166 WINS / 0 LOSSES

Best PowerPoint (PPTX) Compression Tool

Up to 74.8% smaller than LZMA. 166 wins, 0 losses across real-world PowerPoint (PPTX) files. Lossless, verified, free to try.

Compress PowerPoint (PPTX) Free Full Benchmarks
74.8%
Best Saving vs LZMA
27.3%
Median Saving
166W / 0T
Win / Tie Record
0
Losses

How PZIP Compresses PowerPoint (PPTX)

PowerPoint files have extreme XML redundancy — every slide repeats theme definitions, layout schemas, and formatting blocks. PZIP restructures the container to exploit cross-slide redundancy that ZIP's per-file approach misses. This produces PZIP's highest Office format savings at 71.5%.

Codec: Container recompression + XML redundancy
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 PowerPoint (PPTX)

Est. 2007Created by Microsoft

PPTX is the Office Open XML presentation format. Presentations contain massive XML redundancy — slide layouts, themes, and formatting repeated across every slide — making them ideal targets for solid recompression.

Compression Timeline

1987

PowerPoint 1.0 released by Forethought

1990

Microsoft acquires PowerPoint

2007

PPTX format introduced in Office 2007

2026

PZIP achieves 71.5% savings — highest of any Office format

Real-World Benchmark Results

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

FileSizePZIP vs LZMAResultDownload
gh_munimounika2007_Emergency-room-patient-management-patients-come-with-different-urgency-levels._Emergency room patient management system.pptx31.7 KB
-74.8%
WIN Source
text_lorem_ipsum.pptx70.1 KB
-58.8%
WIN Source
text_legal_contract.pptx75.2 KB
-54%
WIN Source
text_gfx12_dasm_vopcx_dpp8.pptx67.5 KB
-40.4%
WIN Source
data_gold_prices_monthly.pptx50.3 KB
-38.7%
WIN Source
corporate_overview_50slides.pptx73.4 KB
-37.8%
WIN Source
text_gfx9_vop2_sdwa.pptx66.6 KB
-37.5%
WIN Source
text_gfx10_vopcx.pptx66.9 KB
-37.3%
WIN Source
text_gfx12_dasm_vopd.pptx66.6 KB
-36.6%
WIN Source
text_gfx8_vop2_dpp.pptx66.2 KB
-36.1%
WIN Source
text_gfx8_vop3cx.pptx66.2 KB
-35.8%
WIN Source
text_gfx12_dasm_vop3_from_vop2_dpp8.pptx67.5 KB
-35.7%
WIN Source
text_gfx10_vop2.pptx66.9 KB
-35.5%
WIN Source
data_Media_primary.pptx51.4 KB
-34.6%
WIN Source
text_gfx10_mimg.pptx68.1 KB
-34%
WIN Source
text_neon-instructions.pptx67.4 KB
-33.6%
WIN Source
data_natural_gas_prices.pptx51.4 KB
-32.8%
WIN Source
text_avx512fp16.pptx70.8 KB
-32.7%
WIN Source
data_Classifications.pptx51.3 KB
-32.4%
WIN Source
data_Medium.pptx50.7 KB
-31.9%
WIN Source
data_daily-temperatures.pptx51.5 KB
-31.5%
WIN Source
data_lemurs.pptx54.1 KB
-31.4%
WIN Source
data_mushrooms.pptx53.7 KB
-31.4%
WIN Source
