Tools
Free online IT and developer tools that run entirely in your browser. Every tool works client-side, so nothing you paste or upload is ever sent to a server: they are fast, private, and free. The collection covers text and developer utilities, image and PDF tools, CSS and design generators, SEO helpers, AI and compute calculators, converters, and more. New tools are added regularly, and every one opens instantly with no signup.
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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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