BENCHMARKS

Every number on this page comes from pnpm benchmark <key> and is committed to the repo as JSON in benchmarks/results, once per machine. Each chart names its machine, toolchain and commit, so you can reproduce it.

PIXEL BY PIXEL

Direct pixel comparisons in JavaScript, WebAssembly, the native binary and the Python bindings.

Image IO excluded (pre-decoded RGBA buffers)

TOTAL TIME · 34 FIXTURES · MEAN OF 50 OR 25 RUNS · IO EXCLUDED

BlazeDiffOther librariesLower is better

#	Library	Runtime	Version	Total time	vs Pixelmatch
1	BlazeDiff	core, count only	2.0.0	371ms	5.23x faster
2	BlazeDiff (core-wasm)	core-wasm, count only	7.0.0	521ms	3.73x faster
3	BlazeDiff	core, with output	2.0.0	1.39s	1.40x faster
4	Pixelmatch	JS, count only	7.2.0	1.94s	baseline
5	Pixelmatch	JS, with output	7.2.0	3.43s	1.76x slower

Per-fixture results (34)

Fixture	Pixelmatch (JS, count only)	BlazeDiff (core, count only)	BlazeDiff (core-wasm) (core-wasm, count only)	Pixelmatch (JS, with output)	BlazeDiff (core, with output)	BlazeDiff (core, count only) vs Pixelmatch (JS, count only)	BlazeDiff (core-wasm) (core-wasm, count only) vs Pixelmatch (JS, count only)	BlazeDiff (core, with output) vs Pixelmatch (JS, count only)
4k/1	331ms	46.99ms	57.49ms	413ms	124ms	7.05x	5.76x	2.68x
4k/1 (identical)	17.91ms	5.02ms	5.08ms	90.52ms	79.34ms	3.56x	3.53x	0.23x
4k/2	321ms	69.31ms	98.97ms	413ms	149ms	4.63x	3.24x	2.16x
4k/2 (identical)	21.26ms	5.72ms	6.18ms	101ms	81.02ms	3.72x	3.44x	0.26x
4k/3	406ms	60.99ms	81.60ms	513ms	162ms	6.65x	4.97x	2.51x
4k/3 (identical)	25.40ms	7.71ms	7.97ms	122ms	107ms	3.29x	3.19x	0.24x
blazediff/1	1.33ms	0.21ms	0.42ms	3.31ms	1.09ms	6.32x	3.20x	1.22x
blazediff/1 (identical)	0.39ms	0.10ms	0.10ms	2.04ms	0.99ms	3.78x	4.07x	0.39x
blazediff/2	1.81ms	0.60ms	0.83ms	3.45ms	1.10ms	3.01x	2.18x	1.65x
blazediff/2 (identical)	0.33ms	0.07ms	0.07ms	1.67ms	0.52ms	4.65x	4.54x	0.65x
blazediff/3	11.76ms	5.12ms	7.73ms	19.27ms	11.31ms	2.30x	1.52x	1.04x
blazediff/3 (identical)	1.53ms	0.40ms	0.41ms	7.78ms	6.11ms	3.84x	3.73x	0.25x
blazediff/4	13.30ms	2.97ms	5.25ms	31.38ms	5.83ms	4.49x	2.53x	2.28x
blazediff/4 (identical)	3.51ms	0.94ms	0.97ms	18.04ms	4.03ms	3.73x	3.61x	0.87x
page/1	167ms	32.11ms	74.92ms	446ms	174ms	5.21x	2.23x	0.96x
page/1 (identical)	66.47ms	24.98ms	25.73ms	302ms	173ms	2.66x	2.58x	0.38x
page/2	492ms	84.76ms	120ms	690ms	182ms	5.80x	4.10x	2.70x
page/2 (identical)	46.54ms	17.33ms	18.13ms	213ms	113ms	2.69x	2.57x	0.41x
pixelmatch/1	0.61ms	0.17ms	0.12ms	1.21ms	0.38ms	3.59x	4.94x	1.59x
pixelmatch/1 (identical)	0.13ms	0.01ms	0.01ms	0.62ms	0.22ms	10.30x	11.62x	0.57x
pixelmatch/2	2.37ms	1.14ms	1.96ms	2.65ms	1.46ms	2.07x	1.21x	1.62x
pixelmatch/2 (identical)	0.06ms	0.00ms	0.01ms	0.31ms	0.24ms	15.55x	11.09x	0.27x
pixelmatch/3	0.41ms	0.13ms	0.13ms	1.03ms	0.33ms	3.16x	3.20x	1.24x
pixelmatch/3 (identical)	0.12ms	0.01ms	0.01ms	0.62ms	0.20ms	10.17x	11.25x	0.60x
pixelmatch/4	4.61ms	2.37ms	3.90ms	5.39ms	3.08ms	1.94x	1.18x	1.49x
pixelmatch/4 (identical)	0.17ms	0.01ms	0.01ms	0.86ms	0.67ms	13.18x	11.35x	0.25x
pixelmatch/5	0.22ms	0.13ms	0.06ms	0.52ms	0.59ms	1.72x	3.54x	0.37x
pixelmatch/5 (identical)	0.06ms	0.00ms	0.01ms	0.31ms	0.46ms	13.71x	8.78x	0.14x
pixelmatch/6	0.88ms	0.57ms	0.85ms	1.16ms	0.83ms	1.54x	1.03x	1.06x
pixelmatch/6 (identical)	0.06ms	0.00ms	0.01ms	0.31ms	0.25ms	13.02x	10.52x	0.25x
pixelmatch/7	1.36ms	0.60ms	0.87ms	2.51ms	1.25ms	2.28x	1.57x	1.08x
pixelmatch/7 (identical)	0.23ms	0.03ms	0.04ms	1.19ms	0.66ms	7.80x	6.55x	0.35x
same/1	1.62ms	0.43ms	0.45ms	8.28ms	2.34ms	3.76x	3.63x	0.69x
same/1 (identical)	1.62ms	0.43ms	0.44ms	8.27ms	2.34ms	3.76x	3.69x	0.69x
TOTAL	1.94s	371ms	521ms	3.43s	1.39s	5.23x	3.73x	1.40x

pnpm benchmark core · INTEL(R) XEON(R) PLATINUM 8581C CPU @ 2.30GHz · linux/x64 · Node v22.14.0 · rustc 1.99.1 (58cf8f9c3 2026-10-13) · 2026-11-11 · 24d85f1-dirty

pnpm benchmark core-wasm · INTEL(R) XEON(R) PLATINUM 8581C CPU @ 2.30GHz · linux/x64 · Node v22.14.0 · rustc 1.99.1 (58cf8f9c3 2026-10-13) · 2026-11-11 · 24d85f1-dirty

Image IO included (PNG files in, diff PNG out)

TOTAL TIME · 34 FIXTURES · MEAN OF 25 RUNS · IO INCLUDED

BlazeDiffOther librariesLower is better

#	Library	Runtime	Version	Total time	vs ODiff
1	BlazeDiff	core-native, own PNG	7.0.0	3.13s	2.54x faster
2	BlazeDiff	core-native	7.0.0	3.63s	2.19x faster
3	ODiff	native	4.3.8	7.96s	baseline
4	honeydiff	native	0.17.0	13.89s	1.74x slower

Own PNG means BLAZEDIFF_PNG_ENABLED=1, which decodes with blazediff-png instead of spng. The Python bindings run the same Rust core as core-native.

