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Devutilites
v 0.9.0
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AI
Prompt Template Studio & Test Bench
Token Counter
Vector & Embedding Similarity Studio
LLM Structured Outputs & Strict JSON Schema Studio
AI & LLM Multi-Model Pricing Calculator
RAG Chunking & Overlap Visualizer Studio
Git
Git Command Generator
Git Command Builder
.gitignore Generator
Git Branching Simulator
Conventional Commit Generator
Database
Connection String Parser
SQL Formatter
SQL DDL to ORM Converter
Database Schema Builder
Elasticsearch Query Builder
SQL Query Optimizer
SQL Playground
SQL Schema Diff
SQLite Database Browser
Math
Base Converter
Calculator
Random Number Generator
Base Calculator
Bitwise Calculator
Big Number
Percentage Calculator
Date Difference Calculator
Images
Base64 Image Encoder
Image Converter & Compressor
Frontend
Multi-Platform App Icon Packager
Color, OKLCH & Palette Studio
Box Shadow Generator
Flexbox Generator
Grid Generator
Gradient Generator
Animation Builder
Contrast Checker
Accessible Palette
Clip Path Maker
Tailwind v4 Theme Generator
SVG Editor & Optimizer
CSS Glassmorphism Generator
Fancy Border Radius Playground
Color Blindness Simulator
CSS to Tailwind Converter
CSS Specificity Calculator
CSS Container Query Builder
CSS Math Functions Calculator
CSS Nesting Processor
CSS Media Query Builder
Design Token Converter
CSS Triangle Generator
CSS Bezier Easing Generator
CSS Scrollbar Generator
CSS Gradient Mesh Generator
Image Color Palette Extractor
CSS Filter Playground
CSS 3D Transform Builder
CSS Animation Timeline Editor
CSS Units Converter
CSS Background Patterns
Website Color Extractor
Layered Shadows & Smooth Elevation Studio
SVG to CSS Data URI Studio
Fluid Typography & Responsive Scale Studio
Responsive Image srcset & sizes Studio
DNI
DNI, NIF, CIF Generator
DNI Validator
Finance
Credit Card Validator
IBAN Generator/Validator
SWIFT/BIC Generator
Converters
Currency Converter
Unit Converter
JSON ↔ YAML
CSV Converter
File Size Converter
JSON ↔ CSV
Config Converter
CSV Viewer
Data URL Maker
Excel/Sheets to JSON/Markdown
PDF Utilities
Data Visualization Chart Builder
EXIF Metadata Extractor
HTML Table Builder & Exporter
Base64 UTF-8 URL-Safe Converter
TOML to JSON/YAML
MIME Type Finder
HTML to Markdown Converter
Image Resizer & Compressor
CSV/JSON Profiler
JSON Diff Viewer
Mock Data
Fake Data Generator
Mock data
Security
Webhook Signature Playground
Data Masking & PII Redactor
JWT Debugger
JWT Generator
JWT Signature Verifier
CSP Builder
Security Headers
SAML Decoder
Asymmetric JWT Crypto Lab
JWKS & Certificate Inspector
JWT Time & Expiry Debugger
HMAC Hash Generator
File Hash/Checksum Validator
SSH Key Generator
Dependency License Checker
iFrame Sandbox Builder
PEM Certificate Decoder
AWS IAM Policy Builder
JavaScript Obfuscator
Package.json Auditor
Webhook Signature Verifier
Cookie & Session Inspector
SRI Hash Generator
Cookie Consent Banner Generator
Privacy Policy Generator
Email Validator
Password Hash Generator
API Key Generator
Password Strength Analyzer
PKCE Generator & OAuth Debugger
Security.txt Generator (RFC 9116)
Permissions-Policy (Feature-Policy) Studio
Email Deliverability & DNS Studio (SPF, DKIM, DMARC)
Dev Tools
JSON Schema Test Case Generator
JSON Schema Validator & Tester
JSON Formatter
JSONPath Tester
JSON Schema Validator
JSON Schema Generator
JSON Patch Generator
JSON Diff
JSON → Zod/Valibot Schema
JSON to TypeScript & Zod
JSON to GraphQL Schema
GraphQL to TypeScript
GraphQL Schema Diff
Regex Tester
Regex Analyzer
Regex Builder
Regex Explainer
Git Conflict Resolver & Merge Studio
Changelog Generator
Docker Builder
Docker Compose Linter
Kubernetes YAML Generator
Dockerfile Linter & Size Analyzer
Kubernetes Pod Resources & QoS Sizer
Systemd Service & Timer Unit Builder
CI/CD Pipeline Generator
GitHub Actions Validator
Rate Limiter Builder
OpenRewrite Recipe Builder
