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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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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