Eisha Siddique
Eisha Siddique is the Managing Editor of theCoreiTech. Eisha reviews the Computer Software, Computer Security, and Web Tools guides, and writes about digital libraries, reading platforms, and content rights.
-
Tools
Robots.txt Generator
Build a valid robots.txt file in your browser. Set the user-agent, allow or disallow paths, and add your sitemap. Free,…
Read More » -
Tools
Open Graph Generator (og: Meta Tags)
Free Open Graph generator. Build og:title, og:description, og:image, og:url, and Twitter Card tags for social share previews. Runs in your…
Read More » -
Tools
Meta Tag Generator (HTML SEO Meta Tags)
Free meta tag generator that builds HTML SEO meta tags from your title, description, keywords, author, and robots rule. Runs…
Read More » -
Tools
Title and Meta Description Length Checker
Free title tag and meta description length checker. See character counts and approximate SERP pixel widths in real time so…
Read More » -
Tools
Keyword Density Checker
Paste your text into this free keyword density checker to see your total word count and the top terms with…
Read More » -
Tools
Duplicate Line Remover
Remove duplicate lines from any text or list in your browser. Keep the first occurrence, with options for case sensitivity,…
Read More » -
Tools
XML Formatter (Beautify and Minify XML)
Free XML formatter that beautifies XML with clean indentation or minifies it to one line. Runs entirely in your browser,…
Read More » -
Tools
CSS Text Shadow Generator
Free CSS text shadow generator. Adjust horizontal and vertical offset, blur, color, and opacity with live preview, then copy the…
Read More » -
Tools
Lorem Ipsum Generator
Free lorem ipsum generator. Create placeholder text by paragraphs, sentences, or words right in your browser. Pick a count, copy…
Read More » -
Tools
JWT Decoder (Decode JSON Web Tokens)
Free JWT decoder. Paste a JSON Web Token to read its header and payload, with human-readable exp, iat, and nbf…
Read More » -
Tools
Hexadecimal Calculator
Free hex calculator. Add, subtract, multiply, divide, AND, OR, or XOR two hexadecimal numbers and read the result in hex,…
Read More » -
Tools
CSS Flexbox Generator
Free CSS flexbox generator. Set flex-direction, justify-content, align-items, flex-wrap, and gap, preview the layout live, and copy the generated CSS…
Read More » -
Tools
CSS Grid Generator
Free CSS grid generator. Set columns, rows, gap, and alignment, see a live preview, and copy the grid-template CSS code.…
Read More » -
Tools
Binary Calculator
Free binary calculator. Add, subtract, multiply, divide, or apply AND, OR, and XOR to two binary numbers and see the…
Read More » -
Tools
UTM Link Builder (Campaign URL Builder)
Build tagged campaign URLs with our free UTM builder. Add utm_source, utm_medium, and utm_campaign to any link, then copy the…
Read More » -
Tools
Unix Timestamp Converter (Epoch to Date)
Convert a Unix timestamp to a readable date, or a date to epoch time, right in your browser. Auto-detects seconds…
Read More » -
Tools
PX to REM Converter (and REM to PX)
Convert px to rem and rem to px against any root font size with this free in-browser tool. See the…
Read More » -
Tools
JSON to CSV Converter (and CSV to JSON)
Convert JSON to CSV or CSV to JSON in your browser. Paste an array of flat objects or a CSV…
Read More » -
Tools
HTML Encoder and Decoder (Escape HTML Entities)
Free HTML encoder and decoder. Escape HTML entities like & < > " ' to display code safely or reverse…
Read More » -
Tools
CSS Box Shadow Generator
Free CSS box shadow generator with live preview. Drag offset, blur, spread, color, opacity, and inset to build the exact…
Read More » -
Tools
UUID and GUID Generator (Free, In-Browser RFC 4122 v4)
A UUID is a 128 bit universally unique identifier, written as 32 hexadecimal digits in the pattern 8-4-4-4-12, that labels…
Read More » -
Tools
URL Encoder and Decoder (Free, In-Browser)
URL encoding, also called percent-encoding, rewrites characters that are not allowed in a web address as a percent sign followed…
Read More » -
Tools
Text Case Converter (UPPERCASE, lowercase, Title Case Online)
A text case converter changes the letter case of your text, turning it into UPPERCASE, lowercase, Title Case, Sentence case,…
