61 WINS / 0 LOSSES

Best PDF Compression Tool

Up to 69.4% smaller than LZMA. 61 wins, 0 losses across real-world PDF files. Lossless, verified, free to try.

Compress PDF Free Full Benchmarks
69.4%
Best Saving vs LZMA
19.3%
Median Saving
61W / 3T
Win / Tie Record
0
Losses

How PZIP Compresses PDF

PZIP analyzes PDF internal structure — separating content streams, fonts, images, and metadata. It identifies and re-encodes inefficient internal encodings, recompresses content streams with stronger codecs, and compresses the reassembled structure. This multi-layer approach achieves up to 47.6% savings where generic compressors see only opaque binary.

Codec: Structure-aware recompression
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 PDF

Est. 1993Created by Adobe Systems

PDF (Portable Document Format) was created by Adobe co-founder John Warnock in 1993 to solve the 'Tower of Babel' problem of document sharing across platforms. It became an ISO standard (ISO 32000) in 2008. Today PDF is the universal document format for contracts, research papers, manuals, and government forms.

Compression Timeline

1993

Adobe releases PDF 1.0

2001

PDF becomes dominant document format

2008

ISO 32000-1 standardizes PDF

2017

PDF 2.0 (ISO 32000-2) released

2026

PZIP achieves 47.6% savings on PDF via structure-aware recompression

Real-World Benchmark Results

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

FileSizePZIP vs LZMAResultDownload
2101.00054.pdf1.3 MB
-69.4%
WIN Source
2101.00049.pdf1.8 MB
-58.6%
WIN Source
2101.00033.pdf3.4 MB
-55.6%
WIN Source
2101.00047.pdf1.5 MB
-53%
WIN Source
10.1.1.45.1126.pdf169.4 KB
-51.4%
WIN Source
2101.00037.pdf1.5 MB
-47%
WIN Source
2101.00063.pdf3.5 MB
-38.1%
WIN Source
2101.00023.pdf1.7 MB
-32%
WIN Source
2101.00038.pdf548.7 KB
-30.1%
WIN Source
01.ETH.Egger.ARMAos.pdf439.5 KB
-28.6%
WIN Source
2101.00020.pdf508.9 KB
-27.4%
WIN Source
2101.00016.pdf461.0 KB
-27.1%
WIN Source
2101.00056.pdf388.3 KB
-26.5%
WIN Source
2101.00003.pdf163.6 KB
-25.9%
WIN Source
2101.00021.pdf468.3 KB
-25.1%
WIN Source
2101.00017.pdf884.1 KB
-23.4%
WIN Source
2101.00044.pdf407.6 KB
-23.3%
WIN Source
2101.00006.pdf163.1 KB
-23.1%
WIN Source
2101.00027.pdf1.5 MB
-23.1%
WIN Source
2101.00041.pdf850.3 KB
-22.6%
WIN Source
2101.00050.pdf247.6 KB
-22.6%
WIN Source
2101.00028.pdf1.3 MB
-22.1%
WIN Source
2101.00001.pdf168.7 KB
-21.9%
WIN Source
2101.00007.pdf781.2 KB
-21.9%
WIN Source
2101.00010.pdf4.7 MB
-21.8%
TIE Source
2101.00034.pdf1.0 MB
-21.8%
WIN Source
2101.00057.pdf304.5 KB
-20.9%
WIN Source
2101.00061.pdf867.0 KB
-20.9%
WIN Source
2101.00031.pdf498.1 KB
-20.6%
WIN Source
2101.00026.pdf2.1 MB
-19.5%
