impots.gouv.fr

Readiness by lane

Green: impots.gouv.fr. Thin bar: Government Services peer median.

Priority fixes for impots.gouv.fr

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Harden

   HSTS kept for at least a year

   Observed: The homepage response did not include a Strict-Transport-Security header.

   Why it matters: HSTS tells browsers to use HTTPS for your host on every later visit, which removes the window where a first HTTP request can be intercepted.

   What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.

   51% of Government Services peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.

   Guide: HTTPS and TLS Guide for Website Owners

2. Priority 2 · Enable

   robots.txt published

   Observed: No robots.txt file was returned at the site root.

   What to do: Publish /robots.txt with any crawl rules you need and a Sitemap: line pointing to your XML sitemap.

   61% of Government Services peers do this.

   Guide: Robots.txt Guide: Control Crawling Without Hiding Mistakes

3. Priority 3 · Harden

   Framing restricted

   Observed: The homepage did not send frame-ancestors or X-Frame-Options, so other sites may frame it.

   What to do: Send Content-Security-Policy: frame-ancestors 'self' (or a list of trusted origins). X-Frame-Options: SAMEORIGIN covers older browsers.

   68% of Government Services peers do this.

   Guide: A Practical Website Health Check for Owners

4. Priority 4 · Enable

   XML sitemap discoverable

   Observed: No sitemap was listed in robots.txt or found at /sitemap.xml.

   What to do: Generate an XML sitemap of canonical URLs, reference it in robots.txt and submit it in Google Search Console.

   On WordPress: WordPress has generated a basic sitemap at /wp-sitemap.xml since 5.5; SEO plugins can replace it.

   42% of Government Services peers do this.

   Guide: XML Sitemap Guide: Include Only URLs You Stand Behind

What impots.gouv.fr already does well

Practices fewer than half of Government Services peers use.

• CAA records limit who can issue certificatesCAA limits issuance to certigna.fr, digicert.com, globalsign.com and others.17% of peers
• Reachable over IPv6IPv6 address published.27% of peers
• No render-blocking scripts in <head>Head scripts load without blocking.39% of peers

What we saw

Homepage checked

https://www.impots.gouv.fr/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

Sectigo, 198-day validity, expiring 2027-04-03

Platform or framework

WordPress

DNS operators

1 self-run or other nameserver domain

DMARC policy

p=reject

Homepage HTML

1,132 KB, gzip

Images on homepage

1

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

Stack and providers

Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.

All 31 checks

Select a gap for the method and fix. How each check works

Compare with other Government Services sites

• detran.sp.gov.br54
• funcionjudicial.gob.ec54
• iess.gob.ec54
• inail.it54
• national-id.gov.ph54

Government Services readiness benchmark