Read More » -
Tools
URL Slug Generator (Free, In-Browser)
A URL slug is the readable part of a web address that names one page, and a slug generator turns…
Read More » -
Tools
Date Duration Calculator (Days, Weeks and Months Between Two Dates)
The duration between two dates is the amount of time that separates them, measured in days and broken down into…
Read More » -
Tools
CSS Gradient Generator (Linear and Radial, Live Preview)
A CSS gradient is a smooth blend between two or more colours that the browser draws as a background image,…
Read More » -
Tools
Word and Character Counter (Free Online Text Counter)
A word and character counter measures how much text you have written by counting the words, characters, sentences, and paragraphs…
Read More » -
Tools
Time Zone Converter (Convert Times Between Time Zones Online)
A time zone converter changes a time from one time zone into the matching local time in another, so you…
Read More » -
Tools
Regex Tester (Free, In-Browser)
A regex tester is a tool that runs a regular expression against sample text and shows you exactly what it…
Read More » -
Tools
JSON Formatter and Validator (Free, In-Browser)
A JSON formatter is a tool that reformats JSON text into a clean, indented layout and confirms whether it is…
Read More » -
Tools
Color Picker (HEX, RGB and HSL)
A color picker is a tool that lets you choose a color and read its value as HEX, RGB and…
Read More » -
Tools
Base64 Encoder and Decoder (Encode and Decode Online)
Base64 is a way to represent binary data or text as a string of safe ASCII characters, so it can…
Read More » -
Tools
Strong Password Generator (Free, In-Browser)
A password generator creates a long, random password that no person would think of and no cracking tool can guess…
Read More » -
Computer Security
What Is Ransomware?
What is ransomware: malware that encrypts files and demands payment explained, including how it works, major examples, and how to…
Read More » -
Computer Security
What Is a Cyberattack?
What is a cyberattack: a deliberate attempt to breach or damage a computer system explained, including the main types, motives,…
Read More » -
Computer Security
What Is Social Engineering?
What is social engineering: manipulating people into giving up information or access explained, including common tactics, real examples, and how…
Read More » -
Computer Security
What Is a DDoS Attack?
What is a DDoS attack: flooding a service with traffic to make it unavailable explained, including attack types, how botnets…
Read More » -
Computer Security
Types of Phishing Attacks
Types of phishing attacks explained: email phishing, spear phishing, whaling, smishing, vishing, and clone phishing, with warning signs and how…
Read More » -
Computer Security
What Is Malware?
What is malware: malicious software designed to harm or exploit a device explained, including the main types, how it spreads,…
Read More » -
Computer Security
Types of Malware Explained
Types of malware explained: viruses, worms, trojans, ransomware, spyware, adware, rootkits, keyloggers, and botnets, with how each works and how…
Read More » -
Computer Security
What Is a Computer Worm?
What is a computer worm: self-replicating malware that spreads across networks without a host file, including how worms work, examples,…
Read More » -
Computer Security
What Is Spyware?
What is spyware: malware that secretly monitors and collects information explained, including types, signs of infection, and how to detect…
Read More » -
Computer Security
What Is a Rootkit?
What is a rootkit: stealthy malware that hides deep in a system to maintain access, including types, why they are…
Read More » -
Computer Security
What Is Adware?
What is adware: software that displays unwanted ads and may track activity, including how it works, the risks, and how…
Read More » -
Computer Security
What Is a Trojan Horse?
What is a trojan horse: malware disguised as legitimate software explained, including how trojans work, common types, and how to…
Read More » -
Computer Security
What Is a Keylogger?
What is a keylogger: software or hardware that records keystrokes to steal data, including types, how to detect them, and…
Read More » -
Computer Security
What Is a Botnet?
