0 WINS / 0 LOSSES

Best Plain Text Compression Tool

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

Compress Plain Text Free Full Benchmarks
0%
Best Saving vs LZMA
0%
Median Saving
0W / 0T
Win / Tie Record
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Losses

How PZIP Compresses Plain Text

PZIP uses a high-order character-level prediction model that learns the statistical patterns of natural language as it reads. Per-character probability estimation outperforms LZMA's sliding window on prose, achieving up to 27.6% smaller output on Project Gutenberg texts.

Codec: Predictive modeling
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 Plain Text

Est. 1963Created by ASCII Standard

Plain text is the oldest digital data format, dating to ASCII (1963) and predating it in telegraph codes. Despite decades of compression research, new techniques continue to find savings. Predictive models have been the gold standard for text compression since the 1980s.

Compression Timeline

1963

ASCII standard published

1977

Lempel-Ziv (LZ77) algorithm — basis of gzip

1984

PPM (Prediction by Partial Matching) algorithm

1993

bzip2 released (BWT-based)

1998

LZMA algorithm by Igor Pavlov

2026

PZIP's predictive model beats LZMA by up to 27.6% on natural text

Real-World Benchmark Results

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

FileSizePZIP vs LZMAResultDownload
.renames.txt65.5 KBTIEERROR Source
README_P9.txt21.9 KBTIEERROR Source
adventures_huck_finn_alt.txt1.1 MBTIEERROR Source
alice_in_wonderland.txt170.3 KBTIEERROR Source
all_requirements.txt42.1 KBTIEERROR Source
anna_karenina.txt2.0 MBTIEERROR Source
anthem.txt127.6 KBTIEERROR Source
avx512fp16.txt91.6 KBTIEERROR Source
bible_kjv.txt4.4 MBTIEERROR Source
brothers_karamazov.txt1.9 MBTIEERROR Source
call_of_the_wild.txt195.1 KBTIEERROR Source
christmas_carol.txt178.0 KBTIEERROR Source
communist_manifesto.txt2.7 MBTIEERROR Source
confessions_augustine.txt617.4 KBTIEERROR Source
count_of_monte_cristo.txt2.7 MBTIEERROR Source
crime_and_punishment.txt1.1 MBTIEERROR Source
critique_pure_reason.txt104.3 KBTIEERROR Source
democracy_in_america_v1.txt1.1 MBTIEERROR Source
democracy_in_america_v2.txt846.0 KBTIEERROR Source
divine_comedy.txt143.9 KBTIEERROR Source
don_quixote.txt2.3 MBTIEERROR Source
dorian_gray.txt454.9 KBTIEERROR Source
dracula.txt869.5 KBTIEERROR Source
emma.txt911.9 KBTIEERROR Source
frankenstein.txt438.4 KBTIEERROR Source
gfx10_mimg.txt52.8 KBTIEERROR Source
gfx10_vop2.txt85.2 KBTIEERROR Source
gfx10_vopcx.txt156.0 KBTIEERROR Source
gfx12_dasm_vop3_from_vop2_dpp8.txt33.7 KBTIEERROR Source
gfx12_dasm_vopcx_dpp8.txt45.4 KBTIEERROR Source
gfx12_dasm_vopd.txt686.2 KBTIEERROR Source
gfx8_vop2_dpp.txt222.8 KBTIEERROR Source
gfx8_vop3cx.txt628.4 KBTIEERROR Source
gfx9_vop2_sdwa.txt373.1 KBTIEERROR Source
great_expectations.txt1.0 MBTIEERROR Source
great_gatsby_precursor.txt631.2 KBTIEERROR Source
