Skip to content

Utilities

Free utilities that run in your browser

Quick, single-purpose utilities that do one job well, clean up text, sort a list, count words, convert numbers, generate UUIDs and slugs. Unlike most online tools, everything here runs entirely in your browser: what you paste is never uploaded, logged, or stored anywhere, which makes these safe for contracts, contact lists, tokens, and anything else you would rather keep to yourself. No account, no cost, and each tool keeps working even if you go offline after the page loads. Pick a tool below and paste away.

What makes these utilities different?

They are not AI tools, and they never send your data anywhere. Each one is a small, deterministic utility that runs completely in your browser, most online alternatives quietly upload what you paste to their servers first. Here, a contract you diff, a contact list you dedupe, or a token you Base64-decode stays on your device, full stop.

Word CounterPaste or type text and get live word, character, sentence, and reading-time counts, computed privately in your browser.Open Word Counter
Case ConverterSwitch any text between upper, lower, title, sentence, and code cases instantly, without your text leaving the page.Open Case Converter
Text CompareCompare two versions of a text and see every added, removed, or changed line marked, removals with − and additions with +.Open Text Compare
Lorem Ipsum GeneratorGenerate placeholder text to an exact length (by paragraphs, sentences, or words) and copy it in one click.Open Lorem Ipsum Generator
Base64 Encode & DecodeEncode text to Base64 or decode it back instantly, computed locally, so tokens and secrets never leave your device.Open Base64 Encode & Decode
URL Encoder & DecoderPercent-encode text for URLs or decode it back to readable form, with modes for full URLs and single components.Open URL Encoder & Decoder
Text ReverserReverse any text by characters, words, or lines, flipped instantly in your browser.Open Text Reverser
Remove Line BreaksClean unwanted line breaks out of pasted text (from PDFs, emails, or chat) while keeping real paragraphs intact.Open Remove Line Breaks
Remove Duplicate LinesPaste a list and remove every duplicate line, with case-sensitivity and ordering options, all locally.Open Remove Duplicate Lines
Alphabetize ListSort any list alphabetically, numerically, by length, or shuffle it, instantly and privately.Open Alphabetize List
Email ExtractorExtract every email address from pasted text, deduplicated and sorted, without the data ever leaving your browser.Open Email Extractor
URL ExtractorExtract every link from pasted text or HTML, deduplicated and listed one per line, entirely locally.Open URL Extractor
URL Slug GeneratorTurn a headline or title into a clean, SEO-friendly URL slug, with accents, symbols, and stop-words handled.Open URL Slug Generator
UUID GeneratorGenerate cryptographically random UUID v4 or time-ordered v7 identifiers, one at a time or in bulk.Open UUID Generator
Number to WordsConvert any number into written English words, including currency phrasing for checks and invoices.Open Number to Words
Roman Numeral ConverterTurn a date or number into Roman numerals (or decode numerals back) with tattoo-ready date formatting.Open Roman Numeral Converter
Binary TranslatorDecode binary into readable text or turn text into binary, with proper UTF-8 handling, entirely in your browser.Open Binary Translator
Reading Time CalculatorEstimate how long a text takes to read, with adjustable reading speed and silent versus read-aloud modes.Open Reading Time Calculator
Speech Time CalculatorWork out how long a speech or script takes to deliver, from a word count or pasted text, at your speaking pace.Open Speech Time Calculator
Words Per Page CalculatorConvert word counts into page counts (and back) for real fonts, sizes, and single or double spacing.Open Words Per Page Calculator
JSON to CSVPaste a JSON array and get spreadsheet-ready CSV with headers, converted privately in your browser.Open JSON to CSV
CSV to JSONPaste CSV data and get a clean JSON array back, with quoted fields and different delimiters handled.Open CSV to JSON
Markdown to HTMLConvert Markdown into clean HTML covering headings, lists, links, code, and emphasis, entirely locally.Open Markdown to HTML
Password Strength CheckerAnalyze a password's real strength (length, character variety, and weak patterns) without it ever leaving your browser.Open Password Strength Checker
Cron Expression GeneratorPick a schedule in plain language and get the crontab expression with an explanation of each field.Open Cron Expression Generator
Random Number GeneratorGenerate one or many random numbers in any range, with or without repeats, using real cryptographic randomness.Open Random Number Generator
Color ConverterPaste a color in HEX, RGB, or HSL and get every equivalent format back instantly.Open Color Converter
Timestamp ConverterConvert Unix timestamps to human dates and dates back to epoch seconds, in your timezone and UTC.Open Timestamp Converter
UTM Link BuilderEnter your URL and campaign details and get a correctly encoded UTM tracking link, built privately in your browser.Open UTM Link Builder
Unit ConverterConvert between metric and imperial units across length, weight, volume, temperature, speed, and data.Open Unit Converter
Time Zone ConverterConvert any date and time between world time zones, with daylight saving handled for you.Open Time Zone Converter
Percentage CalculatorCalculate percentages of numbers, percentage change, and increases or decreases, with the working shown.Open Percentage Calculator
Age CalculatorWork out an exact age in years, months, and days, plus total days lived and the countdown to the next birthday.Open Age Calculator
Aspect Ratio CalculatorCalculate matching dimensions for any aspect ratio and check whether two sizes will distort.Open Aspect Ratio Calculator
Business Days CalculatorCount the working days between two dates, with weekends excluded and clear counting options.Open Business Days Calculator
BMI CalculatorCalculate body mass index from height and weight, in metric or imperial, with reference ranges and honest caveats.Open BMI Calculator
GPA CalculatorEnter grades and credit hours and get a credit-weighted GPA on the 4.0 scale, with the working shown per course.Open GPA Calculator
Advertisement