Per-fixture results (34)

Fixture	ODiff (native)	honeydiff (native)	BlazeDiff (core-native)	BlazeDiff (core-native, own PNG)	BlazeDiff (core-native) vs ODiff (native)	BlazeDiff (core-native, own PNG) vs ODiff (native)
4k/1	1.22s	1.82s	343ms	279ms	3.56x	4.38x
4k/1 (identical)	244ms	714ms	231ms	173ms	1.06x	1.41x
4k/2	1.59s	1.67s	427ms	332ms	3.71x	4.78x
4k/2 (identical)	304ms	853ms	286ms	203ms	1.06x	1.49x
4k/3	1.82s	1.66s	469ms	383ms	3.87x	4.75x
4k/3 (identical)	351ms	991ms	310ms	230ms	1.13x	1.53x
blazediff/1	4.01ms	4.26ms	5.06ms	1.61ms	0.79x	2.49x
blazediff/1 (identical)	2.04ms	4.19ms	1.01ms	0.93ms	2.01x	2.20x
blazediff/2	3.72ms	3.65ms	1.95ms	1.77ms	1.91x	2.10x
blazediff/2 (identical)	1.81ms	3.40ms	0.93ms	0.90ms	1.95x	2.02x
blazediff/3	44.97ms	42.59ms	21.04ms	15.44ms	2.14x	2.91x
blazediff/3 (identical)	17.65ms	36.51ms	14.03ms	8.97ms	1.26x	1.97x
blazediff/4	21.17ms	29.68ms	12.96ms	13.22ms	1.63x	1.60x
blazediff/4 (identical)	8.66ms	30.15ms	4.69ms	5.35ms	1.85x	1.62x
page/1	936ms	1.47s	623ms	621ms	1.50x	1.51x
page/1 (identical)	470ms	1.44s	323ms	328ms	1.46x	1.43x
page/2	744ms	2.13s	397ms	386ms	1.87x	1.93x
page/2 (identical)	134ms	908ms	139ms	127ms	0.97x	1.05x
pixelmatch/1	3.04ms	4.14ms	1.09ms	1.14ms	2.78x	2.67x
pixelmatch/1 (identical)	1.85ms	1.99ms	0.78ms	0.63ms	2.37x	2.94x
pixelmatch/2	3.41ms	4.98ms	1.56ms	1.39ms	2.18x	2.45x
pixelmatch/2 (identical)	0.63ms	1.73ms	0.56ms	0.36ms	1.11x	1.75x
pixelmatch/3	2.21ms	1.94ms	1.06ms	1.19ms	2.08x	1.86x
pixelmatch/3 (identical)	1.54ms	1.67ms	0.71ms	0.51ms	2.18x	3.00x
pixelmatch/4	11.01ms	11.53ms	4.55ms	3.76ms	2.42x	2.93x
pixelmatch/4 (identical)	3.08ms	5.64ms	2.19ms	1.19ms	1.41x	2.59x
pixelmatch/5	0.85ms	1.35ms	0.78ms	0.85ms	1.08x	0.99x
pixelmatch/5 (identical)	0.93ms	2.70ms	0.67ms	0.44ms	1.39x	2.12x
pixelmatch/6	5.71ms	4.76ms	1.77ms	4.52ms	3.22x	1.26x
pixelmatch/6 (identical)	1.20ms	1.62ms	0.80ms	0.53ms	1.49x	2.26x
pixelmatch/7	3.83ms	4.05ms	1.91ms	1.53ms	2.01x	2.50x
pixelmatch/7 (identical)	1.24ms	3.41ms	0.83ms	0.51ms	1.51x	2.42x
same/1	5.07ms	15.82ms	2.84ms	2.49ms	1.79x	2.04x
same/1 (identical)	5.10ms	13.30ms	2.61ms	2.91ms	1.96x	1.76x
TOTAL	7.96s	13.89s	3.63s	3.13s	2.19x	2.54x

pnpm benchmark core-native · INTEL(R) XEON(R) PLATINUM 8581C CPU @ 2.30GHz · linux/x64 · Node v22.14.0 · rustc 1.99.1 (58cf8f9c3 2026-10-13) · 2026-11-12 · 867ed3b-dirty

pnpm benchmark honeydiff · INTEL(R) XEON(R) PLATINUM 8581C CPU @ 2.30GHz · linux/x64 · Node v22.14.0 · rustc 1.99.1 (58cf8f9c3 2026-10-13) · 2026-11-12 · 867ed3b-dirty

STRUCTURAL

SSIM and its variants against ssim.js and the Rust dssim. The dssim run uses its own fixtures and best-of timing, so it has its own chart.

SSIM in JavaScript and native (image IO excluded)

TOTAL TIME · 22 FIXTURES · MEAN OF 25 RUNS · IO EXCLUDED

BlazeDiffOther librariesLower is better

#	Library	Runtime	Version	Total time	vs ssim.js
1	BlazeDiff	native, SSIM	6.1.1	97.65ms	23.49x faster
2	BlazeDiff	native, Hitchhiker's	6.1.1	237ms	9.69x faster
3	BlazeDiff	JS, Hitchhiker's	2.0.0	399ms	5.75x faster
4	BlazeDiff	JS, SSIM	2.0.0	1.03s	2.22x faster
5	ssim.js	JS, weber	3.5.0	2.24s	1.03x faster
6	ssim.js	JS, fast	3.5.0	2.29s	baseline

Per-fixture results (22)

