📏

Resistor Color Code Decoder

Calculate resistance and tolerance from color bands on through-hole resistors.

💡

LED Series Resistor Calculator

Determine the correct resistor for your LED to prevent it from burning out.

🔋

Capacitor Code Decoder

Decode the 3-digit code on ceramic and film capacitors.

📟

SMD Resistor Decoder

Identify the resistance value of surface-mount resistors (EIA-96, 3-digit, 4-digit).

📟

Web Serial Terminal

Connect to microcontrollers (Arduino, ESP32, etc.) directly from your browser to view logs and send commands.

📉

Voltage Divider Calculator

Calculate the output voltage or required resistor values for a simple two-resistor voltage divider.

🔢

7-Segment Display Designer

Interactive designer to generate Hex/Binary codes for 7-segment LED displays.

🎨

OLED/LCD Custom Character Creator

Design custom 5x8 or 8x8 characters and icons for LCD and OLED displays.

📉

Baud Rate Error Calculator

Calculate the percentage error between target and actual baud rates based on microcontroller clock frequency.

⚡

ESP32 Web Flasher

Flash multiple firmware (.bin) files to ESP32 series microcontrollers with custom offsets directly from your browser.

🍓

RP2040 / RP2350 Firmware Uploader

Upload UF2 firmware files to Raspberry Pi Pico, Pico 2, and other RP2040/RP2350 boards directly from your browser.

🐧

Linux Error Code Lookup

Find the standard name and description for Linux system error codes.

🪟

Windows Error Code Lookup

Lookup common Windows system and HRESULT error codes.

💻

BSOD Error Lookup

Find causes for common Windows Blue Screen of Death (BSOD) codes.

🖥️

RDP File Generator

Generate a pre-configured .rdp file for remote desktop connections.

🌐

HTTP Error Code Lookup

Quickly find the meaning of HTTP status and error codes.

🐚

SSH Command Builder

Generate a standard SSH connection command.

🚪

Port Number Database

Look up common service names for TCP/UDP port numbers.

🛠️

Network Troubleshooting Checklist

A step-by-step guide for diagnosing and fixing common network problems.

🖥️

Windows Event ID Security Interpreter

Explains Windows Security Event IDs (4624, 4625, 4720, 1102, 7045) with threat analysis and forensic guidance.

0️⃣

Binary Converter

Convert text to binary or binary back to text.

🔢

Integer Base Converter

Convert a number between different bases (decimal, hex, binary, octal, etc.).

🏛️

Roman Numeral Converter

Convert Roman numerals to numbers and vice-versa.

🎨

Color Converter

Convert color between different formats (Hex, RGB, HSL).

📻

Text to NATO Alphabet

Transform text into the NATO phonetic alphabet for oral transmission.

🛡️

Base32 Encoder/Decoder

Encode or decode text using the Base32 (RFC 4648) algorithm, which uses a human-readable alphabet.

📁

Base32 File Converter

Convert a local file to its Base32 representation or reconstruct a file from Base32 data.

🖼️

Base64 File Converter

Convert any file to a Base64 string (Data URI) or reconstruct a file from Base64 for download.

🅰️

ASCII Converter

Convert text characters to their ASCII numeric codes (Decimal and Hex).

🚪

String Escape Tool

Escape strings for use in Python, JSON, Bash, and other programming formats.

🔗

URL Encoder

Safely encode strings for use in URLs by converting special characters to percent-encoded format.

🔓

URL Decoder

Decode percent-encoded strings back into their original, human-readable format.

📄

HTML Encoder

Convert sensitive characters to HTML entities to prevent XSS and ensure correct rendering.

📖

HTML Decoder

Convert HTML entities (like <) back into their original characters for readability.

🔢

Text to Hex

Convert plain text to its hexadecimal representation.

🔡

Hex to Text

Convert hexadecimal strings back to plain text.

🆔

UUID Generator

Generate unique v1 or v4 UUIDs for identifiers.

🔄

ROT13 Encoder

A simple substitution cipher that replaces a letter with the 13th letter after it.

🔡

String Case Converter

Convert strings between camelCase, PascalCase, snake_case, kebab-case, etc.

🔣

Unicode Converter

Convert text to Unicode escape sequences and hex codepoints.