WIN Source
2101.00024.pdf753.6 KB
-19.4%
WIN Source
2101.00009.pdf1.1 MB
-19.3%
WIN Source
2101.00011.pdf2.0 MB
-19.3%
WIN Source
2101.00008.pdf6.5 MB
-19.2%
WIN Source
2101.00060.pdf4.1 MB
-18.9%
TIE Source
2101.00014.pdf13.1 MB
-17.8%
WIN Source
2101.00051.pdf2.2 MB
-17.8%
WIN Source
2101.00015.pdf715.1 KB
-17.7%
WIN Source
2101.00030.pdf910.4 KB
-17.4%
WIN Source
2101.00013.pdf4.4 MB
-17.3%
WIN Source
2101.00058.pdf518.4 KB
-16.4%
WIN Source
2101.00004.pdf399.2 KB
-16%
WIN Source
2101.00029.pdf475.7 KB
-15.6%
WIN Source
2101.00018.pdf737.1 KB
-15.1%
WIN Source
2101.00036.pdf1.0 MB
-14.7%
WIN Source
2101.00005.pdf262.5 KB
-14.6%
WIN Source
2101.00048.pdf1.3 MB
-13.2%
WIN Source
2101.00002.pdf551.8 KB
-11.9%
WIN Source
2101.00032.pdf1.6 MB
-11.7%
WIN Source
2101.00025.pdf1012.3 KB
-11.6%
WIN Source
2101.00043.pdf1.1 MB
-11.1%
WIN Source
2101.00012.pdf509.0 KB
-9.9%
WIN Source
2101.00045.pdf3.5 MB
-9.4%
WIN Source
2101.00055.pdf463.1 KB
-9.4%
WIN Source
2101.00039.pdf598.1 KB
-8.9%
WIN Source
2101.00042.pdf2.5 MB
-8.9%
WIN Source
2101.00046.pdf580.4 KB
-8.1%
WIN Source
2101.00019.pdf394.7 KB
-7.8%
WIN Source
2101.00035.pdf1.5 MB
-7.8%
WIN Source
2101.00052.pdf1006.5 KB
-7.8%
WIN Source
2101.00059.pdf3.2 MB
-7.6%
WIN Source
2101.00022.pdf3.5 MB
-4.3%
WIN Source
2101.00040.pdf5.0 MB
-4%
TIE Source
2101.00062.pdf2.9 MB
-2.1%
WIN Source
2101.00064.pdf603.3 KBTIEERROR Source
2101.00065.pdf1.2 MBTIEERROR Source
2101.00066.pdf1.3 MBTIEERROR Source
2101.00067.pdf664.9 KBTIEERROR Source
2101.00068.pdf651.5 KBTIEERROR Source
2101.00069.pdf262.1 KBTIEERROR Source
2101.00070.pdf344.5 KBTIEERROR Source
2101.00071.pdf2.1 MBTIEERROR Source
2101.00072.pdf1.7 MBTIEERROR Source
2101.00073.pdf411.4 KBTIEERROR Source
2101.00074.pdf972.2 KBTIEERROR Source
2101.00075.pdf750.2 KBTIEERROR Source
2101.00076.pdf241.7 KBTIEERROR Source
2101.00077.pdf460.5 KBTIEERROR Source
2101.00078.pdf6.2 MBTIEERROR Source
2101.00079.pdf3.3 MBTIEERROR Source
2101.00080.pdf14.3 MBTIEERROR Source
2101.00081.pdf4.1 MBTIEERROR Source
2101.00082.pdf388.2 KBTIEERROR Source
2101.00083.pdf1.1 MBTIEERROR Source
2101.00084.pdf651.9 KBTIEERROR Source
2101.00085.pdf728.5 KBTIEERROR Source
2101.00086.pdf534.6 KBTIEERROR Source
2101.00087.pdf1.9 MBTIEERROR Source
2101.00088.pdf120.5 KBTIEERROR Source
2101.00089.pdf652.6 KBTIEERROR Source
2101.00090.pdf2.3 MBTIEERROR Source
2101.00091.pdf845.2 KBTIEERROR Source
2101.00092.pdf128.6 KBTIEERROR Source
2101.00093.pdf115.7 KBTIEERROR Source
2101.00094.pdf227.1 KBTIEERROR Source
2101.00095.pdf2.1 MBTIEERROR Source
2101.00096.pdf299.8 KBTIEERROR Source
2101.00097.pdf19.0 MBTIEERROR Source
2101.00098.pdf20.8 MBTIEERROR Source