Code Prettier
XML Formatter
Code Minifier
YAML Validator & Formatter
HTML to JSX Converter
SVG to JSX
HTML/CSS/JS Playground
Code Screenshot Creator
Bundle Analyzer
Auto Documentation Generator
Timestamp Converter
Cron Parser
Cron Builder
Diff Checker
SemVer Calculator
Bundle Estimator
Environment Variable Manager
React Component Profiler
Lighthouse CI Analyzer
Web Worker Sandbox
SVG Vector Optimizer
File Hex Dump & Magic Bytes Inspector
Mermaid Diagram Editor
OpenAPI Client Generator
Email HTML Tester
VSCode Snippet Generator
Performance Budget Calculator
Polyfill Builder
Log Parser & Analyzer
Dependency Graph Visualizer
Slack Message Builder
Responsive Design Tester
README Generator
Feature Flag & Canary Rollout Studio
Regex Debugger
Cron Timeline Visualizer
Regex Cheat Sheet
Keyboard Event & KeyCode Inspector
JSON Schema to TypeScript Converter
Text Tools
URL & Query Parameter Studio
Base64 & Data URL Studio
Lorem Ipsum
String Utils
Text Statistics
HTML Entity Encoder
Markdown Studio & Workspace
Markdown Preview
Text to ASCII/Unicode Art
String Slugifier & Case Converter
ASCII Table Generator
Unicode Character Inspector
Morse Code & NATO Phonetic Converter
Markdown Table Generator
Crypto & Hashing
Hash Generator & Verifier
UUID
UUID Generator
Vehicles
License Plate Generator
Machine
IP Address Lookup
System Information
Keyboard Tester
User Agent Parser
Device Info
Screen Resolution
Chmod Calculator
LocalStorage & Cookie Size Auditor
Passport
Passport Generator
Password
Password Generator
Bar Code
Barcode Generator
QR Code Generator
Invoicing
Work Order
Network
WebSocket & SSE Mock Stream Simulator
WebSocket Playground
GraphQL Subscriptions Tester
REST API Tester
Webhook Tester
WebSocket Tester
CORS Tester
GraphQL Tester
OpenAPI Mock Server
cURL to Code
URL Parser
cURL Builder
URL Expander
Port Scanner
DNS Lookup
SSL Checker
Redirect Checker
HSTS Checker
HTTP Status Codes
Subnet Calculator
DNS / Hosts File Generator
API Documentation Generator
Tech Stack Detector
API Load Tester
SSE Tester
HAR File Analyzer
Postman → cURL/OpenAPI
HTTP Cache Headers Simulator
OpenAPI Explorer
HTTP Request Waterfall
Dead Link Checker
IP Geolocation Lookup
DNS Zone File Generator
WHOIS Domain Lookup
MAC Address Lookup
HTTP Header Analyzer
DNS Propagation Checker
API Mock Server
HTTP Status Code Decision Matrix
Exponential Backoff & Jitter Simulator
Infrastructure
Nginx Config Generator
Terraform Plan Visualizer
PromQL Query Builder
SEO
Open Graph Preview Inspector
Meta Tags Generator
Robots.txt Generator
Sitemap Validator
Open Graph Generator
Sitemap Generator
RSS Feed Validator
SERP Preview Tool
Productivity
Pomodoro Timer
Email Signature Generator
Time Zone Converter
Request a tool
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PDF Utilities
Merge, split, reorder, and convert PDFs client-side
Minimal Standard PDF 1.4
Reset
PDF 1.4
5 Objects
PDF Source Structure & Header
Copy
%PDF-1.4 1 0 obj << /Type /Catalog /Pages 2 0 R >> endobj 2 0 obj << /Type /Pages /Kids [3 0 R] /Count 1 >> endobj 3 0 obj << /Type /Page /Parent 2 0 R /MediaBox [0 0 612 792] /Contents 4 0 R /Resources << /Font << /F1 5 0 R >> >> >> endobj 4 0 obj << /Length 71 >> stream BT /F1 24 Tf 100 700 Td (Architecture Blueprint PDF) Tj ET endstream endobj 5 0 obj << /Type /Font /Subtype /Type1 /BaseFont /Helvetica >> endobj xref 0 6 0000000000 65535 f 0000000009 00000 n 0000000058 00000 n 0000000115 00000 n 0000000242 00000 n 0000000345 00000 n trailer << /Size 6 /Root 1 0 R >> startxref 420 %%EOF
Maximum input size: 5 MB
Document Inspection & Binary Integrity
PDF Spec Version
PDF 1.4
Indirect Objects
5
Cross-Reference (XREF)
Valid Table
Encryption Status
Unencrypted
Generate & Download Real PDF Document
Download PDF
Page Range Planner & Extraction Validator
Range Expression (e.g. 1-5, 8, 12-15):
Parsed Page Sequence:
Page 1
Page 2
Page 3
Page 5
Page 8
Page 9
Page 10
7 Pages Total