Most small tasks end the same way. You need to count the words in a caption, check a discount at checkout, or format a chunk of JSON, and the fastest option online wants an account first. A free trial. A credit card that "won't be charged, we promise." For a task that takes ten seconds once you're past the sign-up wall.
ARYX TOOLS skips that wall entirely. Every tool here runs in your browser tab, gives you the result the moment you type, and asks for nothing back. Below are the 19 tools live on the site right now, grouped by the kind of task they solve rather than dumped in one long list, so you can jump to whichever section matches what you're actually trying to do.
Cleaning up and formatting text
Text arrives messy more often than it arrives clean. A paragraph copied from a PDF brings stray line breaks with it. A list pasted from a spreadsheet drags duplicate rows along. This first group exists to fix exactly that, plus a few writing tasks that come up just as often.
Start with the Word Counter when a platform gives you a hard limit, a meta description at 160 characters, a bio at 150, an essay at 500 words. It counts characters, words, and sentences as you type, so you stop guessing and start reading the number itself. The Case Converter handles the opposite kind of problem, switching a heading between Title Case, Sentence case, and UPPERCASE without you retyping a single letter.
Two tools handle the cleanup itself. Remove Duplicate Lines scans a list and drops every repeat, which is the fast way to clean a pasted spreadsheet column or an email list that picked up copies along the way. Remove Extra Spaces does the same job for whitespace, collapsing double spaces and stray tabs that sneak in from a PDF or a Word document and quietly break formatting downstream.
Building a URL slug is its own small headache, and Text to Slug Converter turns a headline into a clean, lowercase, hyphenated link path in one pass. Text Repeater and Text Reverser cover smaller, stranger needs, repeating a line a set number of times or flipping text backward for a puzzle, a design mockup, or plain curiosity. Rounding out the group, the Lorem Ipsum Generator drops in placeholder paragraphs so a design mockup or a CMS template doesn't have to sit empty while you wait for real copy.
Everyday money math
Percentages look simple until you're standing at a register doing them in your head. Three tools remove that guesswork. The Percentage Calculator handles the general case, whatever percent of whatever number, in either direction. The Discount Calculatoris built for one specific moment, typing in a price and a percent off to see the exact amount you'll actually pay, stacked discounts included. The Tip Calculator finishes the meal out, splitting a bill and a tip across a table of any size so nobody has to do the division on a napkin.
A quick health and date check
The BMI Calculatorgives a fast estimate from height and weight, and it's worth reading as exactly that, an estimate. BMI does not separate muscle from fat, so it works best as a screening tool rather than a full picture of health, a point that the CDC's own guidance makes without hedging. The Age Calculator handles a plainer question, the exact years, months, and days between two dates, which turns out to be handy for more than birthdays: contract terms, eligibility cutoffs, and anniversaries all need the same math.
Two-minute developer tasks
Not every coding task deserves its own script. The JSON Formatter takes a wall of unindented JSON, pasted straight from an API response or a log file, and lays it out with proper indentation so the structure is readable at a glance and any syntax error stands out immediately.
The Base64 Encoder / Decoder gets used all the time and misunderstood almost as often. Base64 turns binary data into plain text characters so it can travel safely inside JSON, a URL, or an email attachment, and MDN's own documentation states this without hedging: it is encoding, not encryption. Anyone can decode it in seconds, no password required. Use this tool to move data around, not to keep it secret.
Design, color, and sharing
The Color Picker reads out a color in HEX, RGB, and HSL at once, so matching a shade from a screenshot or a brand guide takes one click instead of three separate lookups. The QR Code Generator turns a URL, a Wi-Fi password, or a plain block of text into a scannable code you can download and drop straight onto a flyer, a menu, or a business card.
One habit worth building
The Password Generator creates a random string with the length and character set you choose, and current guidance from NIST's password standard backs a simple approach: a longer password beats a shorter one stuffed with forced symbols and capitals. A long, random, unique password for every account beats a clever short one reused everywhere, and generating one takes about as long as reading this sentence.
A converter for the rest
Some conversions don't fit any category above, and the Unit Convertercovers them: length, weight, temperature, and more, switching between metric and imperial in either direction, so a search for "how many centimeters in an inch" stops being necessary.
Frequently asked questions
Yes. Every tool on ARYX TOOLS is free with no usage cap, no watermark, and no paid tier waiting behind a paywall. There is no trial period, because there was never a paid version to begin with.
No. Open the tool in a browser tab and use it. Nothing to install, no email to hand over, no password to set up just to count words or format a color code.
The tools listed here run their calculations in your own browser using JavaScript. Your text, numbers, or file never get uploaded to a server to produce the result. Closing the tab clears everything, since nothing was stored to begin with.
Yes. Every tool works on a phone or tablet browser the same way it works on a desktop, since the layout adjusts to the screen you're using.
No, and this trips people up often. Base64 encoding just represents data in a different set of characters. Anyone can decode it in seconds with no key or password required. If you need actual protection for sensitive data, encryption is the tool for that job, not Base64.
It's a screening estimate, not a diagnosis. BMI is calculated from height and weight alone, so it does not separate muscle from fat, and a muscular person can show a high number while carrying very little body fat. Use it as one data point among several, not the final word.
Bookmark whichever one you reach for most, since that is the one that will save you the most time. Writers tend to start with the Word Counter, developers with JSON Formatter, and shoppers with Discount Calculator.
More tools are being built and published regularly, so this list will grow. Check the categories menu at the top of the site for the current full set.