Performance

Conversion speed of the examples, by format and by document.

Times measured on a laptop (AMD Ryzen 9 5900HS, Windows 10, Node.js 24.15) with the officepress version given on each example's page.

Formatdocumentspagesavg. per documentms per pagepages / second
.doc51011,095 ms54 ms18.4
.docx6104918 ms53 ms18.9
.odg617417 ms147 ms6.8
.odp5871,091 ms63 ms15.9
.ods5731,191 ms82 ms12.3
.odt6951,043 ms66 ms15.2
.ppt698662 ms41 ms24.7
.pptx698356 ms22 ms45.9
.pub868201 ms24 ms42.3
.rtf61051,614 ms92 ms10.8
.vsd612140 ms70 ms14.3
.vsdx510243 ms122 ms8.2
.xls569404 ms29 ms34.2
.xlsx573458 ms31 ms31.9
Total80101054 ms18.4

Per document

DocumentFormatpagesInput size (bytes)Output size (bytes)conversion
Service agreement (.rtf).rtf13.1 KB2.0 KB8 ms
Swimlane diagram (.odg).odg132.7 KB5.1 KB29 ms
Change control form (.docx).docx120.9 KB57.0 KB50 ms
Trifold leaflet (.pub).pub2714.0 KB635.8 KB50 ms
Product datasheet (.pub).pub2726.5 KB469.2 KB64 ms
Single-line diagram (.odg).odg383.0 KB168.9 KB66 ms
Installation qualification report (.odt).odt423.8 KB75.6 KB67 ms
Conference poster, A1 (.pub).pub1888.5 KB623.6 KB68 ms
Process diagram (P&ID), 2 sheets (.vsd).vsd2306.0 KB20.7 KB71 ms
Event poster (.pub).pub1272.0 KB267.3 KB83 ms
Evacuation plans, 4 A3 sheets (.odg).odg4100.4 KB115.9 KB97 ms
Programme review presentation (.pptx).pptx678.4 KB99.4 KB102 ms
Floor plan, 1:50 (.vsd).vsd1471.0 KB37.5 KB108 ms
3-D isometric view (.vsd).vsd1294.0 KB41.0 KB112 ms
Air handling diagram (.vsdx).vsdx1112.6 KB27.7 KB115 ms
3-D isometric view (.vsdx).vsdx1129.2 KB43.8 KB133 ms
Piping isometric (.vsd).vsd1328.5 KB48.0 KB140 ms
Piping isometric (.vsdx).vsdx1108.8 KB49.3 KB170 ms
Newsletter, 8 pages (.pub).pub8484.5 KB295.7 KB183 ms
Process diagram (P&ID), 3 sheets (.vsd).vsd3797.0 KB73.7 KB184 ms
Five-year financial plan (.xls).xls17416.0 KB398.4 KB225 ms
Process diagram (P&ID), 4 sheets (.vsd).vsd4909.5 KB78.9 KB227 ms
Annual review presentation (.pptx).pptx19605.7 KB760.9 KB242 ms
Investor presentation (.pptx).pptx211.1 MB1.1 MB246 ms
Five-year financial plan (.xlsx).xlsx18267.5 KB456.1 KB249 ms
Magazine, 16 pages (.pub).pub16837.5 KB788.6 KB285 ms
Production schedule and OEE (.xls).xls12442.5 KB414.5 KB298 ms
Design review presentation (.pptx).pptx19661.2 KB641.5 KB310 ms
Maintenance manual (.docx).docx22321.8 KB258.4 KB310 ms
Programme review presentation (.ppt).ppt6280.0 KB185.8 KB318 ms
Production schedule and OEE (.xlsx).xlsx12221.8 KB474.1 KB363 ms
Process diagram (P&ID), 3 sheets (.vsdx).vsdx3292.3 KB76.8 KB366 ms
Stability study workbook (.xls).xls16603.0 KB361.0 KB380 ms
Company brochure, 12 pages (.pub).pub122.5 MB2.7 MB400 ms
Process diagram (P&ID), 4 sheets (.vsdx).vsdx4347.9 KB82.4 KB432 ms
