0 WINS / 0 LOSSES

Best HTML / CSS / JS Compression Tool

Up to 0% smaller than LZMA. 0 wins, 0 losses across real-world HTML / CSS / JS files. Lossless, verified, free to try.

Compress HTML / CSS / JS Free Full Benchmarks

Best Saving vs LZMA

Median Saving

0W / 0T

Win / Tie Record

Losses

How PZIP Compresses HTML / CSS / JS

PZIP separates web files into distinct streams — HTML tags, attributes, text content, inline scripts, styles, and comments. Each stream is compressed with the best of LZMA and Brotli. This stream separation gives Brotli cleaner input than raw files, beating standalone Brotli on all web assets.

Codec: Stream separation + Brotli

Lossless

Byte-exact round-trip verified on every file

Never-Worse

Falls back to LZMA if it can't beat it

Automatic

Type detection + codec selection is automatic

History of HTML / CSS / JS

Est. 1993Created by Tim Berners-Lee / W3C

HTML was created by Tim Berners-Lee in 1993. CSS followed in 1996, and JavaScript (now ECMAScript) in 1995. Together they form the foundation of every website. Compression of web assets directly impacts page load time, bandwidth costs, and user experience.

Compression Timeline

1993

HTML 2.0 — the first standard

1995

JavaScript created by Brendan Eich

1996

CSS 1.0 released

2015

Brotli released by Google for web compression

2026

PZIP beats LZMA by up to 27.3% on web assets

Real-World Benchmark Results

Every file tested with LZMA-9 (maximum compression) as baseline. Round-trip correctness verified on every file.

