Estimate compression level
A Chrome browser extension that estimates the HTTP compression level of the page.
Estimate compression level란 무엇입니까?
Estimate compression level은(는) Leon Brocard에 의해 개발된 Chrome 확장 프로그램으로, 주요 기능은 "A Chrome browser extension that estimates the HTTP compression level of the page."입니다.
확장 프로그램 스크린샷
Estimate compression level 확장 프로그램 CRX 파일 다운로드
크롬 확장 프로그램을 crx 형식으로 다운로드하여 브라우저에 수동으로 설치하거나 crx 파일을 친구들과 공유하여 쉽게 크롬 확장 프로그램을 설치하세요.
확장 프로그램 사용 설명서
Background
Compression is a core feature of HTTP that improves transfer speed, cache bandwidth utilization and cache utilization.
Lossless data compression algorithms development led to the LZW algorithm (1984), used by the compress application (1985), and then the PKZIP application (1991) with its DEFLATE algorithm which was then used in the gzip format (1992). The zlib library (1995) became a de facto standard compression library for gzip data.
HTTP/1.1 in 1999 (RFC 2616) added support for gzip, compress and deflate compression as content encodings. gzip compression quickly became the default as it compressed better than compress, which used the patented LZW algorithm, and as Microsoft incorrectly implemented deflate as a broken raw deflate stream instead of the correct deflate stream inside a zlib format wrapper.
Compression algorithms generally define a file format and how to decompress it. This allows the user to pick an appropriate compression level: either fast compression, which compresses quickly, but doesn't compress very small or instead best compression, which compresses slowly but generates a smaller output.
With gzip and zlib these levels range from 1 (fast) to 9 (best), with a default of 6.
When you browse to a page with this extension and the content is compressed with gzip, a little badge is shown with the estimated compression level.
If the compression was achieved with a gzip compressor other than zlib, a fractional estimate of zlib compression level is shown.
How does it work?
The chrome extension notes the Content-Length of the page as it is loaded, then fetches the page again, tries to compress it with a variety of levels and then displays the result.
This uses more network and CPU. Use sparingly.
TODO
Some websites use the newer Brotli compression algorithm instead of gzip. This extension does not support Brotli yet. 확장 프로그램 기본 정보
| 이름 |  Estimate compression level |
| ID | lgogndmdpoegjafbbedeedmeofohbopo |
| 공식 URL | https://chromewebstore.google.com/detail/estimate-compression-leve/lgogndmdpoegjafbbedeedmeofohbopo |
| 설명 | A Chrome browser extension that estimates the HTTP compression level of the page. |
| 파일 크기 | 520 KB |
| 설치 횟수 | 98 |
| 현재 버전 | 0.0.1 |
| 최근 업데이트 | 2022-03-17 |
| 출시 날짜 | 2022-03-17 |
| 평점 | 1.00/5 총 1 개의 평점 |
| 개발자 | Leon Brocard |
| 이메일 | [email protected] |
| 결제 유형 | free |
| 확장 프로그램 웹 사이트 | https://github.com/fastly/chrome-extension-estimate-compression-level |
| 도움말 페이지 URL | https://github.com/fastly/chrome-extension-estimate-compression-level |
| 지원되는 언어 | en |
| manifest.json | |
{
"update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
"manifest_version": 3,
"name": "Estimate compression level",
"version": "0.0.1",
"action": {
"default_icon": {
"128": "images\/128.png"
}
},
"description": "A Chrome browser extension that estimates the HTTP compression level of the page.",
"icons": {
"128": "images\/128.png"
},
"background": {
"service_worker": "background.js",
"type": "module"
},
"host_permissions": [
"http:\/\/*\/*",
"https:\/\/*\/*"
],
"permissions": [
"webRequest",
"webNavigation"
]
} | |
