trpc.io

https://trpc.io· First analyzed 22 May 2026· Updated 22 May 2026

Export

trpc.io

Mobile

Sponsored

Hosting Provider

Vercel

vercel.com

IP Address

76.76.21.21

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

ns-cloud-a2.googledomains.com.ns-cloud-a3.googledomains.com.ns-cloud-a1.googledomains.com.ns-cloud-a4.googledomains.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

632 ms10%

Speed Index

822 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

455 KB

86 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

JAMstack

⚡ SSG

Frontend

Framework

Docusaurusv3.7.0

Styling

Tailwind CSS

Infrastructure

Platform

Vercel

Technology Stack

5 Technologies Detected

Analytics

Meta Frameworks

CSS Frameworks

Platforms

SEO Analysis

B72/100

Meta Tags9/15

Content10/12

Headings8/8

Technical17/25

E-E-A-T0/7

Images5/7

Links5/5

URL5/5

Social4/5

Freshness2/4

Mobile4/4

Indexability3/3

trpc.iotrpc.io

tRPC - Move Fast and Break Nothing. End-to-end typesafe APIs made e...

End-to-end typesafe APIs made easy. Automatic typesafety & autocompletion inferred from your API-paths, their input data, & outputs 🧙‍♂️

Title truncated.

Title Length78 chars

Recommended: 50-60 chars (~478px / 580px)

Description Length136 chars

Recommended: 120-160 chars

Issues (1)

• Title is too long (78 chars, ~478px). Will be truncated in search results.

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

577 URLs

robots.txt

Local SEO

Local Search Readiness

8/100

Poor

2 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D55/100

Bot Access

20/25

Machine Read.

19/25

Schema Data

0/25

Citation

16/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

blockquotescode blocksnav

Text ratio:7%

Words:1,392

Token eff.:Optimal

Sections/1K:16.5

Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary26w

Descriptive Headingsavg 3.4w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

AI readiness recommendation preview...

Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

A+

90/100

Passed

Critical

Warnings

Images & Alt Text

18/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

20/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

13/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

9/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

72/100

46 mg

CO₂e / view

455.3 KB

Page Weight

90%

Cleaner Than

New Visitor

53 mg

Returning (cached)

26 mg

Annual (10K/mo)

5.5 kg

Emission Segments

Data Center

2 mg

Network

14 mg

Device

30 mg

Resource Breakdown

JavaScript

377.4 KB

Images

28.2 KB

CSS

31.6 KB

HTML

18.1 KB

Green Hosting Verified

Vercel

Provider Match

3 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

76%Good

Static / Informational

HTTPS

No WAF

83d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.05.2026

Valid Until

13.08.2026

Subject Alternative Names (1)

trpc.io

SHA-256 Fingerprint

98:77:72:47:1D:ED:17:33:B9:FF:1B:E7:A6:78:47:18:6D:8C:06:89...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

age

2367631

cache-control

🟡 0s(public, max-age=0, must-revalidate)

content-disposition

inline

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (5)

aspmx.l.google.com

alt1.aspmx.l.google.com

alt4.aspmx.l.google.com

alt3.aspmx.l.google.com

+1 more

Domain Information

trpc.io

Domain Age

5y 3m

Created

25.01.2021

Expires

25.01.2027

Last Updated

30.01.2026

Registrar

Key-Systems GmbH

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

65/100

Mobile Friendly

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1.0

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial

83/100

Readability

/30

25/30

16px · LH 1.50

Hierarchy

/20

20/20

3x ratio · ✓ H1→H6

WCAG

/25

16/25

2.43:1 min contrast

Performance

/25

22/25

System fonts

Heading Font

-apple-system

Sans48px

Body Font

-apple-system

Sans16px

Contrast Ratio

2.43:1

4 issues

Reading Comfort

~41 CPL

Narrow lines

48px

30px

20px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 2.4:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 62

Color Palette

4 unique colors

18.88:1 AAA Light

#ffffff

Background· 55.8%

#111111

Background· 33.599999999999994%

#b7c0c8

Primary· 4.1%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

platform.twitter.com(2)local(2)googletagmanager.com(1)

Website Identity

trpc.io

5 years old

Location detected: 🇺🇸 United Statesvia ip

Key-Systems GmbH📧 Google Workspaceen

Social Profiles

X (Twitter)GitHub

Sponsored

Last analyzed: 22 May 2026 at 05:19

Historical Analysis & Change Tracking