File	Size	PZIP vs LZMA	Result	Download
081-massive-table.html	314.0 KB	TIE	ERROR	Source
096-product-catalog.html	62.0 KB	TIE	ERROR	Source
Chart.bundle.min.js	189.1 KB	TIE	ERROR	Source
LibASTMatchersReference.html	545.3 KB	TIE	ERROR	Source
NumberFormat.prototype.formatToParts.js	62.8 KB	TIE	ERROR	Source
RecordRTC.js	189.8 KB	TIE	ERROR	Source
bootstrap-datetimepicker.js	104.1 KB	TIE	ERROR	Source
bootstrap.css	274.5 KB	TIE	ERROR	Source
bootstrap.min.css	106.9 KB	TIE	ERROR	Source
c_status.html	61.2 KB	TIE	ERROR	Source
china.js	59.1 KB	TIE	ERROR	Source
core-prototypes.js.html	80.0 KB	TIE	ERROR	Source
cxx_dr_status.html	944.3 KB	TIE	ERROR	Source
cxx_status.html	68.9 KB	TIE	ERROR	Source
date-af-ZA.js	131.6 KB	TIE	ERROR	Source
date-af-ZA.min.js	55.2 KB	TIE	ERROR	Source
date-ar-DZ.js	131.8 KB	TIE	ERROR	Source
date-ar-DZ.min.js	56.8 KB	TIE	ERROR	Source
date-ar-IQ.min.js	57.1 KB	TIE	ERROR	Source
date-ar-KW.js	131.8 KB	TIE	ERROR	Source
date-ar-LY.js	131.8 KB	TIE	ERROR	Source
date-ar-OM.js	131.8 KB	TIE	ERROR	Source
date-ar-OM.min.js	56.8 KB	TIE	ERROR	Source
date-ar-QA.min.js	56.8 KB	TIE	ERROR	Source
date-ar-SA.min.js	57.4 KB	TIE	ERROR	Source
date-ar-SY.min.js	57.1 KB	TIE	ERROR	Source
date-az-Cyrl-AZ.js	131.9 KB	TIE	ERROR	Source
date-az-Cyrl-AZ.min.js	56.8 KB	TIE	ERROR	Source
date-be-BY.min.js	56.8 KB	TIE	ERROR	Source
date-bg-BG.js	131.9 KB	TIE	ERROR	Source
date-bs-Latn-BA.js	131.6 KB	TIE	ERROR	Source
date-cs-CZ.min.js	55.3 KB	TIE	ERROR	Source
date-da-DK.min.js	55.1 KB	TIE	ERROR	Source
date-de-AT.min.js	55.3 KB	TIE	ERROR	Source
date-de-CH.js	131.6 KB	TIE	ERROR	Source
date-de-DE.js	131.6 KB	TIE	ERROR	Source
date-el-GR.js	132.0 KB	TIE	ERROR	Source
date-el-GR.min.js	57.2 KB	TIE	ERROR	Source
date-en-029.min.js	55.2 KB	TIE	ERROR	Source
date-en-AU.js	131.6 KB	TIE	ERROR	Source
date-en-IE.js	131.6 KB	TIE	ERROR	Source
date-en-JM.js	131.6 KB	TIE	ERROR	Source
date-en-JM.min.js	55.2 KB	TIE	ERROR	Source
date-en-PH.js	131.6 KB	TIE	ERROR	Source
date-en-TT.min.js	55.2 KB	TIE	ERROR	Source
date-en-ZA.js	131.6 KB	TIE	ERROR	Source
date-en-ZW.min.js	55.2 KB	TIE	ERROR	Source
date-es-AR.js	131.6 KB	TIE	ERROR	Source
date-es-BO.min.js	55.3 KB	TIE	ERROR	Source
date-es-CL.js	131.6 KB	TIE	ERROR	Source
date-es-CL.min.js	55.2 KB	TIE	ERROR	Source
date-es-CO.js	131.6 KB	TIE	ERROR	Source
date-es-CR.js	131.6 KB	TIE	ERROR	Source
date-es-CR.min.js	55.3 KB	TIE	ERROR	Source
date-es-DO.js	131.7 KB	TIE	ERROR	Source
date-es-DO.min.js	55.3 KB	TIE	ERROR	Source
date-es-EC.min.js	55.2 KB	TIE	ERROR	Source
date-es-ES.min.js	55.2 KB	TIE	ERROR	Source
date-es-GT.js	131.6 KB	TIE	ERROR	Source
date-es-HN.min.js	55.3 KB	TIE	ERROR	Source
date-es-MX.js	131.6 KB	TIE	ERROR	Source
date-es-PE.min.js	55.3 KB	TIE	ERROR	Source
date-es-PR.js	131.6 KB	TIE	ERROR	Source
date-es-PY.js	131.6 KB	TIE	ERROR	Source
date-es-PY.min.js	55.3 KB	TIE	ERROR	Source
date-es-SV.min.js	55.3 KB	TIE	ERROR	Source
date-es-UY.js	131.6 KB	TIE	ERROR	Source
date-es-UY.min.js	55.3 KB	TIE	ERROR	Source
date-es-VE.min.js	55.3 KB	TIE	ERROR	Source
date-eu-ES.js	131.7 KB	TIE	ERROR	Source
date-eu-ES.min.js	55.3 KB	TIE	ERROR	Source
date-fa-IR.js	131.6 KB	TIE	ERROR	Source
date-fi-FI.min.js	55.2 KB	TIE	ERROR	Source
date-fo-FO.js	131.6 KB	TIE	ERROR	Source
date-fo-FO.min.js	55.3 KB	TIE	ERROR	Source
date-fr-BE.min.js	55.3 KB	TIE	ERROR	Source
date-fr-CA.js	131.6 KB	TIE	ERROR	Source
date-fr-CA.min.js	55.2 KB	TIE	ERROR	Source
date-fr-MC.min.js	55.3 KB	TIE	ERROR	Source
date-he-IL.min.js	56.7 KB	TIE	ERROR	Source
date-hr-BA.js	131.6 KB	TIE	ERROR	Source
date-hr-HR.min.js	55.3 KB	TIE	ERROR	Source
date-id-ID.js	131.5 KB	TIE	ERROR	Source
date-is-IS.js	131.7 KB	TIE	ERROR	Source
date-it-CH.min.js	55.2 KB	TIE	ERROR	Source
date-it-IT.js	131.6 KB	TIE	ERROR	Source
date-ja-JP.js	131.5 KB	TIE	ERROR	Source
date-ka-GE.js	132.3 KB	TIE	ERROR	Source
date-kn-IN.js	132.3 KB	TIE	ERROR	Source
date-kn-IN.min.js	57.1 KB	TIE	ERROR	Source
date-kok-IN.min.js	57.0 KB	TIE	ERROR	Source
date-lv-LV.min.js	55.3 KB	TIE	ERROR	Source
date-mi-NZ.js	131.7 KB	TIE	ERROR	Source
date-mi-NZ.min.js	55.4 KB	TIE	ERROR	Source
date-mn-MN.js	132.0 KB	TIE	ERROR	Source
date-mn-MN.min.js	57.2 KB	TIE	ERROR	Source
date-ms-BN.js	131.5 KB	TIE	ERROR	Source
date-ms-BN.min.js	55.1 KB	TIE	ERROR	Source
date-nb-NO.min.js	55.2 KB	TIE	ERROR	Source
date-nl-BE.js	131.5 KB	TIE	ERROR	Source