Fixture	ssim.js (JS, fast)	BlazeDiff (JS, SSIM)	BlazeDiff (native, SSIM)	ssim.js (JS, weber)	BlazeDiff (JS, Hitchhiker's)	BlazeDiff (native, Hitchhiker's)	BlazeDiff (JS, SSIM) vs ssim.js (JS, fast)	BlazeDiff (native, SSIM) vs ssim.js (JS, fast)	BlazeDiff (JS, Hitchhiker's) vs ssim.js (JS, fast)	BlazeDiff (native, Hitchhiker's) vs ssim.js (JS, fast)
blazediff/1	129ms	67.36ms	6.58ms	87.16ms	9.92ms	2.88ms	1.91x	19.55x	12.97x	44.65x
blazediff/1 (identical)	129ms	67.46ms	6.61ms	87.71ms	10.05ms	2.93ms	1.92x	19.57x	12.86x	44.19x
blazediff/2	63.12ms	23.67ms	2.20ms	58.71ms	8.04ms	2.11ms	2.67x	28.75x	7.85x	29.87x
blazediff/2 (identical)	63.55ms	23.78ms	2.20ms	57.72ms	8.00ms	2.12ms	2.67x	28.86x	7.94x	29.93x
blazediff/3	194ms	97.32ms	8.25ms	208ms	45.85ms	24.28ms	1.99x	23.52x	4.23x	7.99x
blazediff/3 (identical)	194ms	97.11ms	8.96ms	208ms	44.84ms	23.89ms	2.00x	21.71x	4.34x	8.14x
blazediff/4	547ms	230ms	18.55ms	609ms	117ms	83.84ms	2.38x	29.50x	4.67x	6.53x
blazediff/4 (identical)	542ms	229ms	25.00ms	599ms	112ms	84.35ms	2.37x	21.70x	4.84x	6.43x
pixelmatch/1	38.25ms	20.14ms	1.99ms	26.05ms	3.14ms	0.75ms	1.90x	19.25x	12.17x	50.80x
pixelmatch/1 (identical)	38.65ms	20.04ms	1.99ms	25.80ms	3.12ms	0.76ms	1.93x	19.41x	12.39x	50.66x
pixelmatch/2	19.29ms	9.93ms	1.03ms	12.55ms	1.59ms	0.35ms	1.94x	18.65x	12.10x	54.37x
pixelmatch/2 (identical)	20.43ms	9.96ms	1.03ms	12.50ms	1.62ms	0.35ms	2.05x	19.76x	12.61x	58.09x
pixelmatch/3	38.95ms	20.09ms	1.99ms	26.25ms	3.12ms	0.78ms	1.94x	19.58x	12.49x	49.63x
pixelmatch/3 (identical)	39.01ms	20.08ms	1.99ms	25.62ms	3.14ms	0.75ms	1.94x	19.56x	12.42x	52.06x
pixelmatch/4	33.74ms	12.11ms	1.09ms	30.74ms	4.36ms	1.04ms	2.79x	30.98x	7.73x	32.39x
pixelmatch/4 (identical)	34.35ms	12.14ms	1.08ms	30.23ms	4.32ms	1.06ms	2.83x	31.70x	7.96x	32.32x
pixelmatch/5	19.31ms	9.87ms	1.04ms	12.33ms	1.56ms	0.36ms	1.96x	18.59x	12.39x	54.06x
pixelmatch/5 (identical)	19.96ms	9.96ms	1.04ms	12.68ms	1.61ms	0.36ms	2.00x	19.28x	12.39x	56.06x
pixelmatch/6	19.89ms	10.00ms	1.04ms	12.38ms	1.63ms	0.35ms	1.99x	19.21x	12.22x	56.05x
pixelmatch/6 (identical)	19.32ms	9.96ms	1.03ms	12.49ms	1.58ms	0.35ms	1.94x	18.72x	12.25x	54.70x
pixelmatch/7	44.74ms	16.99ms	1.47ms	41.19ms	5.80ms	1.45ms	2.63x	30.44x	7.72x	30.85x
pixelmatch/7 (identical)	44.81ms	17.00ms	1.49ms	39.52ms	5.91ms	1.48ms	2.64x	30.09x	7.59x	30.24x
TOTAL	2.29s	1.03s	97.65ms	2.24s	399ms	237ms	2.22x	23.49x	5.75x	9.69x

pnpm benchmark ssim · INTEL(R) XEON(R) PLATINUM 8581C CPU @ 2.30GHz · linux/x64 · Node v22.14.0 · rustc 1.99.1 (58cf8f9c3 2026-10-13) · 2026-11-12 · 20f7f63-dirty

pnpm benchmark hitchhikers-ssim · INTEL(R) XEON(R) PLATINUM 8581C CPU @ 2.30GHz · linux/x64 · Node v22.14.0 · rustc 1.99.1 (58cf8f9c3 2026-10-13) · 2026-11-12 · 20f7f63-dirty

Rust against dssim (image IO excluded)

TOTAL TIME, BEST-OF · 16 FIXTURES · IO EXCLUDED

BlazeDiffOther librariesLower is better

#	Library	Runtime	Total time	vs dssim
1	BlazeDiff	Rust, ssim	1.08s	11.65x faster
2	BlazeDiff	Rust, hitchhikers	1.70s	7.42x faster
3	BlazeDiff	Rust, ms-ssim	1.76s	7.19x faster
4	dssim	Rust	12.63s	baseline

dssim is a different algorithm (multi-scale, Lab chroma), so this compares cost, not scores.

Per-fixture results (16)

Fixture	MPx	dssim (Rust)	BlazeDiff (Rust, ssim)	BlazeDiff (Rust, ms-ssim)	BlazeDiff (Rust, hitchhikers)	BlazeDiff (Rust, ssim) vs dssim (Rust)	BlazeDiff (Rust, ms-ssim) vs dssim (Rust)	BlazeDiff (Rust, hitchhikers) vs dssim (Rust)
4k/1	17.9	3.38s	299ms	476ms	464ms	11.33x	7.11x	7.30x
4k/2	20.0	3.72s	343ms	537ms	508ms	10.85x	6.92x	7.32x
4k/3	24.0	4.38s	388ms	592ms	601ms	11.29x	7.39x	7.28x
alpha/1	0.0	2.29ms	0.51ms	0.66ms	0.16ms	4.48x	3.47x	13.93x
blazediff/1	0.4	31.62ms	6.40ms	6.46ms	2.69ms	4.94x	4.90x	11.77x
blazediff/2	0.4	24.61ms	2.09ms	5.73ms	2.05ms	11.77x	4.30x	11.99x
blazediff/3	1.6	213ms	7.57ms	26.99ms	19.54ms	28.07x	7.88x	10.88x
blazediff/4	3.8	600ms	21.35ms	67.67ms	79.98ms	28.09x	8.86x	7.50x
pixelmatch/1	0.1	8.15ms	2.02ms	2.48ms	0.70ms	4.04x	3.29x	11.63x
pixelmatch/2	0.1	3.86ms	1.03ms	1.17ms	0.33ms	3.73x	3.31x	11.65x
pixelmatch/3	0.1	8.07ms	1.98ms	2.53ms	0.71ms	4.07x	3.18x	11.42x
pixelmatch/4	0.2	11.67ms	0.98ms	3.00ms	1.00ms	11.85x	3.88x	11.66x
pixelmatch/5	0.1	3.86ms	1.03ms	1.16ms	0.34ms	3.74x	3.32x	11.50x
pixelmatch/6	0.1	3.94ms	1.05ms	1.15ms	0.34ms	3.76x	3.43x	11.72x
pixelmatch/7	0.3	16.64ms	1.42ms	4.04ms	1.44ms	11.76x	4.12x	11.54x
same/1	1.7	227ms	7.77ms	29.02ms	20.97ms	29.27x	7.84x	10.84x
TOTAL		12.63s	1.08s	1.76s	1.70s	11.65x	7.19x	7.42x

