A practical website toolbox
Choose a tool. All eight run locally in your browser.
URL encoder / decoder
Encode a URL component or decode percent-escaped text.
Website Tools · Browser toolBase64 encoder / decoder
Convert UTF-8 text to Base64 and back. Encoding is not encryption.
Hosting · Browser toolUptime & downtime calculator
Find allowable downtime for a target uptime over any period.
Hosting · Browser toolWebsite bandwidth calculator
Estimate transfer from page size and monthly page views.
Email · Browser toolSPF record explainer
Understand a pasted SPF record and spot basic structural issues.
Email · Browser toolDMARC record explainer
Read the policy and reporting settings in a pasted DMARC record.
Email · Browser toolSMTP error lookup
Understand a three-digit SMTP reply and choose a next check.
Website Tools · Browser toolXML sitemap inspector
Inspect pasted sitemap XML for structure and URL issues.
Live diagnostic checks
DNS lookup, nameserver and MX checks, DKIM verification, SSL inspection, HTTP headers and redirect chains need network access or a backend. They are not available in this version.
Use your hosting or email provider’s diagnostics for live checks. A pasted-record explanation is not a live domain test.