What is a botnet: a network of infected devices controlled by an attacker, including how botnets form, what they are…
Read More » -
Computer Security
What Is a Man-in-the-Middle Attack?
What is a man-in-the-middle attack: an attacker secretly intercepting communication between two parties, including types, risks, and how to prevent…
Read More » -
Computer Security
What Is Data Privacy?
Data privacy is the control over how personal information is collected, used, and shared, covering privacy vs security, GDPR, CCPA,…
Read More » -
Computer Security
What Is a Zero-Day Exploit?
What is a zero-day exploit: an attack using a vulnerability unknown to the vendor, including zero-day vs known flaws, examples,…
Read More » -
Computer Security
What Is SQL Injection?
What is SQL injection: a web attack that manipulates database queries explained at a high level, including the risk to…
Read More » -
Computer Security
How Encryption Works
Encryption converts readable data into ciphertext with keys and algorithms, covering symmetric and asymmetric methods, AES, RSA, and common uses.
Read More » -
Computer Security
What Is a Brute Force Attack?
What is a brute force attack: systematically guessing passwords or keys until one works, including types and how strong passwords…
Read More » -
Computer Security
What Is Identity Theft?
What is identity theft: stealing personal information to commit fraud, including how it happens, warning signs, and how to protect…
Read More » -
Computer Security
Symmetric vs Asymmetric Encryption
Symmetric vs asymmetric encryption compared: one shared key versus a public-private key pair, speed, use cases, and how they combine…
Read More » -
Computer Security
What Is End-to-End Encryption?
End-to-end encryption keeps keys only on sender and recipient devices so no intermediary reads messages, covering how it works, apps,…
Read More » -
Computer Security
What Is a Digital Certificate?
A digital certificate binds a public key to a verified identity issued by a Certificate Authority, covering PKI, the chain…
Read More » -
Computer Security
What Is Authentication?
What is authentication: the process of verifying a user's identity explained, including the factors of authentication, methods, and authentication versus…
Read More » -
Computer Security
Authentication vs Authorization
Authentication vs authorization compared: authentication verifies who you are while authorization decides what you can access, with how they work…
Read More » -
Computer Security
What Is Single Sign-On (SSO)?
Single sign-on lets a user log in once to access many applications, covering how SSO works, SAML, OAuth, OpenID Connect,…
Read More » -
Computer Security
What Is SSL/TLS?
SSL/TLS is the cryptographic protocol that encrypts web traffic and powers HTTPS, covering the TLS handshake, certificates, and SSL vs…
Read More » -
Computer Security
What Is Multi-Factor Authentication?
What is multi-factor authentication: requiring two or more verification factors to log in explained, including MFA types, why it stops…
Read More » -
Computer Security
What Is a Passkey?
A passkey is a passwordless login credential using public-key cryptography, covering how passkeys work, why they resist phishing, syncing, and…
Read More » -
Computer Security
What Is Hashing?
Hashing converts data into a fixed-length one-way fingerprint, covering hash function properties, hashing vs encryption, SHA-256, salting, and common uses.
Read More » -
Computer Security
What Is Biometric Authentication?
What is biometric authentication: verifying identity using physical or behavioral traits explained, including fingerprint, face, and iris methods, and the…
Read More » -
Computer Security
What Is Access Control?
Access control regulates who can access resources and what they can do, covering the DAC, MAC, RBAC, and ABAC models…
Read More » -
Computer Security
What Is Zero Trust Security?
Zero trust security trusts no user or device by default and verifies every request, covering its principles, how it differs…
Read More » -
Computer Security
What Is Online Tracking?
Online tracking monitors user activity across sites through cookies, pixels, and fingerprinting, covering who tracks, the end of third-party cookies,…
Read More » -
Computer Security
What Is a Security Vulnerability?
What is a security vulnerability: a weakness that attackers can exploit explained, including types, how vulnerabilities are scored with CVSS,…
Read More » -
Computer Security
What Is a Data Breach?
A data breach exposes confidential data to unauthorized parties, covering common causes, major examples like Equifax, consequences, and how to…
Read More »