pnpm benchmark ssim-dssim · INTEL(R) XEON(R) PLATINUM 8581C CPU @ 2.30GHz · linux/x64 · Node v22.14.0 · rustc 1.99.1 (58cf8f9c3 2026-10-13) · best-of, iterations scaled by image size, dssim single-threaded · 2026-11-12 · 20f7f63-dirty

OBJECT

Deep object diffing against microdiff.

Object diff in JavaScript

TOTAL TIME · 8 FIXTURES · MEAN OF 10000 RUNS · IO EXCLUDED

BlazeDiffOther librariesLower is better

#	Library	Version	Total time	vs Microdiff
1	BlazeDiff	1.8.0	1.86ms	1.27x faster
2	Microdiff	1.5.0	2.36ms	baseline

Per-fixture results (8)

Fixture	Microdiff	BlazeDiff	BlazeDiff vs Microdiff
complex object - tag addition	0.00ms	0.00ms	1.36x
deep nested - timeout change	0.00ms	0.00ms	1.05x
large array - single item change	0.32ms	0.25ms	1.27x
large identical arrays	0.06ms	0.00ms	21.81x
large nested object - multiple small changes	1.98ms	1.60ms	1.24x
nested object - theme change	0.00ms	0.00ms	1.26x
simple object - age change	0.00ms	0.00ms	0.58x
simple object - identical	0.00ms	0.00ms	0.95x
TOTAL	2.36ms	1.86ms	1.27x

pnpm benchmark object · INTEL(R) XEON(R) PLATINUM 8581C CPU @ 2.30GHz · linux/x64 · Node v22.14.0 · rustc 1.99.1 (58cf8f9c3 2026-10-13) · 2026-11-12 · 20f7f63-dirty

PNG CODEC

The blazediff-png codec against spng, image-rs and zune-png in Rust, and against zune-png and jSquash in WebAssembly, single-threaded. Each encode table also shows the size of the files it wrote.

Decode (PNG to RGBA8)

TOTAL TIME, BEST-OF · 36 FIXTURES · IO EXCLUDED

BlazeDiffOther librariesLower is better

#	Library	Runtime	Version	Total time	vs spng
1	image-rs	Rust	-	1.69s	1.76x faster
2	blazediff	Rust	-	1.85s	1.61x faster
3	zune	Rust	-	2.34s	1.27x faster
4	blazediff	wasm	6.1.0	2.50s	1.19x faster
5	zune-png	wasm	0.5.2	2.93s	1.02x faster
6	spng	Rust	-	2.97s	baseline
7	jSquash	wasm	3.1.1	6.06s	2.04x slower

Per-fixture results (36)

