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Free tools and straightforward fixes for websites, domains, hosting and email.
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Useful tools, ready to use
All toolsURL 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.
Browse by problem
Straightforward technical fixes
All guidesHTTP 500: find the server-side failure
Use timing, logs and recent changes to narrow down a server error.
Website Errors · Guide403 Forbidden: check access before changing permissions
Find out why access is refused without opening up your entire website.
WordPress · GuideWordPress white screen: a careful recovery path
Find a fatal error and recover access while protecting your site and its data.
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