date-nn-NO.js	131.5 KB	TIE	ERROR	Source
date-ns-ZA.js	131.6 KB	TIE	ERROR	Source
date-pt-BR.js	131.6 KB	TIE	ERROR	Source
date-pt-PT.js	131.6 KB	TIE	ERROR	Source
date-pt-PT.min.js	55.3 KB	TIE	ERROR	Source
date-quz-BO.js	131.7 KB	TIE	ERROR	Source
date-quz-BO.min.js	55.3 KB	TIE	ERROR	Source
date-quz-EC.js	131.7 KB	TIE	ERROR	Source
date-ro-RO.js	131.6 KB	TIE	ERROR	Source
date-ro-RO.min.js	55.2 KB	TIE	ERROR	Source
date-sa-IN.js	132.2 KB	TIE	ERROR	Source
date-se-FI.js	131.8 KB	TIE	ERROR	Source
date-se-NO.js	131.8 KB	TIE	ERROR	Source
date-se-NO.min.js	55.6 KB	TIE	ERROR	Source
date-se-SE.js	131.8 KB	TIE	ERROR	Source
date-se-SE.min.js	55.6 KB	TIE	ERROR	Source
date-sl-SI.js	131.6 KB	TIE	ERROR	Source
date-sma-NO.js	131.6 KB	TIE	ERROR	Source
date-sma-SE.js	131.6 KB	TIE	ERROR	Source
date-sma-SE.min.js	55.3 KB	TIE	ERROR	Source
date-sms-FI.min.js	56.0 KB	TIE	ERROR	Source
date-sq-AL.js	131.6 KB	TIE	ERROR	Source
date-sr-Cyrl-BA.js	131.9 KB	TIE	ERROR	Source
date-sr-Cyrl-BA.min.js	56.8 KB	TIE	ERROR	Source
date-sr-Cyrl-CS.js	131.9 KB	TIE	ERROR	Source
date-sr-Latn-BA.js	131.6 KB	TIE	ERROR	Source
date-sr-Latn-BA.min.js	55.2 KB	TIE	ERROR	Source
date-sv-FI.min.js	55.2 KB	TIE	ERROR	Source
date-syr-SY.js	131.9 KB	TIE	ERROR	Source
date-ta-IN.min.js	56.7 KB	TIE	ERROR	Source
date-te-IN.js	132.4 KB	TIE	ERROR	Source
date-th-TH.js	132.2 KB	TIE	ERROR	Source
date-th-TH.min.js	56.7 KB	TIE	ERROR	Source
date-tn-ZA.min.js	55.2 KB	TIE	ERROR	Source
date-tr-TR.min.js	55.3 KB	TIE	ERROR	Source
date-tt-RU.min.js	56.8 KB	TIE	ERROR	Source
date-uk-UA.js	131.9 KB	TIE	ERROR	Source
date-ur-PK.min.js	56.3 KB	TIE	ERROR	Source
date-uz-Latn-UZ.js	131.6 KB	TIE	ERROR	Source
date-uz-Latn-UZ.min.js	55.2 KB	TIE	ERROR	Source
date-vi-VN.js	131.8 KB	TIE	ERROR	Source
date-xh-ZA.min.js	55.2 KB	TIE	ERROR	Source
date-zh-CN.min.js	55.7 KB	TIE	ERROR	Source
date-zh-MO.js	131.6 KB	TIE	ERROR	Source
date-zh-SG.min.js	55.7 KB	TIE	ERROR	Source
date-zh-TW.min.js	55.8 KB	TIE	ERROR	Source
date-zu-ZA.min.js	55.2 KB	TIE	ERROR	Source
daterangepicker.js	68.1 KB	TIE	ERROR	Source
dropzone-amd-module.js	63.3 KB	TIE	ERROR	Source
echarts.common.js	1.1 MB	TIE	ERROR	Source
echarts.common.min.js	296.1 KB	TIE	ERROR	Source
fd-slider.js	69.9 KB	TIE	ERROR	Source
form_advanced.html	94.6 KB	TIE	ERROR	Source
fullcalendar.min.js	128.3 KB	TIE	ERROR	Source
general_elements.html	84.2 KB	TIE	ERROR	Source
graph.js	60.0 KB	TIE	ERROR	Source
html5_spec_section.html	95.8 KB	TIE	ERROR	Source
icons.html	129.3 KB	TIE	ERROR	Source
ie8.html	49.6 KB	TIE	ERROR	Source
index.html	49.9 KB	TIE	ERROR	Source
index.min.js	131.9 KB	TIE	ERROR	Source
jquery-1.9.1.min.js	90.5 KB	TIE	ERROR	Source
jquery-3.7.1.slim.min.js	68.6 KB	TIE	ERROR	Source
jquery.dataTables.min.js	80.7 KB	TIE	ERROR	Source
jquery.mCustomScrollbar.css	52.3 KB	TIE	ERROR	Source
jquery.mCustomScrollbar.js	89.0 KB	TIE	ERROR	Source
jquery.sparkline.js	120.9 KB	TIE	ERROR	Source
jquery.sparkline.min.js	61.2 KB	TIE	ERROR	Source
jquery.vmap.algeria.js	90.8 KB	TIE	ERROR	Source
jquery.vmap.germany.js	54.1 KB	TIE	ERROR	Source
jquery.vmap.iran.js	78.0 KB	TIE	ERROR	Source
jquery.vmap.turkey.js	181.5 KB	TIE	ERROR	Source
jquery.vmap.world.js	59.2 KB	TIE	ERROR	Source
jszip.js	294.8 KB	TIE	ERROR	Source
jszip.min.js	78.1 KB	TIE	ERROR	Source
lang-all.js	122.3 KB	TIE	ERROR	Source
moment-with-locales.min.js	202.1 KB	TIE	ERROR	Source
morris.js	64.5 KB	TIE	ERROR	Source
neimenggu.js	56.6 KB	TIE	ERROR	Source
node_net.js	70.2 KB	TIE	ERROR	Source
node_path.js	51.5 KB	TIE	ERROR	Source
obama_budget_proposal_2012.tree.js	130.0 KB	TIE	ERROR	Source
parsing_operators.js.html	51.0 KB	TIE	ERROR	Source
parsley.js	87.1 KB	TIE	ERROR	Source
potential_checkers.html	54.0 KB	TIE	ERROR	Source
prettify.js	61.8 KB	TIE	ERROR	Source
raphael.no-deps.js	297.0 KB	TIE	ERROR	Source
raphael.no-deps.min.js	88.0 KB	TIE	ERROR	Source
raphael.svg.js	55.9 KB	TIE	ERROR	Source
rfc2616.html	509.6 KB	TIE	ERROR	Source
run_prettify.js	77.8 KB	TIE	ERROR	Source
select2.full.js	158.0 KB	TIE	ERROR	Source
shandong.js	49.0 KB	TIE	ERROR	Source
sinon.js	129.6 KB	TIE	ERROR	Source
sizzle.js	59.9 KB	TIE	ERROR	Source
style.min.css	64.6 KB	TIE	ERROR	Source
sugarpak.js.html	51.9 KB	TIE	ERROR	Source
timeScale.html	86.7 KB	TIE	ERROR	Source
vfs_fonts.js	554.3 KB	TIE	ERROR	Source
xinjiang.js	84.0 KB	TIE	ERROR	Source