Guide

How to pick from the utility drawer

These are not AI tools and that is the point. Each one is a small, deterministic gadget that does exactly the same thing every time, and every one runs entirely inside your browser, so what you paste never leaves your device.

The fastest way to choose is by what you are holding.

  • Got text? Reach for the Word Counter to check length against a limit, the Case Converter to fix capitalization in bulk, and the encode or decode utilities when you need to read or produce a token.
  • Got a number or measurement? The BMI Calculator and the unit converter turn one figure into another with no guesswork.
  • Building a link? The UTM builder stitches campaign parameters onto a URL correctly so your analytics actually track.
  • Need something random or secure? The Password Generator makes a strong string on the spot, right where you are working.

Across all thirty-seven, the shared benefits are the same. No account, no upload, no usage cap, and results that appear as you type because there is no server round trip. Once the page has loaded, most keep working even with your connection dropped.

What they are deliberately not. There is no intelligence here and no judgment. A counter counts and a sorter sorts, full stop. If your task needs understanding, interpretation or drafting, you want the AI tools in the other categories. These are the precise little knives you keep beside them for the jobs that should never be a guess.

FAQ

Frequently asked questions

Are these online tools really private?

Yes, in a way most are not: every utility here runs entirely in your browser, so what you paste is never uploaded, logged or stored on any server. Most online text tools process your input server-side, these cannot, by design, see it at all.

Are the utilities free with no sign up?

Yes. Every utility is completely free with no account, no email and no usage cap. Because they run on your device rather than our servers, there is no cost for us to meter, use them as much as you like.

Do these tools work offline?

Once a tool page has loaded, the utility itself keeps working without a connection, because all the processing happens locally in your browser. That also makes them fast: results appear as you type, with no round trip to a server.

Are these AI tools?

No, and we label them honestly. These are small, deterministic utilities (a word counter counts, a sorter sorts, an encoder encodes) with predictable results every time. The AI tools live in the other categories; these are the sharp little knives beside them.

Can I use them for sensitive text like contracts or contact lists?

That is exactly what they are built for. Because nothing you paste leaves your device, comparing contract drafts, deduplicating a contact list or decoding a token here avoids the exposure of pasting that material into a server-side tool.

What does it actually mean that these tools run in the browser?

It means the code that does the work is downloaded to your device and runs there, using your computer's own processor, rather than sending your input to a server to be processed. In practice your pasted text or file never travels across the network at all, which is why there is nothing to log or store. You can confirm it yourself by loading a tool, disconnecting from the internet, and watching it still work.

Why are these safer than the equivalent website that does the same thing?

Most online text tools process your input on their servers, which means your data is transmitted to and briefly held by someone else's machine, wherever that is and whatever their retention policy. Because these tools never send your input anywhere, that entire exposure disappears by design rather than by promise. For anything sensitive, like a contract clause or a contact list, that difference is the whole point.

Why call these utilities instead of AI tools?

Because they are deterministic, meaning the same input always yields exactly the same output, with no model making a probabilistic guess. A word counter will never miscount and a base64 decoder will never hallucinate, which is a genuinely different reliability guarantee from generative AI. We keep the labels separate so you know when you are getting a predictable result versus a drafted one that needs checking.

Advertisement