HTML, SQL, CSS, and JavaScript without exposing source code.
Common developer tool chains
Combine multiple tools in sequence for end-to-end workflows — all running locally in your browser.
JWT Security Workflow
Inspect, validate, and generate JSON Web Tokens safely.
Docker Deployment Pipeline
Convert, validate, and configure Docker deployments end-to-end.
Security Audit Workflow
Scan, anonymize, and strip sensitive metadata from files.
Browse All Tools
JSON Formatter
Format and validate JSON instantly with no uploads, no server calls, and no stored data.
JSON Validator
Validate JSON instantly before deploys with local processing and zero server calls.
YAML Validator
Validate YAML files and catch indentation errors instantly with no uploads or backend processing.
Base64 Encoder
Encode or decode Base64 strings instantly with zero uploads.
URL Encoder
Encode and decode query parameters locally for APIs, redirects, and forms.
HTML Formatter
Pretty-print messy markup and inspect structure without exposing page code.
CSS Minifier
Shrink stylesheets for production with browser-only processing and instant output.
JavaScript Beautifier
Reformat dense JavaScript into readable code locally for debugging.
Cron Job Generator
Build cron expressions visually and copy production-ready schedules without trial and error.
JWT Debugger
Inspect JWT headers and payloads locally without leaking tokens to third-party tools.
Regex Tester
Test regex patterns instantly in-browser with no uploads, no logging, and immediate match feedback.
Diff Checker
Compare text side by side without pasting private content into a cloud diff service.
Timestamp Converter
Convert Unix timestamps to readable dates and back with zero data upload.
HEX to RGB
Translate color values between HEX and RGB instantly for design handoff.
Markdown to HTML
Preview rendered HTML output from Markdown directly in your browser.
SQL Formatter
Format and beautify SQL queries entirely in your browser. No database schema uploaded.
CSV to JSON Converter
Convert sensitive CSV files to JSON securely in your browser. Handles large files with zero upload.
Hash Generator (Bcrypt/SHA)
Generate Bcrypt, SHA-256, and MD5 hashes locally. Never send passwords over the network.
UUID / GUID Generator
Generate secure UUIDs (v4) instantly in your browser. Perfect for database seeding.
JSON to TypeScript
Generate TypeScript interfaces from JSON API responses locally and securely.
Password Generator
Generate cryptographically secure passwords in your browser. No passwords are transmitted or stored anywhere.
Password Strength Checker
Check how strong your password is locally — entropy analysis, time-to-crack estimate, and zero data upload.
Lorem Ipsum Generator
Generate placeholder text instantly for mockups and wireframes. Runs locally with no server calls.
Case Converter
Convert text between camelCase, snake_case, PascalCase, kebab-case, and more — instantly in your browser.
Word & Character Counter
Count words, characters, sentences, and paragraphs in real time with reading time estimates. No data uploaded.
Email Extractor
Extract and deduplicate email addresses from any text block locally. No data leaves your browser.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal bases instantly in your browser.
JWT Generator
Create test JWT tokens with custom headers and payloads locally. Sign with HMAC-SHA256 using Web Crypto API.
QR Code Generator
Generate QR codes from any text or URL entirely in your browser. Download as SVG or PNG with zero tracking.
QR Code Decoder
Decode QR codes from uploaded images locally in your browser. No image data is sent to any server.
Secret Scanner
Scan code and config files for leaked API keys, tokens, and secrets — entirely in your browser with zero uploads.
HTTP Header Analyzer
Parse and analyze HTTP response headers for security issues. Check CSP, HSTS, and more — locally in your browser.
EXIF Metadata Remover
Strip GPS and camera data from images locally in your browser. No uploads, 100% private.
JSONL to JSON Converter
Convert JSON Lines (JSONL) files to standard JSON arrays instantly. Runs 100% locally in your browser.
Docker Run to Compose Converter
Convert docker run commands into docker-compose.yml files instantly. Runs completely locally in your browser.
ENV File Formatter
Format, sort, and align your .env files instantly. Runs 100% locally in your browser to keep your secrets safe.
Log File Anonymizer
Strip IPs, emails, API keys, and other PII from server logs. Regex-based scrubbing runs entirely in your browser.
JWT Expiry Checker
Paste a JWT and instantly see when it expires in your local timezone. No server, no uploads.
Chmod Calculator
Visual Linux file permissions calculator with numeric mode, symbolic notation, and common presets.
CORS Header Generator
Generate CORS headers for Nginx, Apache, and Express.js with a visual builder. No data uploaded.
