Most used
Popular free online tools
Work faster
Quick workflows
Code & data
Developer Tools
JSON Formatter & Validator
Beautify, minify and validate JSON with syntax error detection.
Base64 Encoder / Decoder
Encode text or files to Base64, or decode Base64 strings instantly.
UUID / GUID Generator
Generate random v4 UUIDs one at a time or in bulk up to 100.
Regex Tester
Test regular expressions against text and see all matches highlighted.
Diff Checker
Paste two texts and see exactly what changed, line by line.
URL Encoder / Decoder
Encode special characters for URLs or decode encoded query strings.
JWT Decoder
Decode and inspect JSON Web Token headers, payloads and expiry.
Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text.
Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal.
CSV to JSON Converter
Paste CSV data and instantly convert it to formatted JSON.
Cron Expression Explainer
Explain cron expressions in plain English and preview run times.
Writing & content
Text & Writing Tools
Word & Character Counter
Count words, characters, sentences, paragraphs and reading time.
Markdown Previewer
Write Markdown and see rendered HTML preview side by side.
Lorem Ipsum Generator
Generate placeholder text by paragraphs, sentences or words.
HTML Entity Encoder
Encode plain text to HTML entities or decode entities back to text.
Generate & convert
Conversion & Generation
Password Generator
Create strong, random passwords with custom length and character sets.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and dates to timestamps.
CSS Minifier
Minify CSS to reduce file size and show savings percentage instantly.
Colour Picker & Converter
Pick colours visually and convert between HEX, RGB, HSL and HSV.
QR Code Generator
Generate QR codes for URLs or text and download as PNG.
New utilities
SEO, Business & Extra Developer Tools
YAML to JSON Converter
Convert YAML into formatted JSON.
JSON to CSV Converter
Turn JSON arrays into CSV.
JavaScript Minifier
Compress JavaScript for smaller files.
HTML Formatter
Format and indent HTML snippets.
SVG Optimiser
Clean and optimise SVG markup.
Text Case Converter
Convert text into common cases.
Meta Tag Preview
Preview SEO title and description snippets.
Open Graph Preview
Preview social share cards.
robots.txt Generator
Create crawler directives and sitemap lines.
UK VAT Calculator
Add or remove UK VAT rates.
Designed for everyday use
Why use UtilHub?
Private by design
Tool input is handled in your browser wherever possible, reducing unnecessary server processing.
Fast static pages
Each page is lightweight and can be served directly by Nginx for low-cost, high-scale hosting.
Easy to discover
Every tool has its own SEO-friendly URL, metadata, related links and helpful explanation content.
No installs
Open a tool, paste your input, get your output. No accounts, browser extensions or desktop apps.
Questions
Frequently asked questions
Are these tools free?
Yes. UtilHub tools are free to use and do not require an account.
Is my data uploaded?
The core tools are designed to process your input in the browser. Review the privacy policy for more detail.
Can I use these on mobile?
Yes. The layout is responsive and works on phones, tablets and desktops.
How is UtilHub funded?
The site may display advertising to cover domain, hosting and maintenance costs.
Free online tools for developers, creators and everyday tasks
UtilHub is built around high-demand utilities people search for every day: JSON formatting, password generation, Base64 conversion, QR code creation, word counting, regex testing, timestamp conversion, colour conversion, CSS minification and more. Each tool has a dedicated page, clear metadata and related links to help visitors move naturally between useful tasks.
Popular browser tools on UtilHub
- JSON Formatter & Validator for API debugging and configuration files.
- Password Generator for strong private passwords generated locally.
- QR Code Generator for URLs, text and downloadable PNG codes.
- Word & Character Counter for writers, students and SEO content checks.
- Unix Timestamp Converter for developers working with logs and APIs.
Built for low-cost scale
The site is static-first and client-side, so pages can be served directly by Nginx with minimal hosting overhead. That makes UtilHub fast for visitors and simple to maintain as search traffic grows.