TheCoreiTech

Decision Wheel (Random Picker)

Use this free decision wheel to pick one option at random from your own list. Type the choices, press Spin,…

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Cubic Bezier Generator (CSS Easing Curve)

Free cubic bezier generator for CSS easing curves. Set four control points, see the curve drawn live, and copy the…

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AI Image Resolution Presets (Aspect Ratios)

Free AI image resolution preset tool. Pick an aspect ratio and base size to get the recommended width by height,…

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Random Team Generator (Split a List into Teams)

Free random team generator. Paste a list of names, choose how many teams you want, and split everyone into balanced,…

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SERP Snippet Preview (Google Search Preview)

Free SERP snippet preview tool. See how your title, URL, and meta description look in Google search results on desktop…

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Random List Shuffler (Randomize a List)

Randomize the order of any list in your browser with a fair Fisher-Yates shuffle. One item per line, optional blank-line…

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htaccess Redirect Generator (301 and 302)

Free htaccess redirect generator. Build Apache .htaccess blocks for 301 and 302 redirects, force HTTPS, and add or remove www.…

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Dice Roller (Roll Virtual Dice Online)

Free online dice roller. Pick the number of dice and sides, then roll d4, d6, d8, d10, d12, d20, or…

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CRC32 Checksum Calculator

Free online CRC32 calculator. Paste any text and get its CRC32 checksum in 8-digit hex and unsigned decimal, computed in…

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Coin Flip (Flip a Coin Online)

Flip a coin online for free. Get a fair, random heads or tails result, or flip many coins at once…

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Number Base Converter (Any Base 2 to 36)

Convert numbers between any base from 2 to 36 in your browser. Enter a value, pick a from-base and to-base,…

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Words to Tokens Estimator (LLM Token Counter)

Free words to tokens estimator. Paste text to count characters and words and estimate LLM tokens using the ~4 chars…

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GPU VRAM Calculator for Local LLMs

Estimate how much GPU VRAM a local LLM needs from its parameter count, quantization, and context length. Free in-browser calculator…

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UUID Validator (Check UUID Format and Version)

Free UUID validator. Paste a UUID to check the 8-4-4-4-12 format and read its version and variant. Runs in your…

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Twitter Card Generator (X Card Meta Tags)

Free Twitter Card generator. Build the twitter:card, twitter:title, twitter:description, twitter:image, and twitter:site meta tags for X in your browser.

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Schema Markup Generator (JSON-LD)

Free schema markup generator that builds valid JSON-LD structured data for Article, Organization, WebSite, and LocalBusiness pages right in your…

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Luhn Validator (Card Number Checksum)

Free Luhn validator to check if a card or account number passes the mod 10 checksum and detect the card…

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LLM API Cost Calculator

Free LLM API cost calculator. Enter input and output tokens, requests, and your provider's per-million token prices to see the…

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Canonical Tag Generator

Free canonical tag generator. Paste a page URL and get a clean, self-referencing rel=canonical link tag. Optional https and lowercase…

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Working Days Calculator (Business Days Between Dates)

Free business days calculator. Enter a start and end date to count the working days (Monday to Friday) and weekend…

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Random Username Generator

Generate random usernames in your browser. Pick a style, add numbers, and create a list of suggestions for games, forums,…

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Random Number Generator

Generate random integers in any range right in your browser. Set min, max, and count, with an option for unique…

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Morse Code Translator (Text to Morse and Back)

Free Morse code translator that converts text to Morse code and decodes Morse back to text instantly in your browser.…

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Meeting Time Zone Planner

Free meeting planner for time zones. Enter one meeting time and see the matching local time across major world cities,…

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HEX to Color Name (Nearest Named Color)

Convert any hex code to its nearest CSS named color with RGB and HSL values. Type a hex or pick…

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Cron Expression Generator

Free cron generator: pick a plain-English schedule and get a valid five-field cron expression with a description and field legend.…

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Color Palette Generator

Free color palette generator. Pick a base color and a harmony scheme to build a matching five-color palette with hex…

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Whitespace and Line Break Remover

Remove line breaks, extra spaces, tabs, and blank lines from text with five cleanup modes. Free in-browser tool, nothing you…

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Text Diff Checker (Compare Two Texts)

Free text diff checker that compares two texts line by line in your browser and marks every added, removed, and…

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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,…

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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…

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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…

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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…

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Keyword Density Checker

Paste your text into this free keyword density checker to see your total word count and the top terms with…

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Duplicate Line Remover

Remove duplicate lines from any text or list in your browser. Keep the first occurrence, with options for case sensitivity,…

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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,…

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CSS Text Shadow Generator

Free CSS text shadow generator. Adjust horizontal and vertical offset, blur, color, and opacity with live preview, then copy the…

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Lorem Ipsum Generator

Free lorem ipsum generator. Create placeholder text by paragraphs, sentences, or words right in your browser. Pick a count, copy…

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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…

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Hexadecimal Calculator

Free hex calculator. Add, subtract, multiply, divide, AND, OR, or XOR two hexadecimal numbers and read the result in hex,…

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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…

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CSS Grid Generator

Free CSS grid generator. Set columns, rows, gap, and alignment, see a live preview, and copy the grid-template CSS code.…

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Binary Calculator

Free binary calculator. Add, subtract, multiply, divide, or apply AND, OR, and XOR to two binary numbers and see the…

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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…

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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…

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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…

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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…

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HTML Encoder and Decoder (Escape HTML Entities)

Free HTML encoder and decoder. Escape HTML entities like & < > " ' to display code safely or reverse…

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CSS Box Shadow Generator

Free CSS box shadow generator with live preview. Drag offset, blur, spread, color, opacity, and inset to build the exact…

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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…

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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…

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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,…

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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…

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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…

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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,…

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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…

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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…

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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…

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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…

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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…

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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…

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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…

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