Fixture	MPx	spng (Rust)	blazediff (Rust)	image-rs (Rust)	zune (Rust)	blazediff (wasm)	zune-png (wasm)	jSquash (wasm)	blazediff (Rust) vs spng (Rust)	blazediff (wasm) vs spng (Rust)
4k/1a.png	17.9	272ms	157ms	157ms	200ms	194ms	241ms	442ms	1.73x	1.40x
4k/1b.png	17.9	246ms	147ms	151ms	179ms	192ms	222ms	429ms	1.67x	1.28x
4k/2a.png	20.0	327ms	180ms	207ms	234ms	228ms	288ms	576ms	1.82x	1.44x
4k/2b.png	20.0	335ms	195ms	209ms	236ms	248ms	282ms	595ms	1.72x	1.35x
4k/3a.png	24.0	380ms	211ms	219ms	294ms	271ms	320ms	671ms	1.80x	1.40x
4k/3b.png	24.0	377ms	203ms	214ms	292ms	270ms	312ms	667ms	1.86x	1.40x
alpha/1a.png	0.0	0.13ms	0.06ms	0.06ms	0.06ms	0.10ms	0.12ms	0.36ms	2.22x	1.38x
alpha/1b.png	0.0	0.14ms	0.06ms	0.07ms	0.07ms	0.10ms	0.12ms	0.37ms	2.23x	1.32x
blazediff/1a.png	0.4	0.79ms	0.49ms	0.65ms	0.66ms	1.07ms	1.17ms	4.51ms	1.61x	0.74x
blazediff/1b.png	0.4	0.79ms	0.48ms	0.63ms	0.67ms	1.02ms	1.16ms	4.50ms	1.65x	0.77x
blazediff/2a.png	0.4	0.79ms	0.45ms	0.58ms	0.62ms	0.90ms	1.05ms	3.91ms	1.76x	0.88x
blazediff/2b.png	0.4	0.84ms	0.48ms	0.62ms	0.65ms	0.96ms	1.11ms	4.02ms	1.74x	0.88x
blazediff/3a.png	1.6	16.58ms	8.07ms	10.59ms	11.15ms	14.50ms	16.84ms	39.91ms	2.05x	1.14x
blazediff/3b.png	1.6	16.43ms	8.02ms	10.71ms	11.17ms	14.52ms	16.92ms	40.18ms	2.05x	1.13x
blazediff/4a.png	3.8	3.99ms	2.87ms	3.63ms	3.92ms	6.46ms	6.69ms	31.50ms	1.39x	0.62x
blazediff/4b.png	3.8	4.01ms	2.89ms	3.66ms	3.94ms	6.53ms	6.81ms	32.20ms	1.39x	0.61x
page/1a.png	58.9	356ms	283ms	221ms	329ms	375ms	431ms	773ms	1.26x	0.95x
page/1b.png	58.9	353ms	278ms	221ms	319ms	372ms	418ms	780ms	1.27x	0.95x
page/2a.png	41.7	130ms	80.41ms	23.36ms	107ms	144ms	169ms	458ms	1.62x	0.91x
page/2b.png	41.7	131ms	80.49ms	22.79ms	103ms	147ms	166ms	453ms	1.63x	0.89x
pixelmatch/1a.png	0.1	0.84ms	0.45ms	0.51ms	0.57ms	0.78ms	0.96ms	2.08ms	1.87x	1.08x
pixelmatch/1b.png	0.1	0.79ms	0.34ms	0.42ms	0.47ms	0.61ms	0.78ms	1.91ms	2.30x	1.31x
pixelmatch/2a.png	0.1	0.35ms	0.10ms	0.11ms	0.15ms	0.19ms	0.20ms	0.75ms	3.60x	1.87x
pixelmatch/2b.png	0.1	0.35ms	0.10ms	0.10ms	0.15ms	0.18ms	0.20ms	0.76ms	3.66x	1.89x
pixelmatch/3a.png	0.1	0.63ms	0.32ms	0.36ms	0.41ms	0.55ms	0.69ms	1.64ms	1.96x	1.15x
pixelmatch/3b.png	0.1	0.65ms	0.32ms	0.37ms	0.42ms	0.54ms	0.66ms	1.64ms	2.02x	1.21x
pixelmatch/4a.png	0.2	2.46ms	0.96ms	1.30ms	1.63ms	1.65ms	1.93ms	4.27ms	2.56x	1.49x
pixelmatch/4b.png	0.2	2.52ms	1.15ms	1.19ms	1.35ms	1.90ms	2.14ms	4.56ms	2.20x	1.33x
pixelmatch/5a.png	0.1	0.53ms	0.26ms	0.24ms	0.26ms	0.43ms	0.43ms	0.83ms	2.03x	1.23x
pixelmatch/5b.png	0.1	0.47ms	0.26ms	0.24ms	0.26ms	0.42ms	0.42ms	0.62ms	1.82x	1.11x
pixelmatch/6a.png	0.1	0.81ms	0.32ms	0.35ms	0.37ms	0.54ms	0.55ms	1.14ms	2.51x	1.50x
pixelmatch/6b.png	0.1	0.91ms	0.46ms	0.41ms	0.51ms	0.73ms	0.82ms	1.40ms	1.99x	1.25x
pixelmatch/7a.png	0.3	0.58ms	0.16ms	0.18ms	0.30ms	0.36ms	0.40ms	2.03ms	3.62x	1.62x
pixelmatch/7b.png	0.3	0.58ms	0.16ms	0.19ms	0.30ms	0.37ms	0.42ms	2.02ms	3.61x	1.57x
same/1a.png	1.7	2.83ms	1.60ms	2.21ms	2.41ms	3.37ms	6.39ms	13.72ms	1.77x	0.84x
same/1b.png	1.7	2.83ms	1.60ms	2.21ms	2.40ms	3.34ms	6.39ms	13.61ms	1.77x	0.85x
TOTAL		2.97s	1.85s	1.69s	2.34s	2.50s	2.93s	6.06s	1.61x	1.19x

pnpm benchmark png · INTEL(R) XEON(R) PLATINUM 8581C CPU @ 2.30GHz · linux/x64 · Node v22.14.0 · rustc 1.99.1 (58cf8f9c3 2026-10-13) · best-of, iterations scaled by image size, single-threaded · 2026-11-12 · 867ed3b-dirty

pnpm benchmark png-wasm · INTEL(R) XEON(R) PLATINUM 8581C CPU @ 2.30GHz · linux/x64 · Node v22.14.0 · rustc 1.99.1 (58cf8f9c3 2026-10-13) · best-of, iterations scaled by image size, single-threaded, Node (V8) running wasm32 with SIMD · 2026-11-12 · 867ed3b-dirty

Encode, no compression

TOTAL TIME, BEST-OF · 36 FIXTURES · IO EXCLUDED

BlazeDiffOther librariesLower is better

#	Library	Runtime	Version	Total time	vs spng	Output size	Share of spng
1	blazediff	Rust	-	614ms	3.34x faster	1.28 GB	99.8%
2	blazediff	wasm	6.1.0	1.44s	1.43x faster	1.28 GB	99.8%
3	image-rs	Rust	-	1.51s	1.36x faster	1.28 GB	99.8%
4	spng	Rust	-	2.05s	baseline	1.28 GB	baseline
5	zune-png	wasm	0.5.2	2.68s	1.31x slower	1.28 GB	100.0%
6	zune	Rust	-	2.80s	1.37x slower	1.28 GB	100.0%

Levels: blazediff stored · spng stored · image-rs stored · zune stored. Levels: blazediff stored · zune-png stored.

Per-fixture results (36)