Frequently Asked Questions

How does PZIP beat Brotli on web files?

Brotli includes a built-in 120KB web dictionary. PZIP doesn't fight this — it helps Brotli by pre-separating the file into cleaner streams. Stream-separated Brotli beats raw Brotli because each stream has higher internal consistency.

PZIP vs Other Compressors for HTML / CSS / JS

Feature	PZIP	LZMA / xz	gzip	zstd
Type-Aware	Yes	No	No	No
Lossless	Yes	Yes	Yes	Yes
Never-Worse Guarantee	Yes	N/A	N/A	N/A
Best HTML / CSS / JS Saving	0%	Baseline	Worse	~Similar
Round-Trip Verified	Every file	Manual	Manual	Manual

Try PZIP on Your HTML / CSS / JS Files

Upload any HTML / CSS / JS file up to 30 MB. Free during beta — no signup required. See how much smaller PZIP makes it.

Compress HTML / CSS / JS Now All File Types

Baseline:     LZMA-9 (maximum compression)
Competitors:  gzip-9, bz2-9, brotli-11, zstd-19, PPMd 2-24
Verification: Byte-exact round-trip on every file
Guarantee:    Never-worse (PZIP <= LZMA, always)
Test files:   200 real-world HTML / CSS / JS files
Updated:      2026-02-15