grimms_fairy_tales.txt547.1 KBTIEERROR Source
gullivers_travels.txt399.4 KBTIEERROR Source
heart_of_darkness.txt231.6 KBTIEERROR Source
huckleberry_finn.txt607.9 KBTIEERROR Source
idiot_dostoevsky.txt1.2 MBTIEERROR Source
importance_of_being_earnest.txt138.6 KBTIEERROR Source
jane_eyre.txt1.0 MBTIEERROR Source
jekyll_and_hyde.txt159.7 KBTIEERROR Source
jungle_book.txt296.6 KBTIEERROR Source
legal_contract.txt71.5 KBTIEERROR Source
les_miserables.txt165.2 KBTIEERROR Source
leviathan_hobbes.txt3.0 MBTIEERROR Source
little_women.txt1.0 MBTIEERROR Source
lorem_ipsum.txt87.3 KBTIEERROR Source
meditations_aurelius.txt415.4 KBTIEERROR Source
metamorphosis.txt138.7 KBTIEERROR Source
moby_dick.txt1.2 MBTIEERROR Source
modest_proposal.txt38.8 KBTIEERROR Source
my_antonia.txt1.2 MBTIEERROR Source
neon-instructions.txt85.8 KBTIEERROR Source
notes_from_underground.txt260.8 KBTIEERROR Source
odyssey_butler.txt728.9 KBTIEERROR Source
odyssey_homer.txt701.0 KBTIEERROR Source
oliver_twist.txt933.5 KBTIEERROR Source
origin_of_species.txt1.0 MBTIEERROR Source
paradise_lost.txt971.2 KBTIEERROR Source
peter_pan.txt282.0 KBTIEERROR Source
portrait_of_the_artist.txt484.7 KBTIEERROR Source
pride_and_prejudice.txt754.3 KBTIEERROR Source
psychology_william_james.txt210.1 KBTIEERROR Source
rfc1035.txt119.7 KBTIEERROR Source
rfc1951.txt36.1 KBTIEERROR Source
rfc2045.txt71.2 KBTIEERROR Source
rfc2046.txt103.4 KBTIEERROR Source
rfc2047.txt32.5 KBTIEERROR Source
rfc2048.txt44.0 KBTIEERROR Source
rfc2049.txt50.0 KBTIEERROR Source
rfc2068.txt369.3 KBTIEERROR Source
rfc2131.txt111.1 KBTIEERROR Source
rfc2396.txt82.5 KBTIEERROR Source
rfc2616.txt412.4 KBTIEERROR Source
rfc2822.txt108.1 KBTIEERROR Source
rfc3023.txt84.0 KBTIEERROR Source
rfc3261.txt632.8 KBTIEERROR Source
rfc3501.txt222.3 KBTIEERROR Source
rfc3550.txt253.9 KBTIEERROR Source
rfc3629.txt33.1 KBTIEERROR Source
rfc3748.txt154.3 KBTIEERROR Source
rfc3986.txt138.5 KBTIEERROR Source
rfc4251.txt70.1 KBTIEERROR Source
rfc4252.txt33.5 KBTIEERROR Source
rfc4253.txt66.7 KBTIEERROR Source
rfc4254.txt49.2 KBTIEERROR Source
rfc4271.txt217.5 KBTIEERROR Source
rfc4566.txt106.3 KBTIEERROR Source
rfc4648.txt34.7 KBTIEERROR Source
rfc4880.txt198.9 KBTIEERROR Source
rfc4918.txt269.9 KBTIEERROR Source
rfc5246.txt217.2 KBTIEERROR Source
rfc5280.txt344.3 KBTIEERROR Source
rfc5321.txt220.6 KBTIEERROR Source
rfc5322.txt119.5 KBTIEERROR Source
rfc5545.txt337.4 KBTIEERROR Source
rfc5789.txt21.2 KBTIEERROR Source
rfc5849.txt78.9 KBTIEERROR Source
rfc6125.txt133.3 KBTIEERROR Source
rfc6202.txt43.7 KBTIEERROR Source
rfc6241.txt204.6 KBTIEERROR Source
rfc6455.txt158.3 KBTIEERROR Source
rfc6570.txt77.9 KBTIEERROR Source
rfc6749.txt159.7 KBTIEERROR Source
rfc6838.txt71.2 KBTIEERROR Source
rfc7049.txt130.9 KBTIEERROR Source
rfc7159.txt26.8 KBTIEERROR Source
rfc7230.txt201.1 KBTIEERROR Source
rfc7231.txt229.5 KBTIEERROR Source
