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bolt.io

https://bolt.io· First analyzed 31 May 2026· Updated 31 May 2026
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bolt.io
Desktop screenshot of bolt.io
Mobile screenshot of bolt.io
Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

3.234.189.133

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Cargo

Nameservers

ns2.cargo.site.ns1.cargo.site.

Performance

92

Core Web Vitals

Weight

First Contentful Paint
1.3 s10%
Speed Index
1.7 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
146 KB
20 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Cargo

Technology Stack

4 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Google Tag Manager

Languages

1
Go

SEO Analysis

D59/100
16
8
1
Meta Tags10/15
Content3/12
Headings8/8
Technical16/25
E-E-A-T0/7
Images2/7
Links4/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
B
bolt.iobolt.io

Bolt - Investing at the intersection of the digital and physical world

Bolt: Investing at the intersection of the digital and physical worlds

Title Length70 chars

Recommended: 50-60 chars (~412px / 580px)

Description Length70 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (1/1) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

2 URLs

robots.txt

28 rules

Sitemap reference found

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

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

Sponsored

AI & LLM Readiness

F30/100
Bot Access
20/25
Machine Read.
2/25
Schema Data
0/25
Citation
8/25

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.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:1%
Words:105
Token eff.:Too Short
Sections/1K:19

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 88w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
D
54/100
8
Passed
6
Critical
0
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
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
7/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
75/100
A+
15 mg
CO₂e / view
145.6 KB
Page Weight
95%
Cleaner Than
New Visitor
17 mg
vs
Returning (cached)
8 mg
Annual (10K/mo)
1.8 kg
Emission Segments
Data Center
<0.001 g
Network
4 mg
Device
10 mg
Resource Breakdown
JavaScript
106.3 KB
HTML
21.2 KB
Other
18.0 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

84d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

26.05.2026

Valid Until

24.08.2026

Subject Alternative Names (1)

bolt.io

SHA-256 Fingerprint

F7:DF:14:37:03:E8:BF:B2:91:E8:BF:1F:32:DB:69:1B:F8:EC:B3:64...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-headers
origin, x-requested-with, content-type
access-control-allow-methods
GET, HEAD, OPTIONS
content-encoding
📦 Gzip(gzip)
content-length
21420
content-type
text/html; charset=UTF-8
date
Sun, 31 May 2026 13:17:59 GMT
Good Warning Issue

Email Infrastructure

Google Workspace

Score

50

SPF
DKIM
DMARC

MX Records (5)

aspmx2.googlemail.com
aspmx.l.google.com
alt1.aspmx.l.google.com
alt2.aspmx.l.google.com

+1 more

Domain Information

bolt.io

Domain Age
13y 5m

Created

14.12.2012

Expires

14.12.2026

Last Updated

21.10.2025

Registrar

101domain GRS Limited

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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.
D
51/100
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
initial-scale=1.0, maximum-scale=1.0, user-scalable=no
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Icons + Times New Roman

WCAG Partial
67/100
Readability
/30
15/30

12px · LH --

Hierarchy
/20
18/20

3.4x ratio · ✓ H1→H6

WCAG
/25
17/25

2.03:1 min contrast

Performance
/25
17/25

System fonts

Heading Font

Icons

Sans39px

Body Font

Times New Roman

Serif12px

Contrast Ratio

2.03:1

1 issue

Reading Comfort

Sans Headlines + Serif Body

left aligned
39px
h1
21px
h2

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 2.0:1).

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

✅ Strong hierarchy: Headlines are 3.4x larger than body text.

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

✅ Variable fonts: Single file replaces multiple weights — better performance & flexibility.

Buy on MyFontsVariable Fonts

Color Palette

6 unique colors
7.46:1 AAA Light
#ffffff
Background· 91.59999999999997%
#555555
Other· 1.2%
#e7e5dc
Primary· 1.6%
#d2cbb3
Secondary· 1.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

10 Resources

9
Scripts
1
Styles
7
Async
0
Defer

Top Script Sources

static.cargo.site(3)local(3)googletagmanager.com(2)google-analytics.com(1)

Website Identity

bolt.io

13 years old
Location detected: 🇺🇸 United Statesvia ip
101domain GRS Limited📧 Google Workspaceen

Social Profiles

X (Twitter)

Sponsored

Last analyzed: 31 May 2026 at 13:18

Historical Analysis & Change Tracking

bolt.io Technology Stack - Built With Google Analytics, Google Analytics 4, Go, Google Tag Manager | StackOptic | StackOptic