Free Online Tools That Respect Your Privacy

55+ fast, privacy-first tools for developers and everyday tasks. Everything runs client-side in your browser — no sign-up, no tracking, no server-side processing.

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Instant Results

Every tool runs client-side for instant feedback. No waiting for servers, no loading spinners. Your data stays on your device.

100% Private

Your data never leaves your browser. Privacy-first design with no accounts, no cookies, no analytics tracking your usage.

Works Everywhere

Responsive design that works on desktop, tablet, and mobile. No app downloads needed.

Popular Tools

The most-used tools across the collection.

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JSON Formatter
Format, validate, and beautify JSON data.
Password Generator
Generate secure, random passwords instantly.
QR Code Generator
Generate QR codes from text or URLs.
Mortgage Calculator
Calculate your monthly mortgage payments.
Website SEO Check
Extract and analyze SEO meta tags.
Word Counter
Count words, characters, and paragraphs.
Color Converter
Convert colors between HEX, RGB, HSL.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes.
Markdown Previewer
Write and preview Markdown in real-time.

Browse by Category

Developer Tools

13 tools

JSON, JWT, Base64, Regex, hashing, and more

Text Tools

12 tools

Counters, converters, sorters, and analyzers

Converters

7 tools

Colors, units, timestamps, and data formats

Calculators

12 tools

Mortgage, BMI, percentages, dates, and more

Generators

5 tools

Passwords, QR codes, palettes, and CSS tools

Productivity

5 tools

Timers, notepad, and emoji picker

Popular Free Online Tools

Privacy-first online developer tools that run entirely in your browser — no sign-up, no data collection, no server-side processing. Fast, private, and always free.

Try our free QR Code GeneratorPrivate JSON Formatter & ValidatorSecure password generator for 2026Calculate your mortgage paymentsPreview Markdown in real-timeWord counter for KDP and X threadsHEX to HSL converter for CSS variablesEncode and decode Base64 stringsSHA-256 hash generator for file verificationJSON to CSV converter for large filesTest regular expressions with live highlightingCharacter counter for X threads 2026

From the Blog

All posts

Why Client-Side Tools Are the Future of Developer Privacy

How privacy-first, browser-based tools protect your data and why developers are switching in 2026.

The Developer's Guide to Using HSL for CSS Variables

Learn why HSL is the best color format for CSS custom properties and dynamic theming.

How to Safely Verify File Integrity with SHA-256 Hashes

A practical guide to using SHA-256 hashes for file verification without uploading your files.