TheDevTools — Free Online Tools for Developers & Everyone

30+ free online tools combining powerful devtools for developers with everyday utilities for everyone. Whether you need a JSON formatter, PDF tools, color picker, unit converter, QR generator, image resizer, or text utilities — all browser-based, fast, and private. Built for developers, students, professionals, and anyone who needs quick, reliable online tools.

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AI Tools

Token Counter
Estimate the token count and cost for various LLMs like GPT and Claude.

Productivity

JSON
Format, validate, beautify, and minify your JSON data.
Markdown Preview
Write and preview Markdown text in a real-time, side-by-side editor.
Notepad
A distraction-free, minimal text editor for quick note-taking with offline persistence.
Diff Checker
Compare two text files to find differences.

General

QR Code Generator
Generate a QR code from a URL or text to easily share and scan.
Text Utilities
A suite of tools for easy text manipulation and analysis.
Unit Converter
Convert between various units like length, weight, and temperature.
Analog Clock
A simple and beautiful analog clock to display the current time.

Design

Color Tools
Pick colors, generate palettes, and convert between color models.
Image Resizer
Resize image dimensions, aspect ratio, and resolution in pixels.

Document

PDF Merge
Merge multiple PDF files into a single document. Drag-and-drop to reorder.
PDF Reader
Open and view PDF files in your browser. Inspect metadata and document properties.
PDF to DOCX
Convert PDF files to editable DOCX documents. Extract text in your browser with no uploads.
PDF Splitter
Split a PDF into multiple files by page ranges, every N pages, or extract individual pages.
PDF Metadata Editor
View and edit PDF metadata like title, author, subject, keywords, and dates.
PDF Signature
Add a visual signature to your PDF — draw, type, or upload a signature and place it on any page.
PDF Compress
Reduce PDF file size without losing quality. Adjust image resolution, quality, and more.
PDF Lock
Password protect any PDF — encrypt and set permissions, entirely in your browser.
PDF Unlock
Remove password protection from any PDF — unlock and save, entirely in your browser.

Other

Clock
A minimal digital clock displaying the current time.
Favicon Generator
Create favicons from text, image, or emoji. Download PNG at 16×16, 32×32, and 48×48.

Why Choose TheDevTools?

100% Free for Everyone

All tools run securely in your browser. We never collect, upload, or store your data. Complete privacy for developers and everyday users alike.

Fast & Versatile

Lightning-fast tools with no ads or bloat. From developer utilities to general-purpose tools - instant load times with a clean, minimal interface.

Always Improving

New tools and features for all users added regularly based on community feedback. DevTools and everyday utilities in one place.

From DevTools to Everyday Utilities - All in One Place

TheDevTools combines powerful developer-focused tools with practical everyday utilities. Developers can format JSON, compare code, and work with markdown. Students and professionals can merge PDFs, convert units, and resize images. Everyone can generate QR codes, use our color picker, countdown timer, or online notepad. All tools are optimized for speed and privacy, running entirely in your browser without any server uploads.

"Our mission: provide lightweight, productive tools with a simple UI and versatile functionality — for everyone, not just developers."

Frequently Asked Questions

What is TheDevTools?

TheDevTools is a free collection of 30+ online tools and utilities for everyone - from developer-focused devtools to general-purpose everyday utilities. Whether you're a developer needing a JSON formatter, a student working on PDFs, or anyone who needs quick online tools like QR generators or unit converters, we've got you covered. No signup or installation required.

Are these tools free to use?

Yes! All tools on TheDevTools are 100% free with no hidden costs, premium tiers, or subscription fees. Whether you need developer tools or everyday utilities, everything is freely accessible to everyone.

Do I need to create an account?

No account or signup required! All our online tools work directly in your browser. Simply visit TheDevTools, select any tool you need, and start using it immediately - whether you're formatting code or converting units.

Is my data safe when using these tools?

Absolutely! All TheDevTools utilities run entirely in your browser. We never upload, collect, or store any of your data on our servers. Whether you're working with sensitive code, personal documents, or images - your files and information remain 100% private and secure.

What types of tools are available?

TheDevTools offers a wide range of tools for everyone: Developer Tools (JSON formatter, diff checker, markdown preview), Design Tools (color picker, image resizer, favicon generator), PDF Tools (merge, split, compress, read), Text Utilities (case converter, word counter, text humanizer), and Everyday Utilities (unit converter, QR code generator, countdown timer, analog clock). Something useful for developers and regular users alike.

Can I use TheDevTools on mobile devices?

Yes! TheDevTools is fully responsive and works seamlessly on mobile phones, tablets, and desktop computers. Access all your favorite tools anywhere, anytime - whether you're coding on the go or need a quick unit conversion.

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