TechPortal
Instant Web Utilities Suite • 100+ Tools

Browse Developer Tools by Category

Zero-install, high-performance web utilities for developers, designers, and content creators running directly in your browser.

All Tools 105 Tech Utilities 0 JSON & Data Utilities 9 SEO & Search Tools 11 Generators 12 CSS & Styling Tools 12 Web & Dev Utilities 11 Text & Content Tools 10 Image & Media Tools 13 Security & Encoders 10 Calculators & Converters 17
Calculators & Converters

JSON to YAML Quick Converter

Convert JSON objects to clean YAML configuration strings or parse YAML back to structured JSON.

Instant Run • 28 uses
SEO & Search Tools

JSON-LD Structured Data Schema Generator

Generate Google Structured Data JSON-LD schemas for Articles, FAQs, Products, LocalBusiness, and Breadcrumbs.

Instant Run • 51 uses
Security & Encoders

JWT Generator & Secret Token Debugger

Generate, decode, and verify JSON Web Tokens (JWT) with custom payload claims, secret signatures, and HMAC-SHA256 100% locally.

Instant Run • 24 uses
SEO & Search Tools

Keyword Density & Frequency Analyzer

Analyze text content for top 1-word, 2-word, and 3-word keyword density percentages to avoid keyword stuffing.

Instant Run • 52 uses
Text & Content Tools

Line & Character Inspector

Count total lines, empty lines, non-empty lines, average line length, and longest lines in any text document.

Instant Run • 42 uses
Web & Dev Utilities

Live Markdown to HTML Converter

Convert rich markdown text to clean, semantic HTML markup in real-time with visual preview pane and instantaneous code copying.

Instant Run • 43 uses
Generators

Lorem Ipsum & Dummy Text Generator

Generate custom placeholder text, paragraphs, words, sentences, and HTML lists for web design layouts and content prototyping.

Instant Run • 50 uses
Generators

Lorem Ipsum Markdown Article Generator

Generate dummy Markdown articles with headers, lists, code blocks, and blockquotes for testing content systems.

Instant Run • 48 uses
Generators

Mock Data & Fake User JSON Generator

Generate realistic dummy user datasets (Name, Email, Phone, Address, Company) in structured JSON format.

Instant Run • 51 uses
SEO & Search Tools

Open Graph & Social Media Generator

Build high-converting Open Graph and Twitter Card tags to ensure your content looks rich when shared on Facebook, Twitter, and LinkedIn.

Instant Run • 53 uses
Security & Encoders

Password Strength & Entropy Analyzer

Analyze password strength entropy, crack estimation time, character diversity, and vulnerability metrics.

Instant Run • 30 uses
Calculators & Converters

Percentage & Discount Calculator

Calculate percentage increases, percentage differences, store discount prices, and profit margins.

Instant Run • 28 uses
Calculators & Converters

PX to REM / EM Units Converter

Convert pixel values (px) to responsive REM and EM CSS units based on custom root font sizes.

Instant Run • 25 uses
Web & Dev Utilities

Regex (Regular Expression) Tester

Test JavaScript regular expression patterns against test text with live match highlighting, capture groups, and flag controls.

Instant Run • 44 uses
Calculators & Converters

Responsive Container & Scale Calculator

Calculate responsive web canvas sizes, scaling factors, and container dimensions for web layouts.

Instant Run • 23 uses
Text & Content Tools

Reverse Text & Character Flipper

Reverse entire text strings, reverse word order, reverse character order, or flip text upside down.

Instant Run • 49 uses
SEO & Search Tools

Robots.txt Generator & Rules Builder

Easily create custom robots.txt files for search engine crawlers (Googlebot, Bingbot) with crawl-delay and disallow path settings.

Instant Run • 88 uses
Calculators & Converters

Roman Numeral Converter (Numbers to Roman)

Convert decimal numbers to Roman numerals (e.g. 2026 to MMXXVI) and decode Roman numerals back to numbers.

Instant Run • 25 uses
Security & Encoders

RSA Public & Private Key Pair Generator

Generate secure 2048-bit or 4096-bit RSA public and private key pairs for SSH and SSL completely client-side.

Instant Run • 23 uses
Security & Encoders

Secure API Token & Secret Key Generator

Generate cryptographically secure random API keys, secrets, hex tokens, and OAuth string keys.

Instant Run • 32 uses
Security & Encoders

Secure Password Generator

Instantly generate highly secure, random passwords with custom lengths and character types locally in your browser.

Instant Run • 28 uses
Generators

SEO Permalink & Slug Generator

Convert titles, strings, and text into clean, SEO-friendly URL permalinks with custom separators and stopword filtering.

Instant Run • 44 uses
SEO & Search Tools

SEO Title & Meta Description Pixel Length Checker

Test SEO page title (max 60 chars / 580px) and meta description (max 160 chars / 990px) pixel lengths against SERP limits.

Instant Run • 48 uses
Web & Dev Utilities

SQL Query Formatter & Beautifier

Format raw or minified SQL queries into clean, indented code with syntax highlighting for MySQL, PostgreSQL, and SQLite.

Instant Run • 45 uses
Generators

SVG Background Pattern Generator

Create seamless SVG geometric patterns, grids, and dots for web backgrounds with instant CSS export.

Instant Run • 47 uses
Image & Media Tools

SVG Code Optimizer & Minifier

Clean XML metadata, editor namespaces, comments, and whitespace from SVG files to shrink file sizes.

Instant Run • 30 uses
Image & Media Tools

SVG to PNG / JPEG Converter

Convert SVG vector code or SVG files into high-resolution PNG or JPEG raster images.

Instant Run • 40 uses
Generators

Test Credit Card Number Generator (Luhn Algorithm)

Generate valid test credit card numbers (Visa, Mastercard, Amex) using the Luhn algorithm for payment testing.

Instant Run • 56 uses
Text & Content Tools

Text Case Converter

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and PascalCase.

Instant Run • 37 uses
Text & Content Tools

Text Difference & Diff Checker

Compare two text files or code snippets side-by-side to highlight added, removed, and modified lines.

Instant Run • 47 uses
✓

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Client-Side Security

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Zero Latency

Blazing fast execution

Mobile Optimized

Works on phone & desktop