About

What is UtilKit?

UtilKit (toolsaz.net) is a free collection of online tools for everyday, repetitive data tasks: splitting and cleaning email lists, converting between TXT and CSV, processing text, generating QR codes, shortening links and encoding Base64.

We built it for office workers, marketers, online shop owners, developers and anyone who needs a fast, simple tool with nothing to install and no account to create.

Our principles

Privacy first: most tools run entirely in your browser. Data you paste or upload is never sent to our servers. Only the URL Shortener has to store links in order to redirect visitors.

Free and simple: every tool is free, with no usage limits and no sign-up. The interface is available in English and Vietnamese.

Responsible use: the tools are designed for managing your own legitimate data. We do not support spam or the unlawful collection of personal data.

How do we keep it free?

UtilKit is supported by ads served through Google AdSense. Advertising pays for servers and the domain, and lets us keep building new tools without charging users. You can read how ads use data on our Privacy Policy page.

Feedback and contact

We would love to hear from you, whether it is an idea for a new tool, a bug report or a suggestion. Send us a message through the Contact page.

All tools

• Email File Splitter – Split a large email list evenly into smaller files
• Email Filter by Type – Separate Gmail, Yahoo, Outlook… into their own files
• Email Extractor – Pull every email out of messy text or documents
• Email Validator – Sort emails into valid / invalid syntax
• TXT ↔ CSV – Convert between text and spreadsheet formats
• Text Tools – Remove blank lines, duplicates, sort data
• QR Code Generator – QR codes for links, text, WiFi, email…
• URL Shortener – Create short links, track clicks
• Base64 – Encode and decode Base64