Certified Website Score for

luttie.app

Generate and edit custom .cube LUTs in your browser. Color grading tool for video editors — color match, curves, HSL, and cinematic looks. Export to DaVinci Resolve, Premiere Pro, Final Cut Pro, and CapCut.

First audit: April 21, 2026•Last audit: May 10, 2026

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Overall

91Website Quality

70Trust & Security

91PageSpeed

Score trend

Latest audit — May 10, 2026

Deep, transparent insight into how this score is built: PageSpeed vitals, on‑page quality signals, and trust & security checks — all broken down into clear, verifiable items you can act on.

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Website Quality

1902

91/100

1902

Site Quality

Title

20/20

Luttie — LUT Generator & Color Grading Tool

43 chars (ideal 30–60)

Meta Description

6/15

206 chars (ideal 120–160)

Favicon

3/3

https://luttie.app/icon.png?fd93b4f4ccfda0b5

present

Viewport meta

8/8

width=device-width, initial-scale=1, viewport-fit=cover

correct (width=device-width, initial-scale=1)

robots.txt

6/6

User-Agent: * Allow: / Disallow: /api/ Sitemap: https://luttie.app/sitemap.xml

perfect (User-agent + Allow + Sitemap)

Sitemap

7/7

https://luttie.app/sitemap.xml

present

llms.txt

0/0

missing

missing (add llms.txt to describe LLM usage policies)

Headings

6/6

H1Color grade. Create LUTs.Use in DaVinci ResolveDaVinci Resolve

H2Your full color grading workflow. No download needed.

H3LUT Presets

H3RGB Curves

H3Color Wheels

H3HSL Secondary

H3Export .cube

H3Vignette

H2Pricing

H2Ready to color grade your footage?

correct structure

Schema.org JSON-LD

2/2

Software App: Luttie

1 schema found

Canonical URL

8/8

https://luttie.app

present

HTML lang

4/4

present

Character encoding

4/4

utf-8

present

Open Graph

Title

3/3

Luttie — Free LUT Generator & Color Grading Tool

present

Description

3/3

Generate custom .cube LUTs free in your browser. Color grading with color match, curves, and HSL — export to DaVinci Resolve, Premiere Pro, Final Cut Pro, and CapCut.

present

Image

3/3

https://luttie.app/og-image.png

present

URL

3/3

https://luttie.app

present

Type

1/1

website

present

Twitter Cards

Card Type

1/1

summary_large_image

present

Title

1/1

Luttie — Free LUT Generator & Color Grading Tool

present

Description

1/1

Generate custom .cube LUTs free in your browser. Color grading for DaVinci Resolve, Premiere Pro, Final Cut Pro, and CapCut.

present

Image

1/1

https://luttie.app/twitter-image.png

present

Trust & Security

502

70/100

502

Security Headers

HTTPS

30/30

HTTPS enabled

HTTP Strict Transport Security

15/15

Strict-Transport-Security: max-age=31536000; includeSubDomains

Content Security Policy

15/15

Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-inline' https://*.clerk.com https://*.clerk.accounts.dev https://clerk.luttie.app; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob: https://img.clerk.com; font-src 'self'; connect-src 'self' https://*.clerk.com https://*.clerk.accounts.dev wss://*.clerk.com https://clerk.luttie.app wss://clerk.luttie.app https://polar.sh https://api.polar.sh; frame-src 'self' https://*.clerk.com https://clerk.luttie.app https://challenges.cloudflare.com; ...

Frame Protection

5/5

X-Frame-Options: SAMEORIGIN

MIME Type Protection

5/5

X-Content-Type-Options: nosniff

Domain Trust

Domain Rating

0/25

How to improve DR→

no domain rating found

Domain Age

0/5

no domain age records found

Registrar

no registrar record found

Country

Unknown

Infrastructure

Provider

no hosting or CDN provider detected

PageSpeed

9727

91/100

9727

Performance

100

SEO

100

Best Practices

Accessibility

Performance

73/100

Largest Contentful Paint

1/25

7.2s

2.5s4.0s

First Contentful Paint

10/10

1.0s

1.8s3.0s

Total Blocking Time

29/30

126ms

200ms400ms

Cumulative Layout Shift

25/25

0.00

0.100.25

Speed Index

8/10

4.1s

3.4s5.4s

SEO

100/100

Page isn’t blocked from indexing

31/31

Document has a `<title>` element

8/8

Document has a meta description

8/8

Page has successful HTTP status code

8/8

Links have descriptive text

8/8

Links are crawlable

8/8

robots.txt is valid

8/8

Image elements have `[alt]` attributes

8/8

Document has a valid `hreflang`

8/8

Document has a valid `rel=canonical`

8/8

Best Practices

100/100

Uses HTTPS

19/19

Avoids deprecated APIs

19/19

Avoids third-party cookies

19/19

Allows users to paste into input fields

12/12

Avoids requesting the geolocation permission on page load

4/4

Avoids requesting the notification permission on page load

4/4

Displays images with correct aspect ratio

4/4

Serves images with appropriate resolution

4/4

Page has the HTML doctype

4/4

Properly defines charset

4/4

No browser errors logged to the console

4/4

No issues in the `Issues` panel in Chrome Devtools

4/4

Accessibility

90/100

`[aria-*]` attributes match their roles

5/5

`[aria-hidden="true"]` is not present on the document `<body>`

5/5

`[role]`s have all required `[aria-*]` attributes

5/5

`[role]` values are valid

5/5

`[aria-*]` attributes have valid values

5/5

`[aria-*]` attributes are valid and not misspelled

5/5

Buttons have an accessible name

5/5

Image elements have `[alt]` attributes

5/5

Form elements do not have associated labels

0/5

`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

5/5

ARIA attributes are used as specified for the element's role

4/4

`[aria-hidden="true"]` elements do not contain focusable descendents

4/4

ARIA input fields have accessible names

4/4

Elements use only permitted ARIA attributes

4/4

Background and foreground colors do not have a sufficient contrast ratio.

0/4

Document has a `<title>` element

4/4

`<html>` element has a `[lang]` attribute

4/4

`<html>` element has a valid value for its `[lang]` attribute

4/4

Links have a discernible name

4/4

Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

4/4

List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

4/4

No element has a `[tabindex]` value greater than 0

4/4

Touch targets have sufficient size and spacing.

4/4

Heading elements appear in a sequentially-descending order

2/2

Document does not have a main landmark.

0/2

Deprecated ARIA roles were not used

1/1

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