561+ free browser tools. Pick one. Get it done.

Toololis is a free collection of 561+ browser-based utility tools. It was built by Atilla Kuruk, a full-stack developer focused on privacy-first web apps. The platform serves professionals, students, and everyday users. It covers PDF, image, developer, calculator, and text tasks.

Every tool runs in your browser. There are no uploads, no signups, and no hidden costs. Under the hood, Toololis uses the File API, Canvas API, and Web Workers. It also works offline as a Progressive Web App.

Key Takeaways

• Tool count: 561+ tools across 11 categories.
• Privacy: Zero data uploads. Files never leave your device.
• Offline: Install as a PWA for instant offline access.
• Mobile-first: Optimized for phones, tablets, and desktop.
• Open source: Code available on GitHub.

How Do I Use Toololis?

Getting started takes about 5 seconds. No account is needed.

1. Search or browse: Type in the search bar. Or scroll by category. Press / to focus search.
2. Open the tool: Click any card. It loads instantly.
3. Enter your data: Paste text, type values, or select a file.
4. Get your result: Copy, download, or share it.

What Tool Categories Are Available?

Toololis organizes 561+ tools into 11 categories. Each one focuses on a specific task type.

PDF Tools (30+)

Merge, split, compress, and convert PDFs. Powered by pdf-lib.

Image Tools (60+)

Resize, compress, convert, and crop images. Uses the Canvas API.

Developer Tools (80+)

JSON formatting, Base64 encoding, regex testing, and code minification.

Calculator Tools (100+)

Math, finance, health, unit converters, and science calculators.

Text Tools (50+)

Word counting, case conversion, and text comparison.

AI Tools (40+)

Content generators, headline scorers, and prompt builders.

SEO & Web Tools (30+)

Meta tag generators, sitemap builders, and schema markup tools.

Toololis at a Glance

Is Toololis Really Private?

Yes. Every tool runs 100% in your browser using JavaScript. No data is ever sent to any server.

This matters. According to Pew Research (2019), 79% of Americans worry about how companies use their data. A Cisco study (2023) found that 86% of consumers want more control. Many actively choose privacy-first alternatives.

"The best way to protect user data is to never collect it."

— Google Web Fundamentals

Toololis follows this principle. There is no database and no user accounts. Your files stay on your device from start to finish. A data breach is technically impossible.

Real-World Example: Merging PDFs Without Uploading

A freelance accountant needs to merge 12 client invoices into one PDF. Most online tools require uploading files to a server. This raises compliance concerns under GDPR.

With Toololis PDF Merge, all 12 files are combined in the browser. The merged PDF is ready in seconds. No file leaves the laptop. Client financial data stays safe.

This pattern applies across all tools. Resize images, format JSON, convert CSV files, or calculate loans — every operation happens locally. The result: faster processing, full privacy, and no server dependency.

Our Recommendation

You should try Toololis for everyday tasks. It handles PDF edits, image conversions, text formatting, and calculations. Tools load in under two seconds. They work on phones, tablets, and desktops without installation.

On the other hand, desktop apps may suit very large files (500 MB+). They also handle batch processing of thousands of documents better. For most users, freelancers, and small teams, browser tools are the best fit. They offer speed, privacy, and zero setup overhead.

Tip: Install Toololis as a PWA for offline access. Press / to search all 561+ tools instantly.

Last updated: April 25, 2026