Public Benchmark Snapshot

Benchmark results for the current public CLI snapshot.

This page summarizes the maintained public benchmark snapshot for GetWebP CLI. It is directional, reproducible, and tied to the current filewise publication baseline.

These results are a directional public snapshot, not a universal leaderboard. Read leaders together with coverage, margins, and methodology notes.

13 datasets80 files5 runspublic snapshotfilewise baseline

Test date

2026-04-23

Result rows

234

Source URLs

80/80

Healthy files

80/80

Current Leaders

Per-format overview

Leaders below are current leaders inside this snapshot. They are not universal winners, and they should be read together with margins and coverage.

Rankings are built from mean aggregates only. They disclose coverage and leader margins, but do not provide confidence intervals or significance tests.

AVIF

7 tools compared

Fastest

avifenc

filewise

margin 27.9%clear7/7 successful2 unsupported

Smallest

squoosh-cli

filewise

margin 11.3%clear7/7 successful2 unsupported

Highest quality

sharp-cli

filewise

margin 0.3%tight7/7 successful2 unsupported

Lowest memory

avifenc

filewise

margin 39.8%clear7/7 successful2 unsupported

Stability Notes

elapsed time

clear

leader avifenc, CV 47.9%, margin 27.9%

size ratio

clear

leader squoosh-cli, CV 54.2%, margin 11.3%

SSIM mean

tight

leader sharp-cli, CV 1.4%, margin 0.3%

peak RSS

clear

leader avifenc, CV 89.4%, margin 39.8%

WebP

8 tools compared

Fastest

cwebp

filewise

margin 13.2%clear7/8 successful2 unsupported

Smallest

getwebp

filewise

margin 0.2%tight7/8 successful2 unsupported

Highest quality

getwebp

filewise

margin 0.0%tight7/8 successful2 unsupported

Lowest memory

cwebp

filewise

margin 28.0%clear7/8 successful2 unsupported

Stability Notes

elapsed time

clear

leader cwebp, CV 80.1%, margin 13.2%

size ratio

tight

leader getwebp, CV 49.2%, margin 0.2%

SSIM mean

tight

leader getwebp, CV 1.1%, margin 0.0%

peak RSS

clear

leader cwebp, CV 102.9%, margin 28.0%

Tested tools

Tools included in this snapshot

These labels and versions come from the current publication snapshot so the page stays aligned with each rerun.

GetWebP (Cold Isolated)

1.3.0

cwebp

1.6.0

ImageMagick

7.1.2-21

ffmpeg

8.1

sharp-cli

5.2.0

squoosh-cli

version n/a

libvips

8.18.2

pngquant + cwebp

3.0.3

avifenc

1.4.1

Risk Notes

Known heavy paths

Slowest #1

avif

ffmpeg on p5-wikimedia-ui-png

55.08s730MB peak RSS13.8% ratioSSIM 0.997

Slowest #2

avif

ffmpeg on p4-wikimedia-reference-png

50.53s1225MB peak RSS17.1% ratioSSIM 0.989

Slowest #3

avif

ffmpeg on p7-wikimedia-web-png

25.32s454MB peak RSS8.9% ratioSSIM 0.993

Highest memory #1

avif

ffmpeg on p6-wikimedia-text-jpg

1.62s4343MB peak RSS17.7% ratioSSIM 0.958

Highest memory #2

avif

ffmpeg on p12-nasa-moon-expanded-jpg

2.31s3640MB peak RSS30.6% ratioSSIM 0.974

Highest memory #3

avif

ffmpeg on p13-nasa-saturn-expanded-jpg

920ms1280MB peak RSS27.5% ratioSSIM 0.973