Free tools

A handful of free utilities from Kawze. No account required.

These are small, standalone tools built alongside our uptime monitoring product - useful on their own for a quick one-off check, and handy if you're deciding whether ongoing monitoring makes sense for a site. No sign-up needed to use any of them.

Random String Generator

Generate random strings for IDs, hash keys, tokens, and passwords.

Is It Down?

Check whether a website is up or down right now, with status code and response time.

Is It Down For Everyone?

Live status widgets for 20 popular sites and services - Google, YouTube, Discord, and more - each with its own refresh button.

Base64 Encode / Decode

Convert text to Base64 or decode Base64 back to plain text.

JSON Formatter / Validator

Pretty-print and validate JSON with syntax highlighting, or minify it back down.

HTTP Status Code Reference

Every HTTP status code from 1xx to 5xx, searchable, with a plain-English description and a shareable link.

HTTP Header Reference

Common HTTP request and response headers, searchable, with a plain-English description and a shareable link.

What Is My IP Address?

Find your public IP address, plus ISP, city, region, and country if available.

Diff Checker

Compare two blocks of text or code and see a line-by-line diff with additions and removals highlighted.

Markdown to HTML Converter

Paste Markdown and get the rendered HTML output, with a live preview, side by side.

SSL Certificate Checker

Check a domain's SSL certificate - expiry date, issuer, and chain validity.

Cron Expression Explainer

Paste a cron expression and get a plain-English description plus the next 5 run times.

URL Encoder / Decoder

Encode text for safe use in a URL, or decode a URL-encoded string back to plain text.