rfc7232.txt55.4 KBTIEERROR Source
rfc7233.txt45.8 KBTIEERROR Source
rfc7234.txt88.5 KBTIEERROR Source
rfc7235.txt37.2 KBTIEERROR Source
rfc7489.txt158.9 KBTIEERROR Source
rfc7519.txt61.6 KBTIEERROR Source
rfc7540.txt204.7 KBTIEERROR Source
rfc7578.txt29.5 KBTIEERROR Source
rfc791.txt92.7 KBTIEERROR Source
rfc793.txt168.7 KBTIEERROR Source
rfc7950.txt383.9 KBTIEERROR Source
rfc8032.txt100.8 KBTIEERROR Source
rfc8259.txt27.7 KBTIEERROR Source
rfc8439.txt86.8 KBTIEERROR Source
rfc8446.txt329.8 KBTIEERROR Source
rfc8555.txt192.3 KBTIEERROR Source
rfc8615.txt26.2 KBTIEERROR Source
rfc9000.txt394.0 KBTIEERROR Source
rfc9110.txt491.2 KBTIEERROR Source
rfc9113.txt187.3 KBTIEERROR Source
rfc9114.txt151.6 KBTIEERROR Source
robinson_crusoe.txt638.7 KBTIEERROR Source
scarlet_letter.txt514.0 KBTIEERROR Source
sense_and_sensibility.txt696.2 KBTIEERROR Source
shakespeare_complete.txt5.4 MBTIEERROR Source
sherlock_holmes.txt593.4 KBTIEERROR Source
siddhartha.txt331.1 KBTIEERROR Source
sincosf.txt415.5 KBTIEERROR Source
souls_of_black_folk.txt418.7 KBTIEERROR Source
study_in_scarlet.txt262.5 KBTIEERROR Source
tale_of_two_cities.txt788.3 KBTIEERROR Source
the_aeneid.txt641.4 KBTIEERROR Source
the_iliad.txt1.1 MBTIEERROR Source
the_prince.txt300.8 KBTIEERROR Source
the_republic.txt1.2 MBTIEERROR Source
thus_spake_zarathustra.txt667.0 KBTIEERROR Source
time_machine.txt199.6 KBTIEERROR Source
tom_sawyer.txt424.2 KBTIEERROR Source
treasure_island.txt390.5 KBTIEERROR Source
turn_of_the_screw.txt253.2 KBTIEERROR Source
ulysses.txt1.5 MBTIEERROR Source
uncle_toms_cabin.txt1.0 MBTIEERROR Source
walden.txt213.4 KBTIEERROR Source
war_and_peace.txt3.2 MBTIEERROR Source
war_of_the_worlds.txt358.1 KBTIEERROR Source
white_fang.txt418.9 KBTIEERROR Source
wizard_of_oz.txt231.7 KBTIEERROR Source
wuthering_heights.txt677.6 KBTIEERROR Source
yellow_wallpaper.txt51.4 KBTIEERROR Source

Frequently Asked Questions

Why does PZIP beat LZMA on text?

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LZMA uses a sliding window to find repeated byte sequences. PZIP builds a character-level probability model — essentially learning the language as it compresses. For natural language prose, this statistical approach is more powerful.

What text files work best with PZIP?

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Longer prose works see the best savings (14-28%). Short texts (<10KB) may not benefit as the model needs data to learn from.

PZIP vs Other Compressors for Plain Text

FeaturePZIPLZMA / xzgzipzstd
Type-AwareYesNoNoNo
LosslessYesYesYesYes
Never-Worse GuaranteeYesN/AN/AN/A
Best Plain Text Saving0%BaselineWorse~Similar
Round-Trip VerifiedEvery fileManualManualManual

Try PZIP on Your Plain Text Files

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

Compress Plain Text 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:   161 real-world Plain Text files
Updated:      2026-02-15