text_bible_kjv.pptx73.9 KB
-31%
WIN Source
data_covid_us_states.pptx53.4 KB
-30.5%
WIN Source
text_README_P9.pptx64.0 KB
-30.5%
WIN Source
text_anthem.pptx73.9 KB
-30.5%
WIN Source
data_global_temp_monthly.pptx52.3 KB
-30.4%
WIN Source
data_inflation_us.pptx52.3 KB
-29.9%
WIN Source
investor_deck.pptx42.3 KB
-29.9%
WIN Source
text_alice_in_wonderland.pptx75.0 KB
-29.8%
WIN Source
text_great_gatsby_precursor.pptx75.6 KB
-29.8%
WIN Source
text_count_of_monte_cristo.pptx76.0 KB
-29.6%
WIN Source
text_emma.pptx76.2 KB
-29.5%
WIN Source
text_christmas_carol.pptx76.3 KB
-29.4%
WIN Source
text_communist_manifesto.pptx76.5 KB
-29.4%
WIN Source
text_divine_comedy.pptx76.1 KB
-29.4%
WIN Source
text_moby_dick.pptx76.5 KB
-29.4%
WIN Source
text_jane_eyre.pptx76.8 KB
-29.3%
WIN Source
text_jungle_book.pptx76.8 KB
-29.3%
WIN Source
text_les_miserables.pptx76.7 KB
-29.3%
WIN Source
text_little_women.pptx76.9 KB
-29.3%
WIN Source
text_great_expectations.pptx77.1 KB
-29.2%
WIN Source
text_anna_karenina.pptx77.1 KB
-29.1%
WIN Source
text_grimms_fairy_tales.pptx77.3 KB
-29.1%
WIN Source
text_importance_of_being_earnest.pptx77.0 KB
-29.1%
WIN Source
text_modest_proposal.pptx77.0 KB
-29.1%
WIN Source
text_call_of_the_wild.pptx77.7 KB
-29%
WIN Source
uzis_dispecink_20210319.pptx185.2 KB
-29%
WIN Source
data_families.pptx53.5 KB
-28.9%
WIN Source
text_don_quixote.pptx77.8 KB
-28.9%
WIN Source
data_fivethirtyeight_steak_survey.pptx56.5 KB
-28.8%
WIN Source
data_hw_25000.pptx55.1 KB
-28.8%
WIN Source
text_dorian_gray.pptx77.7 KB
-28.8%
WIN Source
data_fips_codes.pptx52.7 KB
-28.7%
WIN Source
data_fivethirtyeight_nba.pptx55.1 KB
-28.7%
WIN Source
text_crime_and_punishment.pptx78.3 KB
-28.6%
WIN Source
text_democracy_in_america_v2.pptx78.8 KB
-28.6%
WIN Source
text_odyssey_homer.pptx78.5 KB
-28.6%
WIN Source
data_ecb_exchange_rates.pptx53.3 KB
-28.5%
WIN Source
data_exchange_rates.pptx53.3 KB
-28.5%
WIN Source
text_frankenstein.pptx78.9 KB
-28.5%
WIN Source
data_breast_cancer.pptx55.5 KB
-28.4%
WIN Source
text_critique_pure_reason.pptx78.9 KB
-28.4%
WIN Source
text_my_antonia.pptx78.6 KB
-28.4%
WIN Source
data_covid_us_counties.pptx55.1 KB
-28.2%
WIN Source
text_dracula.pptx79.7 KB
-28.2%
WIN Source
text_huckleberry_finn.pptx79.6 KB
-28.2%
WIN Source
text_oliver_twist.pptx79.3 KB
-28.2%
WIN Source
dangerzone_math.pptx34.4 KB
-28.1%
WIN Source
text_jekyll_and_hyde.pptx79.9 KB
-28.1%
WIN Source
text_odyssey_butler.pptx79.7 KB
-28.1%
WIN Source
text_democracy_in_america_v1.pptx80.6 KB
-27.9%
WIN Source
data_co2_emissions.pptx56.0 KB
-27.8%
WIN Source
data_earthquake_data.pptx55.4 KB
-27.8%
WIN Source
data_covid19_timeseries_combined.pptx55.3 KB