🎲

Random String Generator

Generate a random string of characters with custom length and sets.

🚀

Bulk Ping Tool

Check the reachability of multiple hosts simultaneously.

🔎

Bulk DNS Lookup

Fetch DNS records for multiple domains at once.

📉

VLSM Calculator

Variable Length Subnet Masking (VLSM) calculator for efficient IP address allocation.

📡

Bulk Port Scanner

Scan common ports across multiple hosts simultaneously.

📋

IP Address Inventory Tool

Organize and calculate IP allocations for a given network range.

🖼️

Network Diagram Generator

Generate a simple textual representation of your network topology.

🐋

Docker Command Generator

Quickly build common 'docker run' commands with ports and names.

☸️

Kubernetes YAML Generator

Generate basic K8s Deployment and Service manifests for your application.

💰

Cloud Cost Estimator

Estimate monthly costs for common cloud instance types.

🧱

Firewall Rule Generator

Quickly generate UFW or IPTables rules for common ports.

🛠️

Docker Run to Compose Converter

Convert a 'docker run' command into a 'docker-compose.yml' file.

🐳

Dockerfile to Compose Converter

Extract ports, env vars, and settings from a Dockerfile to create a Compose file.

📊

NPS DTS-to-CSV Converter

Convert Microsoft NPS logs (DTS XML format) into a structured CSV for Excel analysis.

📖

RADIUS & NPS Reason Code Interpreter

Map numeric Microsoft NPS and RADIUS reason codes (e.g., 16, 66) to human-readable fixes.

🔐

EAP-TLS Certificate Validator

Analyze X.509 PEM certificates for 802.1X and EAP-TLS compatibility issues.

🏗️

RADIUS VSA Builder

Construct custom Vendor-Specific Attributes (VSAs) for RADIUS packet crafting.

🔓

Cisco Type 7 Password Decrypt / Decode / Cracker

Decrypt, Decode, or Crack weak Cisco Type 7 passwords from device configurations.

🧮

Math Evaluator

A safe calculator for evaluating mathematical expressions (e.g., 'sqrt(25) + 10').

📊

Percentage Calculator

Quickly calculate percentages, increases, and proportions.

🌡️

Temperature Converter

Convert temperatures between Celsius, Fahrenheit, and Kelvin.

📝

Lorem Ipsum Generator

Generate standard placeholder text for layouts and design prototypes.

📈

Text Statistics

Analyze your text to get word count, character count, and estimated reading time.

🎨

ASCII Art Text Generator

Create stylized ASCII art text from any string.

🌫️

String Obfuscator

Hide sensitive parts of a string while keeping it identifiable (e.g., 'se*******123').

🔢

Numeronym Generator

Create tech-style abbreviations like 'i18n' or 'k8s'.

😀

Emoji Picker

Quickly find and copy common technical and status emojis.

⏱️

Chronometer / Stopwatch

A high-precision stopwatch for timing technical tasks and benchmarks.

⏳

ETA / Completion Calculator

Estimate the time remaining for downloads, file transfers, or long-running tasks.

🔏

PDF Signature Checker (Guidance)

Learn how to verify the digital signatures and integrity of a PDF document.

📊

CSV-to-SQL 'INSERT' Generator

Transform CSV data into a series of SQL INSERT statements for database migrations.

🪣

AWS S3 Bucket Policy Hardener

Generate secure, hardened JSON policies for AWS S3 buckets to enforce HTTPS.

☸️

Kubernetes YAML Resource Optimizer

Calculate and suggest optimal CPU/Memory limits and requests for Kubernetes manifests.

🏗️

Terraform Variable File Generator

Quickly scaffold .tf and .tfvars files from a list of variable names.

📦

JSON Formatter & Minifier

Prettify or minify JSON strings instantly.

🔄

YAML / JSON / TOML Converter

Convert between YAML, JSON, and TOML formats.

🗄️

SQL Prettify & Format

Format and prettify SQL queries for better readability.

📝

Markdown to HTML

Convert Markdown text into HTML and preview the result.

⚖️

JSON Diff Checker

Compare two JSON objects and see their structural differences.

📜

List Converter

Process column-based data (sort, reverse, unique, case change, prefix/suffix).

