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Nexifr

Developer Studio

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Data

JSON Formatter

Format, validate, and beautify JSON data.

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Data

CSV to JSON & JSON to CSV

Transform formatted spreadsheet CSV datasets into JSON arrays or stringify JSON back to clean CSV files.

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Data

JSON to TypeScript Converter

Paste structured JSON objects and generate copyable TypeScript interface types or JSON Schema models instantly.

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Security

JWT Decoder

Decode and inspect JSON Web Tokens without sending data to a server.

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Security

Hash Generator

Generate cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512) from text.

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Security

Strong Password Generator

Generate cryptographically secure random passwords securely in your browser with customized length and character sets.

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Data

Base64 Converter

Encode text to Base64 format or decode Base64 back to plain text.

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Data

Base64 Image Encoder / Decoder

Encode PNG/JPEG/SVG images into inline Base64 data URI strings or decode data URIs back to downloadable files.

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Data

URL Encoder/Decoder

Encode special characters for URLs or decode URL-encoded parameter strings.

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Data

Text Case Converter

Change text cases instantly to sentence case, title case, uppercase, lowercase, camelCase, snake_case, and kebab-case.

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Data

UUID Generator

Generate secure, random UUID v4 or time-based UUID v7 identifiers.

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Data

Text Diff Checker

Compare two text blocks line-by-line and view additions and deletions.

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Data

Epoch Date Converter

Convert Unix epoch timestamps to human-readable dates and vice versa.

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Data

RegEx Tester

Validate regular expressions with flag modifiers and see highlighted matches.

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Data

SQL Formatter

Format and indent raw SQL queries to make them readable.

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Data

Cron Parser

Decode 5-part cron expressions into plain English schedules.

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Data

Morse Code Translator

Translate text to Morse code, decode Morse back to text, and play audio beeps securely in your browser.

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Data

Invisible Character Generator

Generate zero-width or empty filler characters for social media names and input testing.

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Testing

Responsive Screen Simulator

Test how your website looks on different screen resolutions using an interactive viewport simulator.

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Data

Unix Permissions Calculator

Calculate octal and symbolic permissions for Unix/Linux files and directories.

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Data

URL Parser & Query Splitter

Deconstruct any URL into its protocol, host, path, hash, and interactive key-value query parameters.

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Data

JSON / XML Converter

Convert JSON strings to XML documents and XML nodes to structured JSON objects.

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Optimization

CSS Formatter & Minifier

Format messy CSS stylesheet files or minify them for maximum web performance optimization.

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Data

HTML Entity Converter

Safely encode special characters to HTML entities or decode them back.

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Data

User-Agent Parser

Extract operating system, browser engine, and device types from User Agent headers.

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Design

Font Style Generator

Convert normal text into 42 distinct stylish Unicode fonts for Instagram, Twitter/X, and social bios.

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Design

SVG Viewer

View, edit, optimize, and convert SVG files to React JSX, React Native, PNG, and Data URI — 100% browser-local.

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Developer Utility

Binary & Base Converter

Translate normal text to binary and vice versa, or convert numbers between Binary, Decimal, Hexadecimal, and Octal.

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Network Tools

DNS Record Lookup

Inspect standard DNS records (A, AAAA, MX, NS, CNAME, TXT) for any domain using DNS-over-HTTPS.

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Network Tools

Whois Lookup

Fetch real-time registrar metadata, status, registration dates, and name server arrays for any domain.

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Network Tools

IP Geolocation & ASN Checker

Look up available country, region, approximate coordinates, and ASN data for an IP address.

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Formatting

HTML Beautifier & Minifier

Format raw, unreadable HTML blocks into nicely indented structures, or minify HTML to strip comments and spaces.

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Network Tools

SSL Certificate Checker

Verify certificate expiration date, issuer CN/O details, validity status, and remaining days for a secure HTTPS server.

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CSS

CSS Gradient Generator

Create beautiful linear, radial, and conic gradient CSS code with ease.

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CSS

Color Picker & Converter

Convert hex colors to RGB, HSL, and other formats instantly.

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CSS

Box Shadow Generator

Generate custom box-shadow CSS with offset, blur, spread, and inset controls.

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CSS

CSS Flexbox Generator

Visual flexbox layout code generator with direction, wrap, justify, and align settings.

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Security

Text Encrypt / Decrypt

Encrypt and decrypt text using AES-256-GCM with a password. All processing stays in your browser.

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Formatters

YAML Formatter

Format and beautify messy YAML content with customizable indentation.

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Security

JWT Generator & Debugger

Generate HS256 JWTs with a custom payload and secret key.

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Design

Color Picker & Converter

Pick colors and convert between HEX, RGB, HSL, and CMYK formats in real-time.

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Security

Password Strength Checker

Check the strength and entropy of your passwords securely in your browser.

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Development

cURL Command Builder

Visually build cURL requests with custom headers, body payloads, and auth.

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Data

CSV Viewer & JSON Exporter

Interactive browser viewer for CSV files with search, sorting, and JSON export.

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Data

YAML / JSON / TOML Converter

Convert data schemas bidirectionally between JSON, YAML, and TOML formats.

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Data

JSON Schema Validator

Validate JSON payloads against standardized JSON Schemas (AJV compilation).

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CSS

JavaScript Minifier

Compress JavaScript source code by removing comments, spacing, and newlines.

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Conversion

JSON to YAML Converter

Convert JSON to YAML and YAML to JSON instantly in your browser.

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CSS Tools

Border Radius Generator

Generate CSS border-radius with individual corner control, live preview, and presets.

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SEO & Marketing

UTM Builder

Build UTM tracking links for Google Analytics 4 campaigns and decode existing UTM URLs.

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CSS Tools

CSS Animation Generator

Generate CSS keyframe animations with live preview — fade, slide, bounce, rotate, and more.

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