Fixture	MPx	spng (Rust)	blazediff (Rust)	image-rs (Rust)	zune (Rust)	blazediff (wasm)	zune-png (wasm)	blazediff (Rust) vs spng (Rust)	blazediff (wasm) vs spng (Rust)
4k/1a.png	17.9	103ms	34.64ms	67.69ms	144ms	70.71ms	135ms	2.98x	1.46x
4k/1b.png	17.9	102ms	31.63ms	70.76ms	145ms	70.56ms	135ms	3.22x	1.44x
4k/2a.png	20.0	113ms	35.01ms	87.49ms	177ms	62.57ms	153ms	3.22x	1.80x
4k/2b.png	20.0	116ms	38.83ms	82.37ms	168ms	78.98ms	153ms	2.98x	1.47x
4k/3a.png	24.0	140ms	46.31ms	96.87ms	202ms	97.04ms	182ms	3.03x	1.45x
4k/3b.png	24.0	139ms	43.79ms	96.28ms	201ms	96.33ms	182ms	3.18x	1.45x
alpha/1a.png	0.0	0.08ms	0.01ms	0.02ms	0.09ms	0.08ms	0.12ms	13.32x	1.05x
alpha/1b.png	0.0	0.08ms	0.01ms	0.02ms	0.09ms	0.08ms	0.12ms	12.10x	1.00x
blazediff/1a.png	0.4	1.14ms	0.11ms	0.39ms	1.40ms	1.02ms	1.76ms	10.46x	1.12x
blazediff/1b.png	0.4	1.15ms	0.11ms	0.39ms	1.34ms	1.01ms	1.76ms	10.62x	1.14x
blazediff/2a.png	0.4	0.92ms	0.08ms	0.31ms	1.10ms	0.81ms	1.42ms	12.05x	1.14x
blazediff/2b.png	0.4	0.92ms	0.08ms	0.30ms	1.08ms	0.81ms	1.42ms	12.07x	1.14x
blazediff/3a.png	1.6	4.39ms	0.43ms	1.47ms	5.25ms	3.74ms	6.87ms	10.19x	1.17x
blazediff/3b.png	1.6	4.31ms	0.43ms	1.47ms	5.20ms	3.74ms	6.95ms	10.01x	1.15x
blazediff/4a.png	3.8	9.92ms	1.02ms	9.79ms	12.69ms	8.75ms	17.33ms	9.72x	1.13x
blazediff/4b.png	3.8	9.92ms	1.02ms	9.72ms	12.64ms	8.83ms	17.18ms	9.73x	1.12x
page/1a.png	58.9	373ms	113ms	287ms	504ms	269ms	492ms	3.30x	1.39x
page/1b.png	58.9	382ms	111ms	281ms	500ms	269ms	488ms	3.44x	1.42x
page/2a.png	41.7	270ms	77.44ms	205ms	352ms	191ms	342ms	3.48x	1.41x
page/2b.png	41.7	268ms	77.49ms	204ms	351ms	192ms	340ms	3.45x	1.39x
pixelmatch/1a.png	0.1	0.30ms	0.02ms	0.06ms	0.33ms	0.28ms	0.49ms	16.89x	1.06x
pixelmatch/1b.png	0.1	0.30ms	0.02ms	0.06ms	0.33ms	0.25ms	0.47ms	16.85x	1.20x
pixelmatch/2a.png	0.1	0.14ms	0.01ms	0.03ms	0.16ms	0.12ms	0.21ms	14.65x	1.21x
pixelmatch/2b.png	0.1	0.14ms	0.01ms	0.02ms	0.16ms	0.12ms	0.21ms	14.60x	1.17x
pixelmatch/3a.png	0.1	0.30ms	0.02ms	0.06ms	0.33ms	0.25ms	0.46ms	16.94x	1.21x
pixelmatch/3b.png	0.1	0.30ms	0.02ms	0.06ms	0.34ms	0.24ms	0.46ms	17.32x	1.27x
pixelmatch/4a.png	0.2	0.42ms	0.03ms	0.10ms	0.52ms	0.37ms	0.66ms	15.70x	1.14x
pixelmatch/4b.png	0.2	0.44ms	0.03ms	0.10ms	0.48ms	0.38ms	0.65ms	16.35x	1.18x
pixelmatch/5a.png	0.1	0.14ms	0.01ms	0.03ms	0.16ms	0.12ms	0.20ms	13.17x	1.20x
pixelmatch/5b.png	0.1	0.14ms	0.01ms	0.03ms	0.16ms	0.12ms	0.20ms	14.47x	1.20x
pixelmatch/6a.png	0.1	0.14ms	0.01ms	0.02ms	0.16ms	0.12ms	0.20ms	14.51x	1.21x
pixelmatch/6b.png	0.1	0.14ms	0.01ms	0.03ms	0.16ms	0.12ms	0.20ms	14.41x	1.21x
pixelmatch/7a.png	0.3	0.59ms	0.04ms	0.14ms	0.72ms	0.53ms	0.95ms	14.99x	1.11x
pixelmatch/7b.png	0.3	0.59ms	0.04ms	0.14ms	0.72ms	0.54ms	0.96ms	14.98x	1.09x
same/1a.png	1.7	4.60ms	0.46ms	1.63ms	5.87ms	4.07ms	7.22ms	9.98x	1.13x
same/1b.png	1.7	4.58ms	0.46ms	2.06ms	5.56ms	4.00ms	7.30ms	9.90x	1.14x
TOTAL		2.05s	614ms	1.51s	2.80s	1.44s	2.68s	3.34x	1.43x

Per-fixture sizes (36)

