Is tool.lu secure (HTTPS)?

Yes. tool.lu uses TLS 1.2 with a certificate issued by Asseco Data Systems S.A., valid until Feb 10, 2027.

Hosting provider information for tool.lu is not available yet.

What is tool.lu's SEO score?

tool.lu scored 75/100 for SEO in the latest analysis (fair).

What is tool.lu's overall website score?

tool.lu has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.

tool.lu

在线工具 - 你的工具箱

Last scanned Jul 26, 2026, 5:47 AM · 1 view

Overall score

Excellent

Summary

在线工具,开发人员工具,代码格式化、压缩、加密、解密,下载链接转换,json格式化,正则测试工具,favicon在线制作,字帖工具,中文简繁体转换,迅雷下载链接转换,进制转换,… This website uses Nginx. SEO is good (75/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

在线工具,开发人员工具,代码格式化、压缩、加密、解密,下载链接转换,json格式化,正则测试工具,favicon在线制作,字帖工具,中文简繁体转换,迅雷下载链接转换,进制转换,二维码,照片压缩,pdf合并

Top issues to fix

7 issues found

Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
1 cookie without Secure/HttpOnly flags
Security
Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

+1 more issue — details in the sections below.

SEO

4 issue(s) found

100

Performance

324 ms

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

Meta tags

Title: 在线工具 - 你的工具箱
Description: 在线工具,开发人员工具,代码格式化、压缩、加密、解密,下载链接转换,json格式化,正则测试工具,favicon在线制作,字帖工具,中文简繁体转换,迅雷下载链接转换,进制转换,二维码,照片压缩,pdf合并
Canonical: https://tool.lu/
Language: zh-Hans
Charset: UTF-8
Viewport: width=device-width,initial-scale=1.0,maximum-scale=1.0,maximum-scale=1.0,user-scalable=no,viewport-fit=cover
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Nginx

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.2
Issuer: Asseco Data Systems S.A.
Subject: *.tool.lu
Valid from: Jan 11, 2026
Valid to: Feb 10, 2027
Days until expiry: 196
SAN domains: *.tool.lu, tool.lu

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyEnabled
X-Frame-OptionsMissing
X-Content-Type-OptionsEnabled
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 8 · H3 32

Links

62 internal · 9 external · 20 broken

Images

29 total · 0 missing alt

Scripts / Styles

8 scripts · 4 stylesheets

JS / CSS size

1.2 KB · 0 B

Page size

62.7 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Meta description longer than 160 characters
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://tool.lu
Final URL: https://tool.lu
HTTP status: 200
HTTP version: HTTP/2
Response time: 323 ms
HTML size: 62.7 KB
Redirect chain: https://tool.lu

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does tool.lu use?: tool.lu is built with Nginx.
Is tool.lu secure (HTTPS)?: Yes. tool.lu uses TLS 1.2 with a certificate issued by Asseco Data Systems S.A., valid until Feb 10, 2027.
Who hosts tool.lu?: Hosting provider information for tool.lu is not available yet.
What is tool.lu's SEO score?: tool.lu scored 75/100 for SEO in the latest analysis (fair).
What is tool.lu's overall website score?: tool.lu has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.