-27.7%
WIN Source
data_bob_ross_538.pptx57.3 KB
-27.6%
WIN Source
data_covid19_countries_aggregated.pptx54.7 KB
-27.6%
WIN Source
text_leviathan_hobbes.pptx81.0 KB
-27.6%
WIN Source
data_Attributes.pptx55.1 KB
-27.5%
WIN Source
dangerzone_n90190.pptx32.5 KB
-27.4%
WIN Source
dangerzone_trigger.pptx31.5 KB
-27.4%
WIN Source
data_gps_track_10k.pptx58.6 KB
-27.4%
WIN Source
data_gdp.pptx55.8 KB
-27.2%
WIN Source
text_confessions_augustine.pptx82.9 KB
-27.2%
WIN Source
data_diamonds.pptx56.9 KB
-27.1%
WIN Source
text_heart_of_darkness.pptx82.7 KB
-27.1%
WIN Source
data_carseats.pptx57.9 KB
-27%
WIN Source
text_origin_of_species.pptx83.0 KB
-27%
WIN Source
data_Constituents.pptx56.2 KB
-26.9%
WIN Source
data_cars.pptx57.3 KB
-26.9%
WIN Source
data_energy_data.pptx56.3 KB
-26.9%
WIN Source
data_nasdaq_listing.pptx55.4 KB
-26.9%
WIN Source
text_meditations_aurelius.pptx83.5 KB
-26.9%
WIN Source
data_Objects DO NOT OPEN WITH EXCEL.pptx57.2 KB
-26.8%
WIN Source
data_childcare_costs.pptx58.3 KB
-26.8%
WIN Source
data_Geography.pptx56.3 KB
-26.7%
WIN Source
data_jhu_covid_deaths_us.pptx56.5 KB
-26.7%
WIN Source
text_metamorphosis.pptx84.6 KB
-26.7%
WIN Source
text_brothers_karamazov.pptx84.6 KB
-26.5%
WIN Source
text_notes_from_underground.pptx84.9 KB
-26.5%
WIN Source
data_Titles.pptx56.0 KB
-26.4%
WIN Source
data_life_expectancy.pptx58.4 KB
-26.4%
WIN Source
data_Dimensions_clean.pptx57.4 KB
-26.3%
WIN Source
data_mlb_players.pptx58.4 KB
-26.3%
WIN Source
text_adventures_huck_finn_alt.pptx85.3 KB
-26.3%
WIN Source
text_idiot_dostoevsky.pptx85.4 KB
-26.3%
WIN Source
uzis_dispecink_20210312.pptx160.1 KB
-26.2%
WIN Source
data_california_housing.pptx60.2 KB
-26.1%
WIN Source
uzis_dispecink_20210305.pptx158.8 KB
-26.1%
WIN Source
data_finance_google.pptx63.7 KB
-26%
WIN Source
data_nba_players.pptx58.8 KB
-25.7%
WIN Source
data_jhu_covid_deaths_global.pptx58.4 KB
-25.6%
WIN Source
data_jhu_covid_confirmed.pptx58.6 KB
-25.4%
WIN Source
uzis_dispecink_20210402.pptx166.4 KB
-25.4%
WIN Source
data_adult_income.pptx59.8 KB
-25.3%
WIN Source
data_fivethirtyeight_congress.pptx60.5 KB
-25.3%
WIN Source
text_gullivers_travels.pptx89.4 KB
-25.1%
WIN Source
data_astronauts.pptx60.0 KB
-24.9%
WIN Source
data_animal_crossing.pptx60.4 KB
-24.8%
WIN Source
data_country_codes.pptx54.6 KB
-24.8%
WIN Source
data_census_income.pptx60.5 KB
-24.7%
WIN Source
data_kaggle_titanic.pptx60.5 KB
-24.7%
WIN Source
data_airport_codes.pptx61.2 KB
-24.5%
WIN Source
data_iso3166_countries.pptx55.8 KB
-24.5%
WIN Source
data_comic_characters.pptx61.5 KB
-24.4%
WIN Source
data_beer_reviews.pptx61.1 KB
-24.3%
WIN Source
