run any-tool --no-signup

Twenty browser tools.
Zero installs, zero cost.

SyntaxGenius is a free multi-tool workspace for writers and developers — word counters, generators and converters that run entirely on your device. Nothing you type ever leaves your browser.

syntaxgenius — zsh
syntaxgenius ~ $ run word-counter
> 128 words · 742 characters · ~1 min read
syntaxgenius ~ $ run password-gen --length 16
> xT9!kQmz2#Lp7vRw
syntaxgenius ~ $ run json-format --check
> valid JSON · 0 errors
syntaxgenius ~ $
Ad space — 728x90 leaderboard
./tools

Everything runs where you're standing

No accounts, no uploads to a server, no API keys. Pick a tool below and start using it immediately.

Word & Character Counter

Count words, characters, sentences and reading time instantly.

word-counter

Password Generator

Create strong, random passwords with custom rules.

password-gen

QR Code Generator

Turn any text or link into a downloadable QR code.

qr-gen

Unit Converter

Convert length, weight, temperature and speed units.

unit-convert

Case Converter

Switch text between UPPER, lower, Title and camelCase.

case-convert

JSON Formatter

Beautify, minify and validate JSON in your browser.

json-format

Base64 Encoder/Decoder

Encode or decode text and files to/from Base64.

base64

Color Picker & Palette

Pick colors and generate palettes in HEX, RGB and HSL.

color-picker

Markdown Previewer

Write Markdown and preview the rendered HTML live.

md-preview

Age & Date Calculator

Find your exact age or the days between two dates.

age-calc

Lorem Ipsum Generator

Generate placeholder text by paragraphs, sentences or words.

lorem-gen

Text Diff Checker

Compare two blocks of text and highlight the differences.

text-diff

CSS Gradient Generator

Build linear and radial gradients and copy the CSS.

gradient-gen

URL Encoder/Decoder

Encode or decode URLs and query string parameters.

url-encode

Random Number/List Picker

Generate random numbers or shuffle and pick from a list.

random-pick

BMI Calculator

Calculate Body Mass Index from height and weight.

bmi-calc

EMI / Loan Calculator

Calculate monthly loan payments from principal and rate.

emi-calc

Text-to-Slug Converter

Convert titles into clean, URL-friendly slugs.

slugify

Stopwatch & Timer

A simple countdown timer and stopwatch with laps.

timer

Percentage Calculator

Calculate percentages, increases, decreases and totals.

percent-calc
Ad space — responsive in-content
why-syntaxgenius

Built for speed, privacy and daily use

Runs on-device

Every tool executes in your browser with plain JavaScript — nothing is uploaded or stored on a server.

Free, forever

No sign-ups, no premium tiers, no usage limits. Use any tool as many times as you like.

Works everywhere

Fully responsive across phone, tablet and desktop, with a dark mode that's easy on the eyes.