Tools for the work
behind the work.
Practical tools, field guides, and operational references for networking, development, and systems work. Browse the workbench, learn a workflow, or find scoped technical support.
NETWORK / SYSTEMS / OPERATIONSStart with a useful tool.
Explore nine frequently used utilities below, or browse the full directory of 37 tools. Some services, including URL shortening and file conversion, use the JoeC server.
IPv4 Subnet Calculator
Calculate network, broadcast, usable range, and host count for an IPv4 CIDR prefix.
JSON Formatter & Validator
Validate, pretty-print, or minify JSON without uploading your data.
JoeC URL Shortener
Create expiring short links using the joec.pw domain with anti-abuse protection.
Image & File Converter
Make PDFs from images or convert PNG, JPG and WebP on-device. Optional Office and audio tools.
HTTP Response Header Review
Evaluate pasted response headers without scanning a live URL.
CIDR Split & Aggregate
Split IPv4 prefixes or combine adjacent networks.
SLA & Error Budget
Calculate allowable downtime for an availability target.
Incident Timeline Builder
Format time-ordered incident events and elapsed time.
JWT Claims Inspector
Decode unverified token claims locally.
Prefer a terminal? Explore 13 Linux and PowerShell diagnostic commands ↗
Know the cause. Use the right tool.
Practical infrastructure runbooks, incident workflows and trustworthy technical references, built to complement the free utility workbench.
Cloudflare Tunnel origin failures
Separate 502, 522 and 525 symptoms and follow a safe diagnostic sequence.
Build an incident timeline
Normalize timestamps and distinguish observed facts from working hypotheses.
PostgreSQL replication lag
Understand receive, flush and replay signals before declaring an outage.
New guides and updates are also available through the RSS feed.
Queries and runbooks for the work behind the tools.
Thirty copy-only examples for observability, SQL, search and read-only APIs; six downloadable diagnostic references.
Get the issue resolved.
Without guesswork.
Website behaving strangely? Migration stalled? Docker deployment broken? We provide scoped technical assistance with clear deliverables and no surprise open-ended project.
Simple from the first request.
Describe the issue
Share a brief description, urgency, and the platform involved. Never send passwords in your inquiry.
Confirm the scope
Receive a quote and work description. For uncertain issues, begin with a paid diagnostic.
Review the result
Get a concise completion summary and optional ongoing support recommendation.
Let's get your systems back on track.
Clear communication, practical solutions, and a manageable scope.