Fixture	MPx	spng (Rust)	blazediff (Rust)	image-rs (Rust)	zune (Rust)	blazediff (wasm)	zune-png (wasm)	blazediff (Rust) vs spng (Rust)	blazediff (wasm) vs spng (Rust)
4k/1a.png	17.9	68.5 MB	68.4 MB	68.4 MB	68.5 MB	68.4 MB	68.5 MB	99.8%	99.8%
4k/1b.png	17.9	68.5 MB	68.4 MB	68.4 MB	68.5 MB	68.4 MB	68.5 MB	99.8%	99.8%
4k/2a.png	20.0	76.3 MB	76.2 MB	76.2 MB	76.3 MB	76.2 MB	76.3 MB	99.8%	99.8%
4k/2b.png	20.0	76.3 MB	76.2 MB	76.2 MB	76.3 MB	76.2 MB	76.3 MB	99.8%	99.8%
4k/3a.png	24.0	91.7 MB	91.6 MB	91.6 MB	91.7 MB	91.6 MB	91.7 MB	99.9%	99.9%
4k/3b.png	24.0	91.7 MB	91.6 MB	91.6 MB	91.7 MB	91.6 MB	91.7 MB	99.9%	99.9%
alpha/1a.png	0.0	144.5 KB	144.3 KB	144.3 KB	144.5 KB	144.3 KB	144.5 KB	99.8%	99.8%
alpha/1b.png	0.0	144.5 KB	144.3 KB	144.3 KB	144.5 KB	144.3 KB	144.5 KB	99.8%	99.8%
blazediff/1a.png	0.4	1.6 MB	1.6 MB	1.6 MB	1.6 MB	1.6 MB	1.6 MB	99.8%	99.8%
blazediff/1b.png	0.4	1.6 MB	1.6 MB	1.6 MB	1.6 MB	1.6 MB	1.6 MB	99.8%	99.8%
blazediff/2a.png	0.4	1.3 MB	1.3 MB	1.3 MB	1.3 MB	1.3 MB	1.3 MB	99.8%	99.8%
blazediff/2b.png	0.4	1.3 MB	1.3 MB	1.3 MB	1.3 MB	1.3 MB	1.3 MB	99.8%	99.8%
blazediff/3a.png	1.6	6.2 MB	6.2 MB	6.2 MB	6.2 MB	6.2 MB	6.2 MB	99.8%	99.8%
blazediff/3b.png	1.6	6.2 MB	6.2 MB	6.2 MB	6.2 MB	6.2 MB	6.2 MB	99.8%	99.8%
blazediff/4a.png	3.8	14.5 MB	14.4 MB	14.4 MB	14.5 MB	14.4 MB	14.5 MB	99.8%	99.8%
blazediff/4b.png	3.8	14.5 MB	14.4 MB	14.4 MB	14.5 MB	14.4 MB	14.5 MB	99.8%	99.8%
page/1a.png	58.9	225.2 MB	224.9 MB	224.9 MB	225.2 MB	224.9 MB	225.2 MB	99.8%	99.8%
page/1b.png	58.9	225.2 MB	224.9 MB	224.9 MB	225.2 MB	224.9 MB	225.2 MB	99.8%	99.8%
page/2a.png	41.7	159.4 MB	159.1 MB	159.1 MB	159.4 MB	159.1 MB	159.4 MB	99.8%	99.8%
page/2b.png	41.7	159.4 MB	159.1 MB	159.1 MB	159.4 MB	159.1 MB	159.4 MB	99.8%	99.8%
pixelmatch/1a.png	0.1	513.1 KB	512.4 KB	512.4 KB	513.1 KB	512.4 KB	513.1 KB	99.8%	99.8%
pixelmatch/1b.png	0.1	513.1 KB	512.4 KB	512.4 KB	513.1 KB	512.4 KB	513.1 KB	99.8%	99.8%
pixelmatch/2a.png	0.1	256.7 KB	256.3 KB	256.3 KB	256.7 KB	256.3 KB	256.7 KB	99.8%	99.8%
pixelmatch/2b.png	0.1	256.7 KB	256.3 KB	256.3 KB	256.7 KB	256.3 KB	256.7 KB	99.8%	99.8%
pixelmatch/3a.png	0.1	513.1 KB	512.4 KB	512.4 KB	513.1 KB	512.4 KB	513.1 KB	99.8%	99.8%
pixelmatch/3b.png	0.1	513.1 KB	512.4 KB	512.4 KB	513.1 KB	512.4 KB	513.1 KB	99.8%	99.8%
pixelmatch/4a.png	0.2	706.5 KB	705.4 KB	705.4 KB	706.5 KB	705.4 KB	706.5 KB	99.8%	99.8%
pixelmatch/4b.png	0.2	706.5 KB	705.4 KB	705.4 KB	706.5 KB	705.4 KB	706.5 KB	99.8%	99.8%
pixelmatch/5a.png	0.1	256.7 KB	256.3 KB	256.3 KB	256.7 KB	256.3 KB	256.7 KB	99.8%	99.8%
pixelmatch/5b.png	0.1	256.7 KB	256.3 KB	256.3 KB	256.7 KB	256.3 KB	256.7 KB	99.8%	99.8%
pixelmatch/6a.png	0.1	256.7 KB	256.3 KB	256.3 KB	256.7 KB	256.3 KB	256.7 KB	99.8%	99.8%
pixelmatch/6b.png	0.1	256.7 KB	256.3 KB	256.3 KB	256.7 KB	256.3 KB	256.7 KB	99.8%	99.8%
pixelmatch/7a.png	0.3	978.7 KB	977.2 KB	977.2 KB	978.6 KB	977.2 KB	978.6 KB	99.8%	99.8%
pixelmatch/7b.png	0.3	978.7 KB	977.2 KB	977.2 KB	978.6 KB	977.2 KB	978.6 KB	99.8%	99.8%
same/1a.png	1.7	6.6 MB	6.6 MB	6.6 MB	6.6 MB	6.6 MB	6.6 MB	99.8%	99.8%
same/1b.png	1.7	6.6 MB	6.6 MB	6.6 MB	6.6 MB	6.6 MB	6.6 MB	99.8%	99.8%
TOTAL		1.28 GB	1.28 GB	1.28 GB	1.28 GB	1.28 GB	1.28 GB	99.8%	99.8%

Encode, compressed

TOTAL TIME, BEST-OF · 36 FIXTURES · IO EXCLUDED

BlazeDiffOther librariesLower is better

#	Library	Runtime	Version	Total time	vs spng	Output size	Share of spng
1	zune-png	wasm, default	0.5.2	2.66s	8.06x faster	1.28 GB	614.8%
2	zune	Rust, half	-	2.80s	7.66x faster	1.28 GB	614.8%
3	blazediff	wasm, default	6.1.0	3.17s	6.76x faster	206.8 MB	97.1%
4	jSquash	wasm, default	3.1.1	3.46s	6.20x faster	283.2 MB	132.9%
5	image-rs	Rust, half	-	10.81s	1.98x faster	205.1 MB	96.3%
6	blazediff	Rust, half	-	19.88s	1.08x faster	200.2 MB	93.9%
7	spng	Rust, half	-	21.42s	baseline	213.1 MB	baseline

Levels: blazediff libdeflate 6 · spng zlib 4 · image-rs flate2 4 · zune stored. Levels: blazediff fdeflate, adaptive filter · zune-png stored · jSquash png crate default.

Per-fixture results (36)

