Free online tools, right in your browser
133+ fast, private utilities for developers, writers and everyone else. No signup, no uploads — everything runs on your device.
SmaftyTools is a free online tools platform with 133 utilities that run entirely in your browser. Tools include a JSON formatter, Base64 encoder, word counter, percentage calculator, currency converter, image resizer, PDF merger and compressor, meta tag generator, typing speed test and a coin flip — covering developer, text, math, converter, image, PDF, marketing, media and fun tool categories. Every tool processes data locally on your device: nothing is uploaded to a server, no account is required, and all tools are free with no usage limits.
What is SmaftyTools?
SmaftyTools is a free online tools platform that offers 133 browser-based utilities for developers, writers, students, designers and everyday users. It is a static website served from a global CDN, so every tool runs 100% client-side: whatever you paste, type or upload is processed locally on your own device and never sent to a server. The platform requires no account, no signup and no payment — every utility is free to use with no usage limits, supported by unobtrusive advertising.
The collection spans ten categories: developer tools (JSON formatting, Base64, regex, password and hash generation), text utilities, math and health calculators, unit and currency converters, image and color tools, PDF editing (merge, split, compress, watermark, protect), SEO and marketing utilities, media and device testers, time and productivity aids, and fun random tools.
Because the site is static, there are no backend servers to store or process your data — this privacy-by-design approach is what sets SmaftyTools apart from most tool websites, which upload files to remote servers.
Featured tools
View all →JSON Formatter
Format, validate and beautify JSON online. Free JSON formatter with indentation options and key sorting — runs entirely in your browser.
Base64 Encode/Decode
Encode text to Base64 or decode Base64 to text instantly. Free online Base64 converter — no upload, everything stays in your browser.
Password Generator
Generate strong, random passwords with custom length, uppercase, numbers and symbols. Secure client-side generation — nothing leaves your device.
Regex Tester
Test regular expressions against sample text with live match highlighting, flags and capture groups. Free online regex tester.
Word Counter
Count words, characters, sentences and paragraphs in real time. Free online word counter for essays, tweets and SEO content.
Basic Calculator
Free online calculator for quick everyday arithmetic — addition, subtraction, multiplication, division and percentages.
QR Code Generator
Create QR codes for URLs, text and Wi-Fi instantly, then download as PNG. Free client-side QR code generator — no watermark.
JWT Decoder
Decode JWT tokens online — view the header, payload and expiry instantly. Fully client-side, your token never leaves the browser.
Currency Converter
Convert between 35+ world currencies with daily-updated exchange rates. Free currency converter — USD, EUR, GBP, INR, JPY and more.
Age Calculator
Calculate exact age in years, months and days from a date of birth — plus total days lived and days until the next birthday.
Image Resizer
Resize images to exact pixel dimensions and download as PNG, JPEG or WebP. Free image resizer that runs entirely in your browser — no upload.
Invoice Generator
Create a professional invoice in your browser — line items, tax, discount and totals — then print or save as PDF. Free, no signup, no watermark.
Fancy Text Generator
Turn plain text into bold, italic, script, double-struck and other Unicode font styles for bios and captions. Free fancy text generator, copy-paste ready.
Merge PDF
Combine multiple PDF files into one, in any order you choose. Free PDF merger that runs entirely in your browser — your files are never uploaded.
Images to PDF
Turn JPG or PNG images into a single PDF, in the order you choose, with page size and margin options. Free image to PDF converter.
Mock Data Generator
Generate realistic fake names, emails, addresses and more as JSON or CSV — perfect for testing and demos. Free online mock data generator.
Meta Tag Generator
Generate title, description, Open Graph and Twitter Card meta tags with a live preview and length warnings. Free online meta tag generator.
UTM Link Builder
Build campaign tracking URLs with UTM source, medium, campaign, term and content parameters. Free UTM builder with link history.
Email Signature Generator
Create a professional, table-based HTML email signature with your name, title, contact details and social links — ready to paste into Gmail or Outlook.
Typing Speed Test (WPM)
Test your typing speed and accuracy against a random passage — see your words per minute update live. Free online typing test, no signup.
Screen Recorder
Record your screen and download it as a WebM video — no install, no account, no upload. Free online screen recorder that runs entirely in your browser.
Random Number Generator
Generate random numbers in any range, with optional no-repeat and cryptographically secure modes. Free online random number generator.
Wheel Spinner / Random Name Picker
Spin a wheel to randomly pick a name, option or winner from your own editable list. Free online wheel spinner and random name picker.
To-Do List
A simple, private to-do list that saves your tasks in your browser — no account, no sync, no clutter. Free online to-do list.
Pomodoro Timer
A free online Pomodoro timer with focus and break cycles, a session counter, notifications and sound when time's up.
Explore tools by category
Browse all →From developer utilities and text tools to calculators, converters, PDF editors and media tests — every tool works 100% client-side, so your data never leaves your device.