Bcrypt Hash Verifier
Verify bcrypt password hashes and generate new ones entirely in your browser. Your passwords never leave your machine.
Chown Command Generator
Generate Linux chown commands visually to change file and directory ownership. Set user, group, and flags — 100% browser-based.
ENV to JSON Converter
Convert .env files to JSON and JSON to .env format instantly. Bidirectional conversion runs 100% in your browser.
CORS Tester
Test CORS headers on any API endpoint directly from your browser. Simulate cross-origin requests and get fix recommendations.
JWT Signature Verifier
Verify JWT signatures locally using Web Crypto API. Supports HS256, RS256, and ES256. Your secrets never leave your browser.
Docker Compose Validator
Validate and lint docker-compose.yml files in your browser. Detect unquoted ports, missing images, broken services, and YAML syntax issues locally.
JSON Schema Validator
Validate JSON data against a JSON Schema locally in your browser. Powered by Ajv with format support. 100% private.
Systemd Service Generator
Generate Linux systemd service unit files visually. Configure ExecStart, restart policies, and dependencies — 100% browser-based.
Docker Compose env_file Mapper
Convert .env files to Docker Compose YAML environment blocks. Array, dictionary, and variable substitution formats — 100% in your browser.
Nginx Config Generator
Generate Nginx server block configurations visually. Reverse proxy, SSL, gzip, and security headers — 100% browser-based.
SSH Config Generator
Build SSH config file entries visually. Host aliases, identity files, jump hosts, and port forwarding — 100% browser-based.
HMAC Generator & Verifier
Generate and verify HMAC signatures with SHA-256, SHA-384, SHA-512 using Web Crypto API. Hex and Base64 output — 100% in your browser.
Connection String Parser
Parse and build PostgreSQL, MySQL, MongoDB, Redis, and JDBC connection strings locally. Extract components and generate code snippets — 100% browser-based.
Docker Compose Diff Tool
Compare two docker-compose.yml files side by side. Detect service changes, image upgrades, port and environment differences — 100% browser-based.
Kubernetes ConfigMap Generator
Generate Kubernetes ConfigMap YAML manifests visually. Import from .env or JSON, add key-value pairs — 100% browser-based.
Kubernetes Secret Generator
Build Kubernetes Secret YAML with automatic Base64 encoding. Supports Opaque, Docker registry, TLS, and basic-auth types — 100% in your browser.
Ansible Inventory Generator
Build Ansible inventory files visually in INI or YAML format. Add groups, hosts, and variables — 100% browser-based, no uploads.
JSON to JSON Schema
Generate JSON Schema Draft-07 definitions from any JSON object automatically. Types, nested objects, arrays, and format detection — 100% browser-based.
Crontab Translator
Translate cron expressions to plain English instantly. See the next 5 scheduled run times in your local timezone. Supports wildcards, ranges, steps, and @shortcuts — 100% browser-based.
SSH Key Generator
Generate RSA 2048-bit or 4096-bit SSH key pairs in your browser. Private key in PKCS#8 PEM format, public key in OpenSSH authorized_keys format — 100% browser-based, zero uploads.
JWK & JWKS Generator
Generate JSON Web Keys (JWK) and JWKS for JWT signing. Supports RS256, RS384, RS512, ES256, ES384, ES512, HS256 — 100% browser-based via Web Crypto API.
SSH Command Builder
Build SSH connection commands visually with port forwarding tunnels, identity keys, jump hosts, and advanced options — 100% browser-based.
Nginx Rewrite Rule Generator
Generate Nginx rewrite and redirect rules visually. Configure path matching, regex patterns, flags, and condition checks locally.
Systemd Timer Generator
Generate Linux systemd .timer and .service unit files visually. Modern crontab scheduler replacement — 100% browser-based.
JSON Schema to TypeScript
Convert JSON Schema Draft definitions into TypeScript interfaces instantly. Local browser-only parsing, zero data uploads.
Quick answers before you paste anything
Developer tools only earn trust when the privacy model is obvious. Here are the short answers most people want first.
- Is my data stored?
No. Inputs are processed in your browser and are not uploaded to our servers. Try it yourself with the JSON Formatter — check your Network tab and see zero requests.
- Does it work offline?
After the page loads, the actual formatting and conversion logic runs locally, so many workflows continue without server round-trips. Tools like the Base64 Encoder work fully offline.
- Is it free?
Yes. All tools — from the JSON Formatter to the URL Encoder — are free to use with no limits, no premium tier, and no sign-up.
- Do I need an account?
No login is required. Open any tool, paste your content, and work immediately. Start with JSON Formatter →