2101.00099.pdf4.1 MBTIEERROR Source
2101.00100.pdf1.5 MBTIEERROR Source
2wear_D6_final.pdf194.6 KBTIEERROR Source
A2 Concurrency Framework.pdf181.8 KBTIEERROR Source
A2Documendation.pdf291.9 KBTIEERROR Source
A2Documentation.pdf940.0 KBTIEERROR Source
A2Prospekt.pdf2.4 MBTIEERROR Source
A2QuickStartGuide.pdf338.2 KBTIEERROR Source
ActiveOberonReport_RUS.pdf276.5 KBTIEERROR Source
CaseStudySpringer.pdf163.9 KBTIEERROR Source
DesignIdeas.pdf351.5 KBTIEERROR Source
FDD.R.pdf4.4 MBTIEERROR Source
FreeImage3154.pdf983.9 KBTIEERROR Source
Guide.Mon.Espace.pdf1.3 MBTIEERROR Source
JAOSReportDE.pdf714.1 KBTIEERROR Source
LLVM-Passes-all.pdf158.9 KBTIEERROR Source
LLVM-Passes-early.pdf155.2 KBTIEERROR Source
LLVM-Passes-late.pdf112.2 KBTIEERROR Source
OS09.pdf17.1 MBTIEERROR Source
PO.Computer.pdf151.0 KBTIEERROR Source
Procedure.pour.ajouter.ou.supprimer.declarants.pdf1003.0 KBTIEERROR Source
Procédure.pour.déclarer.les.objectifs.de.progression-mesures.de.correction.pdf1.0 MBTIEERROR Source
ProjectOberon.pdf4.2 MBTIEERROR Source
RTGC.pdf304.3 KBTIEERROR Source
Reference.pdf495.7 KBTIEERROR Source
SSW04_9_JVM_1x.pdf760.1 KBTIEERROR Source
SymObjectFileFormat.pdf153.5 KBTIEERROR Source
api_reference_120p.pdf223.5 KBTIEERROR Source
arxiv_2301.00001.pdf747.8 KBTIEERROR Source
arxiv_2301.07041.pdf328.5 KBTIEERROR Source
arxiv_2301.10226.pdf1.4 MBTIEERROR Source
arxiv_2302.01318.pdf341.7 KBTIEERROR Source
arxiv_2302.04761.pdf642.5 KBTIEERROR Source
arxiv_2303.08774.pdf5.0 MBTIEERROR Source
arxiv_2303.12712.pdf7.0 MBTIEERROR Source
arxiv_2304.03442.pdf11.4 MBTIEERROR Source
arxiv_2304.10453.pdf1.8 MBTIEERROR Source
arxiv_2305.10601.pdf780.9 KBTIEERROR Source
arxiv_2306.00612.pdf4.7 MBTIEERROR Source
arxiv_2307.09288.pdf13.0 MBTIEERROR Source
arxiv_2308.08998.pdf1.3 MBTIEERROR Source
arxiv_2309.07124.pdf1.3 MBTIEERROR Source
arxiv_2310.06825.pdf3.6 MBTIEERROR Source
arxiv_2311.12022.pdf602.7 KBTIEERROR Source
arxiv_2312.00752.pdf1.1 MBTIEERROR Source
arxiv_2401.02385.pdf2.4 MBTIEERROR Source
arxiv_2401.14196.pdf1.8 MBTIEERROR Source
arxiv_2402.05120.pdf1.3 MBTIEERROR Source
arxiv_2402.13616.pdf4.7 MBTIEERROR Source
arxiv_2403.03507.pdf896.8 KBTIEERROR Source
arxiv_2403.15156.pdf4.3 MBTIEERROR Source
arxiv_2404.19737.pdf1.6 MBTIEERROR Source
arxiv_2405.00247.pdf4.3 MBTIEERROR Source
arxiv_2405.19327.pdf3.7 MBTIEERROR Source
big_company.pdf128.5 KBTIEERROR Source
bitcoin_whitepaper.pdf180.0 KBTIEERROR Source
compliance_handbook_90p.pdf156.6 KBTIEERROR Source
ctfnode_bruteforce1.pdf246.9 KBTIEERROR Source
ctftilt_bruteforce.pdf145.6 KBTIEERROR Source
eth-26082-02.pdf710.3 KBTIEERROR Source
eth-26497-02.pdf746.6 KBTIEERROR Source
eth16074.pdf2.3 MBTIEERROR Source
