What to include on a freelance invoice
A freelance invoice needs a unique number, both parties' details, dates, clear line items, the total owed, and how to pay. Here is the full list, field by field.
Guides
Practical guides
Short, practical notes on the tools. Each one starts from a real job and ends at the tool that does it.
All guides
How to create an invoice PDF without an account
You do not need to sign up for an invoicing platform to send one invoice. Fill a form in the browser, download the PDF, and email it yourself.
How to calculate discount and tax on an invoice
Work out each line, take the discount, apply tax to what is left, round to the penny, then add shipping. A worked example with the order that keeps totals right.
How to inspect a website for health problems
Paste the site URL, crawl a sample of pages, and get a plain-English report of broken links, page errors, redirect defects, SEO basics, and SSL warnings.
What a website health report covers
A SiteCheck report lists broken links, HTTP errors, redirects, title and meta issues, H1s, robots, sitemap, TLS, mixed content, noindex, and canonicals.
Website inspection vs new-break link alerts
A full inspection lists every current defect on a crawl. New-break alerts stay quiet about known 404s and speak up only when a working link newly fails.
How to monitor a competitor's pricing page
Pricing pages change quietly. Watch the public URL, ignore the clocks and chat widgets, and get a diff when the price or plan text actually moves.
How to get alerted when a web page changes
Hand-checking and RSS both miss silent edits. Monitor the public URL, narrow it with a selector and ignore rules, and get a diff when the text changes.
How to monitor TLS certificate expiry
A certificate that expires takes the site down for anyone who trusts the browser warning. Watch the public URL and get an alert inside 14 days, then again at 3.
How to find newly broken links after a website migration
After a migration, the links that used to work and now 404 are the ones that hurt. Baseline the new site, then alert only when a link newly breaks.
Why broken-link checkers keep reporting the same broken links
A one-off crawl has no memory, so yesterday's 404 is today's finding. A baseline stores the known breaks and alerts only when a working link newly fails.
Website change monitoring vs broken-link monitoring
Change monitoring tells you a public page's text moved. Broken-link monitoring tells you a link that used to work now fails. They answer different questions.