data_bechdel.pptx61.7 KB
-24.2%
WIN Source
data_fivethirtyeight_marvel_wikia.pptx61.7 KB
-24.2%
WIN Source
data_fivethirtyeight_police_killings.pptx61.8 KB
-24.2%
WIN Source
dangerzone_n778859.pptx31.7 KB
-24%
WIN Source
data_fivethirtyeight_avengers.pptx48.7 KB
-23.8%
WIN Source
data_big_mac_index.pptx63.9 KB
-23.7%
WIN Source
data_board_games.pptx63.3 KB
-23.6%
WIN Source
data_languages.pptx63.3 KB
-23.5%
WIN Source
data_bob_ross.pptx65.3 KB
-23.4%
WIN Source
data_movies.pptx64.0 KB
-23.4%
WIN Source
data_airports.pptx65.1 KB
-23.3%
WIN Source
mos_landscaping.pptx158.4 KB
-23.2%
WIN Source
data_Cxx2cIssues.pptx61.9 KB
-23.1%
WIN Source
data_imdb_top250.pptx64.2 KB
-23.1%
WIN Source
data_consumer_complaints_26k.pptx65.5 KB
-23%
WIN Source
data_Cxx17Issues.pptx65.2 KB
-22.9%
WIN Source
data_Cxx2cPapers.pptx50.9 KB
-22.7%
WIN Source
data_coffee_ratings.pptx65.2 KB
-22.7%
WIN Source
data_drugs_fda.pptx66.5 KB
-22.7%
WIN Source
data_Cxx20Issues.pptx66.2 KB
-22.6%
WIN Source
data_Cxx23Issues.pptx66.4 KB
-22.5%
WIN Source
data_fivethirtyeight_recent_grads.pptx51.7 KB
-22.3%
WIN Source
default.pptx80.2 KB
-22.1%
WIN Source
text_all_requirements.pptx29.4 KB
-21.6%
WIN Source
dangerzone_tdf104788.pptx80.9 KB
-21.1%
WIN Source
data_brain_networks.pptx76.6 KB
-21%
WIN Source
crane.pptx76.6 KB
-20.7%
WIN Source
dove.pptx72.5 KB
-20.6%
WIN Source
beaver.pptx75.4 KB
-20.4%
WIN Source
dolphin.pptx74.1 KB
-20.1%
WIN Source
kata_containers_storage.pptx9.7 MB
-16.9%
WIN Source
tudelft_psd_examples.pptx135.6 KB
-16.7%
WIN Source
sentiment_bert_tfidf.pptx459.0 KB
-15.2%
WIN Source
sas_sgf2018.pptx2.8 MB
-9.9%
WIN Source
fb-tao.pptx230.4 KB
-7.4%
WIN Source
jenkins_master_slave.pptx2.3 MB
-5.7%
WIN Source
ucare_master19.pptx9.0 MB
-2%
WIN Source
gh_sujithaseenivasan_EcoSure_EcoSure.pptx2.5 MB
-1.5%
WIN Source
barcelona_symposium_slides.pptx14.5 MB
-0.1%
WIN Source

Frequently Asked Questions

Why is PPTX compression so effective?

+

Presentations repeat slide layouts, themes, and formatting XML across every slide. Container recompression eliminates this redundancy far more effectively than ZIP's per-file deflate.

PZIP vs Other Compressors for PowerPoint (PPTX)

FeaturePZIPLZMA / xzgzipzstd
Type-AwareYesNoNoNo
LosslessYesYesYesYes
Never-Worse GuaranteeYesN/AN/AN/A
Best PowerPoint (PPTX) Saving74.8%BaselineWorse~Similar
Round-Trip VerifiedEvery fileManualManualManual

Try PZIP on Your PowerPoint (PPTX) Files

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

Compress PowerPoint (PPTX) 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:   166 real-world PowerPoint (PPTX) files
Updated:      2026-02-15