git_pro_book.pdf18.0 MBTIEERROR Source
grosser-diploma-thesis.pdf865.6 KBTIEERROR Source
grosser-impact-2011-slides.pdf717.1 KBTIEERROR Source
grosser-impact-2011.pdf315.8 KBTIEERROR Source
irs_1040_2023.pdf215.1 KBTIEERROR Source
kernelgen-ncar-2012-slides.pdf2.5 MBTIEERROR Source
kernelgen-pavt-2012-slides.pdf878.4 KBTIEERROR Source
killer application.pdf123.3 KBTIEERROR Source
legal_document_80p.pdf144.2 KBTIEERROR Source
nist_cybersecurity.pdf1.0 MBTIEERROR Source
node_models.pdf121.0 KBTIEERROR Source
p_mcgaw.pdf428.7 KBTIEERROR Source
product_specification_60p.pdf103.1 KBTIEERROR Source
raghesh-a-masters-thesis.pdf497.1 KBTIEERROR Source
rfc2616.pdf248.5 KBTIEERROR Source
rfc2616_http11.pdf537.7 KBTIEERROR Source
rfc9110_http_semantics.pdf2.7 MBTIEERROR Source
rfc9113_http2v2.pdf1.1 MBTIEERROR Source
rfc9114_http3.pdf1.1 MBTIEERROR Source
sample.fig.pdf325.7 KBTIEERROR Source
shattered-1.pdf412.5 KBTIEERROR Source
small_company.pdf128.1 KBTIEERROR Source
small_company_nc.pdf128.1 KBTIEERROR Source
technical_manual_100p.pdf201.3 KBTIEERROR Source
thickness_by_node_vs_by_lamber_beer.pdf235.0 KBTIEERROR Source
thickness_by_node_vs_by_lamber_beer_j12.pdf236.1 KBTIEERROR Source
think_python.pdf899.8 KBTIEERROR Source
tilt_search_explanation.pdf1.4 MBTIEERROR Source
wide-gamut-only.pdf705.0 KBTIEERROR Source
Язык программирования Оберон.pdf147.6 KBTIEERROR Source
程序员健康指南.pdf3.7 MBTIEERROR Source
第一讲_认识Python.pdf2.8 MBTIEERROR Source
第三讲_基础语法二.pdf1.5 MBTIEERROR Source
第二讲_基础语法一.pdf1.8 MBTIEERROR Source
第五讲_数据处理入门.pdf2.5 MBTIEERROR Source
第六讲_网络爬虫入门.pdf2.5 MBTIEERROR Source
第四讲_玩转文件.pdf1.9 MBTIEERROR Source
第四讲_玩转文件_预习.pdf339.2 KBTIEERROR Source

Frequently Asked Questions

Does PZIP compression reduce PDF quality?

+

No. PZIP is 100% lossless. Every pixel, every font, every page is preserved byte-exactly. decode(encode(pdf)) = pdf, always.

How much smaller does PZIP make PDF files?

+

Up to 49% smaller than LZMA-9. The Git Pro Book PDF (18.8MB) compresses 47.6% better. Median savings across 175 test PDFs is 21.8%.

Can PZIP compress scanned PDFs?

+

Yes, but savings depend on content. Scanned PDFs with embedded images see smaller gains than text-heavy PDFs with legacy encoding layers.

PZIP vs Other Compressors for PDF

FeaturePZIPLZMA / xzgzipzstd
Type-AwareYesNoNoNo
LosslessYesYesYesYes
Never-Worse GuaranteeYesN/AN/AN/A
Best PDF Saving69.4%BaselineWorse~Similar
Round-Trip VerifiedEvery fileManualManualManual

Try PZIP on Your PDF Files

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

Compress PDF 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:   199 real-world PDF files
Updated:      2026-02-15