🧬

XML Formatter

Prettify and format XML strings for better readability.

📉

Code Minifier

Minify HTML or CSS by removing whitespace and comments.

🧪

Regex Tester

Test your regular expressions against sample text.

🆚

Diff Checker

Compare two pieces of text and find the differences.

⏰

Cron Expression Generator

Generate and explain cron expressions for scheduled tasks.

📜

Bash Shell Script Safety Audit

Scans Bash shell scripts for unquoted variables, unsafe rm -rf commands, eval calls, and missing error flags.

📧

Email Validator

Verify the format and domain mail servers (MX) of an email address.

📬

MX Record Lookup

Find the Mail Exchange (MX) records for a domain.

🛡️

SPF Record Checker

Check if a domain has a valid Sender Policy Framework (SPF) record.

🔑

DKIM Checker

Verify a domain's DomainKeys Identified Mail (DKIM) record using a selector.

📋

DMARC Checker

Lookup a domain's Domain-based Message Authentication, Reporting, and Conformance (DMARC) record.

🔬

Email Header Analyzer

Paste raw email headers to analyze the sender, route, and authentication details.

📤

SMTP Tester

Check if an SMTP mail server is reachable and accepting connections.

🛠️

SPF Generator

Create a custom SPF record for your domain to authorize mail servers.

🚫

Email Blacklist Checker

Check if an email server IP or domain is listed on major spam blacklists.

🎭

Email Spoof Checker

Analyze SPF and DMARC records to determine the risk of email spoofing.

⏱️

Email Header Hop-Time Analyzer

Analyze 'Received' headers to calculate the time taken between mail server hops.

🔑

DKIM Generator

Generate instructions and commands to create DKIM keys for your domain.

🏠

Private IP Generator

Generate random private IP addresses for testing or documentation.

🌲

Juniper Junos-to-Set Converter

Flatten hierarchical Juniper Junos configurations into a list of 'set' commands.

🛡️

FortiOS Object Cleanup Generator

Generate FortiGate CLI commands to purge unused addresses, services, or groups.

🧱

Cisco ACL to Object-Group Refactor

Optimize Cisco IOS/ASA ACLs by consolidating repetitive host IPs into reusable object-groups.

🧮

IP Subnet Calculator

Calculate subnet details including network, broadcast, and host range.

🔢

IP Range Generator

Generate a list of all usable IP addresses in a subnet.

🌍

Public IP Checker

Quickly identify your current public IP address.

🔄

Reverse DNS Lookup

Find the domain name (PTR record) associated with an IP address.

🚪

TCP Port Checker

Check if a specific TCP port is open on a remote host.

🌐

CIDR Calculator

Convert CIDR notation to netmask and find network boundaries.

🆔

WHOIS Domain Lookup

Check domain registration details and ownership information.

🔍

DNS Lookup

Query specific DNS records (A, MX, TXT, etc.) for a domain.

💻

MAC Address Lookup

Identify the hardware manufacturer of a device from its MAC address.

📍

Traceroute Tool

Trace the path packets take to a destination host and see each hop.

📡

UDP Port Checker

Check if a UDP port is open (best effort check).

🗺️

IP Geolocation Finder

Identify the physical location, ISP, and ASN of an IP address.

🏢

ASN Lookup

Lookup details for an Autonomous System Number (ASN).

⏱️

Network Latency Tester

Measure network latency (RTT) and jitter to a destination host.

🏓

Ping Tool

Check basic connectivity to a host using ICMP echo requests.

📡

Port Scanner

Scan common ports on a target host to see which are open.

🌍

DNS Propagation Checker

Check DNS records across multiple global DNS providers to verify propagation.

🛤️

BGP Route Lookup

Query BGP routing information for an IP address.

📏

MTU Size Tester

Identify the Maximum Transmission Unit (MTU) for a network path.

📉

Packet Loss Test

Calculate packet loss percentage to a remote host.

📜

HTTP Headers Viewer

Inspect HTTP response headers including security and server details.

🔒

Cisco IOS Hardening Audit Tool

Audits Cisco IOS/IOS-XE configuration snippets for security vulnerabilities, weak passwords, and insecure protocols.

