20 checks before putting your site online
· by the Agence Web Premium team, Guéliz Marrakech
Direct answer: Most problems discovered a month after launch are detected an hour before. Here are the 20 points we systematically check before each upload.
This list is the one we use internally. You can apply it to any site, including one you didn't make.
Technical — 6 checks
In short: HTTPS active, redirects in place, fast site on mobile, forms tested, backup configured, custom 404 error.
- Active HTTPS and automatic redirection from HTTP. No mixed content.
- Redirects old addresses in 301 if it is a redesign. This is the most costly mistake in SEO.
- Mobile speed verified in PageSpeed Insights. Objective: main content under 2.5 seconds.
- Forms tested in real conditions. Does the message really arrive, and in the inbox and not as spam?
- Autosave configured and tested before going online.
- Custom 404 page with a link to home and search.
Content — 5 checks
In short: Spelling proofread, exact contact details, up-to-date schedules, all functional links, optimized images.
- Spell proofreading complete. A mistake on the home page costs more credibility than you might imagine.
- Exact coordinates : clickable phone, correct address, working email. Test them all.
- Up to date schedules, consistent between the site and the Google page.
- No broken links. Check every internal and external link.
- Optimized images : actual dimensions, WebP format, alternative texts provided.
SEO — 5 checks
In short: Unique titles, written descriptions, only one H1 per page, submitted sitemap, correct robots.txt.
- Single title tag on each page, 50 to 60 characters, with the keyword and the city.
- Meta description written on each page, 150 to 160 characters.
- A single H1 per page, and a consistent H2/H3 hierarchy.
- Sitemap generated and submitted to Search Console.
- robots.txt checked. Le
Disallow: /has development been removed? This is the most common and serious oversight.
Legal and conversion — 4 checks
In short: Legal notices, privacy policy, compliant cookies banner, and contact button visible on each page.
- Legal notices complete and accessible from all pages.
- Privacy Policy actually describing the data collected.
- Cookie headband with refusal as simple as acceptance, and effective blocking before consent.
- Visible contact button on every page, without having to scroll. In Morocco, a floating WhatsApp button with pre-filled message.
This last point is the one that changes the number of contacts received the most. It is also most often forgotten.
The 20 points, by criticality
| Priority | Point | Consequence if forgotten |
|---|---|---|
| Critical | robots.txt blocking | Site invisible on Google |
| Critical | Missing 301 redirects | Loss of acquired SEO |
| Critical | Untested form | Requests never received |
| High | HTTPS inactive | “Not secure” displayed |
| High | Backup missing | Total loss in the event of an incident |
| High | Duplicated titles | Bad ranking |
| Average | Unoptimized images | Slow site |
| Average | Non-compliant cookie banner | Legal risk |
| Average | Little visible contact button | Lost contacts |
Internal checklist, version dated October 4, 2026.
Frequently asked questions
What is the most important check?
The robots.txt file. A Disallow: / forgotten since development makes the site completely invisible on Google.
What to do in the event of a redesign?
Set up 301 redirects for all old addresses. This is the most costly mistake in SEO.
How to test a form correctly?
Send a real message and make sure it goes to the inbox, not spam. Test from an external device.
Is the cookies banner obligatory?
As soon as you drop non-essential tracers. Refusal should be as simple as acceptance.
How long does this checklist take?
About an hour for a showcase website, more for a store.
Do I have to submit the sitemap manually?
Yes, it's free and it significantly speeds up indexing.
Why a personalized 404 page?
To keep the visitor who has the wrong address rather than losing them on a raw error page.
Do you do this check before delivery?
Yes, systematically, and we send you the result point by point.
We check your site before launch
Do you have a site ready to go? We pass the 20 points and send you the report. Free.
