Best Free Online Utility Tools in 2026
The best free utility tools cover the tasks you need occasionally but don't want to install an app for. Generate QR codes, create secure passwords, convert units, and compress images — all in your browser with no account needed.
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#1
5/5
Generate strong, secure passwords with custom length and character sets.
Best for: Anyone creating a new account who needs a strong, unique password
Pros
- Cryptographically secure (Web Crypto API)
- Custom length and character sets
- Nothing sent to server
Cons
- No password manager integration
#2
Unit Converterutility
4/5
Convert between length, weight, temperature, area, and volume units.
Best for: Engineers, students, and travellers needing quick unit lookups
Pros
- Covers 10+ unit types (length, weight, temp, volume, etc.)
- Instant conversion as you type
- High-precision output
Cons
- No currency conversion
Frequently Asked Questions
What is the best free QR code generator online?
Our QR Code Generator creates QR codes for URLs, plain text, Wi-Fi credentials, and contact cards. Download as PNG immediately — no signup, no watermark.
How secure is the Password Generator?
It uses the browser's built-in Web Crypto API (window.crypto.getRandomValues) which is cryptographically secure. The generated password is never transmitted to any server.
Which unit types does the Unit Converter support?
Length, weight/mass, temperature, volume, speed, area, data size, time, pressure, and energy — covering the most common everyday and engineering conversion needs.
Can I compress images without uploading them?
Yes. The Image Compressor reads and processes your image entirely in your browser using the Canvas API. Your photos never leave your device.
Is the QR code generator free for commercial use?
Yes. The tool is completely free for personal and commercial use with no attribution required.
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