🔌

VLAN Trunk & Native VLAN Auditor

Compares trunk interface configuration between two switches to detect native VLAN mismatches and dropped VLANs.

🌳

JSON to XML Converter

Convert JSON data into structured XML format.

🧬

XML to JSON Converter

Convert XML data into a clean JSON object.

📊

CSV to JSON Converter

Convert CSV spreadsheet data into a clean JSON array of objects.

📄

JSON to CSV Converter

Convert a JSON array of objects into a flat CSV format.

💾

File Size Converter

Convert between different units of digital storage (Bytes, KB, MB, GB, TB, etc.).

🕰️

Unix Time Converter

Convert between Unix timestamps and various human-readable date formats.

📅

Date Format Converter

Change the format of a date string (e.g., YYYY-MM-DD to DD/MM/YYYY).

🪪

Active Directory SID Interpreter

Parses Windows Security Identifiers (SIDs) into Revision, Identifier Authority, Domain ID, and RID with well-known account lookups.

⚙️

Systemd Service Unit Generator

Generates Linux systemd .service unit configuration files with security hardening directives.

📁

Logrotate Configuration Builder

Generates Linux logrotate configuration blocks for web servers, custom apps, and database logs.

📉

SLO 'Error Budget' Calculator

Calculate allowed downtime based on Service Level Objectives (99.9% - 99.999%).

🐧

Linux Command Cheat Sheet

Quick reference for common Linux commands and their usage.

🪟

Windows Command Cheat Sheet

Quick reference for common Windows Command Prompt / PowerShell commands.

📂

Git Cheat Sheet

A quick reference for the most common Git commands used in version control.

🔌

Random Port Generator

Generate random port numbers outside of the range of 'known' ports (0-1023).

🧹

Email Normalizer

Normalize email addresses for deduplication by handling provider-specific sub-addressing.

🧩

Regex Cheat Sheet

A quick reference guide for common Regular Expression (Regex) syntax and patterns.

🌐

IPv4 Address Converter

Convert an IPv4 address into Decimal, Binary, Hex, and IPv6 formats.

💻

MAC Address Generator

Generate randomized MAC addresses with optional vendor OUI prefixes.

🌍

IPv6 ULA Generator

Generate private, non-routable IPv6 Unique Local Addresses (RFC 4193).

🔒

Linux Permissions Calculator

Convert numeric permissions to symbolic notation (rwx) and build chmod commands.

🐞

CVE & Exploit-DB Matcher

Formats CVE IDs and generates direct links to NVD, MITRE CVE, Exploit-DB, and CISA KEV catalogs.

⚔️

MITRE ATT&CK Technique Mapper

Maps Technique IDs (T1059, T1003, etc.) and security keywords to MITRE ATT&CK tactics, sub-techniques, and mitigations.

🦠

Malware String De-obfuscator

Decode and de-obfuscate Base64, ROT13, Hex, and concatenated strings found in scripts.

🔐

Random Secure Key Generator

Generate strong, random secure keys for encryption and configuration.

🛡️

Bcrypt Generator & Verifier

Hash and compare text strings using the industry-standard Bcrypt algorithm.

🆔

ULID Generator

Generate random Universally Unique Lexicographically Sortable Identifiers (ULID).

🔒

AES Text Encryptor / Decryptor

Symmetrically encrypt or decrypt text using the Advanced Encryption Standard (AES).

🔑

BIP39 Passphrase Generator

Generate or validate BIP39 mnemonic passphrases for cryptocurrency wallets.

🔑

HMAC Generator

Compute a keyed-hash message authentication code (HMAC) for data integrity.

🗝️

RSA Key Pair Generator

Generate random asymmetric RSA private and public PEM key pairs.

🔢

TOTP Code Generator

Generate and test time-based one-time passwords (2FA codes).

🏦

IBAN Validator & Parser

Verify the checksum and extract details from an International Bank Account Number.

📱

Phone Parser & Formatter

Validate and format international phone numbers into E.164 and other standards.

📧

Outlook Safelink Decoder

Decode and reveal the true destination of Microsoft Outlook SafeLink URLs.

🏗️

JWT Encoder

Generate a HS256 signed JSON Web Token (JWT) from a custom JSON payload.

