70 fast utilities. No sign-up, no limits, no catch. From DNS, SSL and domain checks to formatters and converters, built by the team behind Uptimeify, hosted on European infrastructure.
Made and Hosted in the
European Union
GDPR-Compliant Hosting
in Germany
GEO-Redundant Replica
across the EU
71 tools
WHOIS, registration and domain age insights.
Record lookups, propagation and reverse DNS.
Query A, AAAA, MX, TXT, NS and more for any hostname.
Check how a DNS change has propagated across global resolvers.
Resolve an IP address back to its PTR hostname.
Full DNS record sweep and health check for a domain.
Check the mail servers (MX records) for a domain.
Inspect the SOA record and serial of a DNS zone.
Ping, ports, routing and everyday ops checks.
Headers, parsing and request inspection.
Verify certificates, emails and inputs.
Validate certificate chain, expiry and hostname for any site.
Check syntax, MX records and deliverability signals for an address.
Test regular expressions and inspect capture groups live.
Validate YAML syntax and catch indentation errors.
Check JavaScript for syntax errors.
Query JSON with JSONPath expressions.
Evaluate XPath expressions against XML.
Check a site's HTTP Strict Transport Security header.
Check clickjacking protection (X-Frame-Options / CSP).
Audit cookie Secure, HttpOnly and SameSite flags.
Validate a domain's SPF record for email deliverability.
Check a domain's DKIM signature record.
Analyze a domain's DMARC policy and alignment.
Beautify and minify code and data.
Beautify, minify and validate JSON in your browser.
Format and prettify SQL queries for readability.
Beautify or minify XML markup.
Beautify and tidy HTML markup.
Minify JavaScript to shrink file size.
Minify CSS to reduce payload size.
Compress JSON down to a single line and see the savings.
Minify HTML markup to reduce page weight.
IP, hosting and infrastructure intel.
Audit, count and analyze page content.
Audit title, description, Open Graph and Twitter card tags.
Count words, characters and estimated reading time.
Check whether a word or phrase appears on any web page, instantly.
Measure the download size of any web page: wire and decoded.
Handy everyday utilities.
Convert an SLA uptime target into allowed downtime per day, month and year.
Generate strong, random passwords with configurable rules.
Generate a PGP key pair right in your browser.
See how much downtime budget is left this month.
Estimate hosting bandwidth from traffic and page size.
Estimate download time from file size and connection speed.
Convert between formats, time and encodings.
Convert between Unix time and human-readable dates, both ways.
Encode and decode Base64 strings instantly (UTF-8 & URL-safe).
Build a crontab schedule, read it in plain English and preview the next runs.
Percent-encode and decode URLs and query strings.
Escape and unescape HTML entities.
Escape and unescape JavaScript string literals.
Escape and unescape XML strings.
Convert between YAML and JSON in both directions.
Convert CSV to JSON, XML, YAML or SQL.
Generate TypeScript, Go, Python or JSON Schema types from JSON.
Convert IPv4 between dotted, integer, hex and binary notation.
Compress and expand IPv6 addresses (RFC 5952).
Convert between bytes, KB, MB, GB, TB and more (decimal & binary).
Analyze thread and goroutine dumps.
HTTP status codes and reachability checks.
Explain any HTTP status code and what it means.
Is it down for everyone, or just you? Check a site from our network.
Check a site over both HTTP and HTTPS and see if it upgrades to HTTPS.
Measure how fast any URL responds, with min, avg and max.
Yes. All 70 tools run with no account, no payment details and no usage limit. Open a tool, enter your domain, IP or text and get an instant result. We build these utilities as an open toolbox for DevOps and web professionals, not as a funnel with a paywall behind it.
The team behind Uptimeify, a monitoring platform for agencies and MSPs. The same people who run our probing infrastructure build these tools, because we rely on them in our own daily work. The collection stands on its own: you need no Uptimeify account to run a WHOIS, an SSL check or a JSON formatter.
Check domains and DNS, validate SSL certificates and email setups, test networks, format code and data, convert between formats and calculate SLA or bandwidth figures. The collection spans domain, DNS, sysadmin, developer, validation, formatter, cloud, content, converter, thread-dump and status tools. Use the category filter at the top to reach the right utility faster.
No. Formatters, converters and generators run directly in your browser, so your input never leaves your device. Tools that need a live query, such as DNS, WHOIS or SSL checks, reach the target host from our European infrastructure. Everything is hosted in Frankfurt, on a European stack without US sub-processors with data access.
Yes. The collection grows around what users ask for. If a utility is missing, tell us: we prioritise what web professionals need most often in daily work. The suggestion button sits at the bottom of the page.
For the technical evaluator
These tools give you a snapshot. Uptimeify checks the same things every minute, from nine European locations, and confirms across them before it wakes you. Missing a tool? Tell us.