Stability study workbook (.xlsx).xlsx19235.6 KB457.8 KB467 ms
Magazine, 26 pages (.pub).pub267.3 MB12.0 MB475 ms
Dashboard with 3-D charts (.xlsx).xlsx91.2 MB1.0 MB498 ms
Poster and infographics (.odg).odg3224.3 KB760.9 KB506 ms
Training presentation (.pptx).pptx20970.5 KB1.4 MB513 ms
Annual report (.docx).docx27774.0 KB842.5 KB521 ms
Operations data workbook (.xls).xls15482.0 KB512.9 KB542 ms
Assembly drawings (.odg).odg367.1 KB1.5 MB571 ms
Dashboard with 3-D charts (.xls).xls91.2 MB1.3 MB574 ms
Design review presentation (.ppt).ppt193.0 MB1.6 MB616 ms
Workbook with 3-D charts (.ods).ods8933.5 KB1.4 MB685 ms
Investor presentation (.ppt).ppt214.1 MB2.1 MB698 ms
Operations data workbook (.xlsx).xlsx15221.7 KB629.4 KB714 ms
Presentation with 3-D effects (.pptx).pptx133.3 MB1.9 MB723 ms
Quarterly board report (.odp).odp20379.0 KB792.5 KB738 ms
Maintenance manual (.doc).doc221.5 MB765.6 KB744 ms
Technical report, saved by LibreOffice (.rtf).rtf123.7 MB1.7 MB744 ms
Training presentation (.ppt).ppt204.0 MB2.4 MB750 ms
Product launch presentation (.odp).odp17394.5 KB1.5 MB762 ms
User manual in four languages (.odt).odt19393.4 KB478.5 KB768 ms
Annual review presentation (.ppt).ppt193.4 MB1.8 MB775 ms
Clinical study protocol (.doc).doc261.0 MB1,003.8 KB796 ms
Report with 3-D figures (.doc).doc103.9 MB2.5 MB810 ms
Presentation with 3-D effects (.ppt).ppt134.2 MB2.7 MB812 ms
Annual report (.doc).doc261.7 MB1.4 MB827 ms
Report with 3-D figures (.docx).docx102.5 MB1.4 MB848 ms
Tender specification (.odt).odt18395.4 KB527.6 KB911 ms
Inspection report (.odt).odt201.3 MB1.5 MB959 ms
Public consultation presentation (.odp).odp20339.6 KB819.7 KB962 ms
Cost control workbook, earned value (.ods).ods15176.4 KB414.8 KB965 ms
Clinical study protocol (.docx).docx26340.1 KB888.4 KB982 ms
Conference talk (.odp).odp201.1 MB1.8 MB995 ms
Thesis chapter (.odt).odt19888.3 KB891.1 KB1,231 ms
Technical drawing with 3-D view (.odg).odg3456.4 KB3.1 MB1,235 ms
Environmental monitoring workbook (.ods).ods17191.4 KB692.2 KB1,283 ms
Energy audit workbook (.ods).ods13179.8 KB605.6 KB1,304 ms
Clinical study protocol (.rtf).rtf2727.2 MB1.1 MB1,586 ms
Hydrological data book (.ods).ods20229.8 KB622.1 KB1,719 ms
Presentation with 3-D scenes (.odp).odp10858.4 KB4.7 MB2,000 ms
Maintenance manual (.rtf).rtf2277.7 MB804.4 KB2,014 ms
Annual report (.rtf).rtf27111.7 MB1.2 MB2,102 ms
Scientific journal issue (.doc).doc171.7 MB1.7 MB2,299 ms
Technical report (.odt).odt151.1 MB1.9 MB2,321 ms
Scientific journal issue (.docx).docx181.3 MB1.8 MB2,797 ms
Scientific journal issue (.rtf).rtf1651.0 MB1.8 MB3,228 ms

Single-threaded, synchronous conversions; the library is CPU-bound and scales linearly with worker processes. Your numbers depend on your CPU and document complexity.