🕵️

Hash Identifier

Identify the likely hashing algorithm used to create a specific hash string.

📑

JWT Decoder

Decode and inspect the header and payload of any JSON Web Token.

🛡️

SSL Certificate Checker

Verify the validity, issuer, and expiration of a website's SSL/TLS certificate.

🛡️

Base64 Encoder

Convert plain text into Base64 format for safe transmission and storage.

🔓

Base64 Decoder

Decode Base64 strings back into their original human-readable text.

⚖️

Hash Matcher

Compare two cryptographic hashes to see if they are identical.

🆔

Random ID & UUID Generator

Generate unique alphanumeric IDs and standard UUIDs for database keys and testing.

🔗

URL Encoder/Decoder

Encode or decode text into URL-safe formats (Percent-Encoding).

📁

File Hash Generator

Calculate CRC, MD2, MD4, MD5, SHA1, SHA2, SHA3, Keccak, and Shake hashes for local files directly in your browser.

💪

Password Strength Checker

Analyze the complexity and security of your password.

🎲

Random Token Generator

Generate highly secure, random tokens for API keys, CSRF protection, and session management.

📅

SSL Expiry Checker

Quickly identify the expiration date and remaining validity days of any domain's SSL certificate.

🔒

TLS Version Checker

Verify the specific TLS protocol version and cipher suite supported by a server.

🛡️

Security Headers Checker

Audit a website for critical security headers like HSTS, CSP, and X-Frame-Options.

🚫

Domain Blacklist Checker

Verify if a domain or IP is listed on major email and web spam blacklists.

🦠

Malware URL Checker

Analyze a URL for suspicious patterns often associated with malware and phishing (Reference).

🛡️

Phishing URL 'Defanger'

Neutralize malicious URLs (e.g., http[:]//badsite[.]com) for safe sharing in tickets.

🖼️

Base64-to-Image Reconstructor

View images that are embedded as Base64 strings in log files or emails.

🔑

Password Generator

Create secure, random passwords with custom parameters.

🔒

Hash Generator

Generate CRC, MD2, MD4, MD5, SHA1, SHA2, SHA3, Keccak, and Shake hashes for any text directly in your browser.

📈

Prometheus PromQL Query Generator

Generates production PromQL queries for CPU, memory, HTTP 5xx error rates, and p95 latency histograms.

🚪

Port Monitoring Tool

Check if critical ports are listening on a specific host.

🛡️

IP Reputation Checker

Check if an IP address has a history of malicious activity or spam.

🌐

Website Uptime Checker

Check if a website is currently online and responding.

⏱️

API Latency Tester

Measure the response time of any API endpoint.

🛤️

HTTP Redirect Checker

Trace the full path of HTTP redirects for any URL.

⚡

Website Speed Test

Check the full page load time and response size of a website.

🛡️

SSL Monitoring Tool

Monitor SSL certificate status and expiration days.

📅

Domain Expiry Checker

Monitor when a domain name is set to expire.

🔎

DNS Monitoring Tool

Monitor DNS records and verify if they match expected values.

📤

SMTP Connectivity Test

Monitor and test connection to outgoing email (SMTP) servers.

🤖

Robots.txt Generator

Easily create a robots.txt file for your website.

🗺️

Sitemap Generator

Generate a simple XML sitemap for your website.

🔗

URL Parser

Parse a URL into its separate constituent parts (protocol, origin, params, etc.).

🔐

Basic Auth Generator

Generate a Base64 Basic Auth header from a username and password.

📱

Open Graph Meta Generator

Generate Open-Graph and social media HTML meta tags for your website.

🐌

Slugify String

Make a string URL, filename, and ID safe (Slugify).

📄

MIME Types Lookup

Convert MIME types to file extensions and vice-versa.

🚦

HTTP Status Codes List

Browse and search the full list of HTTP response status codes.

🔳

QR Code Generator

Generate and download a QR code for a URL or plain text.

📶

WiFi QR Code Generator

Generate QR codes for quick connections to WiFi networks.

🖼️

SVG Placeholder Generator

Generate SVG images to use as a placeholder in your applications.

🌐

User-Agent Parser

Parse a user-agent string to identify browser and OS details.

🔍

Domain Availability Checker

Check if a domain name is available for registration.