Fixture	MPx	spng (Rust, half)	blazediff (Rust, half)	image-rs (Rust, half)	zune (Rust, half)	blazediff (wasm, default)	zune-png (wasm, default)	jSquash (wasm, default)	blazediff (Rust, half) vs spng (Rust, half)	blazediff (wasm, default) vs spng (Rust, half)
4k/1a.png	17.9	1.91s	1.78s	1.16s	145ms	245ms	136ms	289ms	1.07x	7.82x
4k/1b.png	17.9	1.62s	1.62s	971ms	142ms	232ms	135ms	272ms	1.01x	6.99x
4k/2a.png	20.0	2.13s	1.77s	1.26s	181ms	247ms	138ms	318ms	1.21x	8.63x
4k/2b.png	20.0	2.19s	1.79s	1.29s	169ms	246ms	154ms	330ms	1.22x	8.91x
4k/3a.png	24.0	2.64s	2.30s	1.62s	203ms	339ms	186ms	399ms	1.15x	7.79x
4k/3b.png	24.0	2.61s	2.29s	1.58s	199ms	328ms	183ms	400ms	1.14x	7.94x
alpha/1a.png	0.0	1.09ms	1.16ms	0.33ms	0.09ms	0.16ms	0.12ms	0.17ms	0.94x	6.77x
alpha/1b.png	0.0	1.08ms	1.17ms	0.34ms	0.09ms	0.16ms	0.12ms	0.17ms	0.92x	6.66x
blazediff/1a.png	0.4	12.77ms	11.64ms	3.25ms	1.40ms	3.25ms	1.76ms	2.63ms	1.10x	3.92x
blazediff/1b.png	0.4	12.70ms	11.64ms	3.15ms	1.34ms	3.26ms	1.76ms	2.63ms	1.09x	3.89x
blazediff/2a.png	0.4	10.49ms	9.84ms	2.73ms	1.08ms	1.31ms	1.42ms	1.80ms	1.07x	8.02x
blazediff/2b.png	0.4	10.63ms	10.21ms	2.79ms	1.10ms	1.33ms	1.42ms	1.80ms	1.04x	7.98x
blazediff/3a.png	1.6	84.38ms	90.62ms	40.06ms	5.24ms	16.34ms	6.78ms	16.74ms	0.93x	5.16x
blazediff/3b.png	1.6	83.62ms	90.28ms	39.21ms	5.19ms	16.63ms	6.79ms	16.44ms	0.93x	5.03x
blazediff/4a.png	3.8	104ms	90.92ms	22.51ms	12.61ms	17.21ms	17.24ms	15.36ms	1.14x	6.02x
blazediff/4b.png	3.8	103ms	90.88ms	22.47ms	12.58ms	17.21ms	17.21ms	15.42ms	1.14x	6.01x
page/1a.png	58.9	2.23s	2.23s	739ms	499ms	500ms	489ms	367ms	1.00x	4.45x
page/1b.png	58.9	2.22s	2.23s	734ms	504ms	501ms	488ms	363ms	0.99x	4.42x
page/2a.png	41.7	1.62s	1.64s	630ms	352ms	215ms	333ms	306ms	0.99x	7.55x
page/2b.png	41.7	1.61s	1.62s	628ms	347ms	203ms	339ms	308ms	0.99x	7.94x
pixelmatch/1a.png	0.1	5.08ms	5.19ms	1.84ms	0.33ms	0.96ms	0.49ms	0.75ms	0.98x	5.28x
pixelmatch/1b.png	0.1	5.07ms	5.19ms	1.83ms	0.33ms	0.96ms	0.47ms	0.73ms	0.98x	5.27x
pixelmatch/2a.png	0.1	6.09ms	4.44ms	3.65ms	0.16ms	0.50ms	0.21ms	0.81ms	1.37x	12.28x
pixelmatch/2b.png	0.1	6.22ms	4.44ms	3.75ms	0.16ms	0.50ms	0.21ms	0.80ms	1.40x	12.38x
pixelmatch/3a.png	0.1	4.14ms	4.67ms	1.20ms	0.33ms	0.97ms	0.46ms	0.64ms	0.89x	4.26x
pixelmatch/3b.png	0.1	4.22ms	4.66ms	1.21ms	0.34ms	0.95ms	0.46ms	0.64ms	0.91x	4.46x
pixelmatch/4a.png	0.2	16.35ms	12.48ms	9.95ms	0.52ms	2.13ms	0.66ms	2.42ms	1.31x	7.68x
pixelmatch/4b.png	0.2	17.10ms	12.92ms	10.29ms	0.48ms	2.09ms	0.66ms	2.44ms	1.32x	8.16x
pixelmatch/5a.png	0.1	1.95ms	2.18ms	0.51ms	0.16ms	0.47ms	0.20ms	0.45ms	0.90x	4.12x
pixelmatch/5b.png	0.1	1.93ms	2.17ms	0.50ms	0.16ms	0.47ms	0.20ms	0.45ms	0.89x	4.14x
pixelmatch/6a.png	0.1	4.05ms	3.99ms	2.66ms	0.16ms	0.70ms	0.20ms	0.71ms	1.01x	5.81x
pixelmatch/6b.png	0.1	3.64ms	3.85ms	2.29ms	0.16ms	0.70ms	0.20ms	0.67ms	0.95x	5.24x
pixelmatch/7a.png	0.3	10.87ms	11.31ms	4.32ms	0.72ms	1.28ms	0.95ms	1.80ms	0.96x	8.47x
pixelmatch/7b.png	0.3	10.78ms	11.30ms	4.30ms	0.72ms	1.29ms	0.96ms	1.80ms	0.95x	8.38x
same/1a.png	1.7	51.95ms	48.79ms	12.94ms	5.87ms	10.09ms	7.23ms	8.51ms	1.06x	5.15x
same/1b.png	1.7	51.93ms	48.81ms	12.94ms	5.57ms	10.09ms	7.23ms	8.47ms	1.06x	5.15x
TOTAL		21.42s	19.88s	10.81s	2.80s	3.17s	2.66s	3.46s	1.08x	6.76x

Per-fixture sizes (36)

Fixture	MPx	spng (Rust, half)	blazediff (Rust, half)	image-rs (Rust, half)	zune (Rust, half)	blazediff (wasm, default)	zune-png (wasm, default)	jSquash (wasm, default)	blazediff (Rust, half) vs spng (Rust, half)	blazediff (wasm, default) vs spng (Rust, half)
4k/1a.png	17.9	21.3 MB	20.6 MB	21.5 MB	68.5 MB	19.9 MB	68.5 MB	25.8 MB	96.6%	93.1%
4k/1b.png	17.9	18.2 MB	17.2 MB	17.9 MB	68.5 MB	18.4 MB	68.5 MB	24.5 MB	94.5%	100.8%
4k/2a.png	20.0	27.1 MB	26.1 MB	26.6 MB	76.3 MB	28.0 MB	76.3 MB	37.1 MB	96.2%	103.6%
4k/2b.png	20.0	27.6 MB	26.6 MB	27.2 MB	76.3 MB	28.1 MB	76.3 MB	37.1 MB	96.6%	101.8%
4k/3a.png	24.0	35.0 MB	32.1 MB	33.1 MB	91.7 MB	35.5 MB	91.7 MB	43.2 MB	91.7%	101.4%
4k/3b.png	24.0	34.5 MB	31.6 MB	32.6 MB	91.7 MB	35.1 MB	91.7 MB	42.8 MB	91.5%	101.5%
alpha/1a.png	0.0	2.9 KB	2.8 KB	3.0 KB	144.5 KB	2.3 KB	144.5 KB	4.5 KB	95.3%	77.6%
alpha/1b.png	0.0	3.0 KB	2.8 KB	3.0 KB	144.5 KB	2.2 KB	144.5 KB	4.5 KB	95.2%	75.0%
blazediff/1a.png	0.4	35.4 KB	30.8 KB	30.2 KB	1.6 MB	67.9 KB	1.6 MB	152.5 KB	86.9%	191.8%
blazediff/1b.png	0.4	35.4 KB	30.9 KB	30.3 KB	1.6 MB	68.1 KB	1.6 MB	152.8 KB	87.1%	192.1%
blazediff/2a.png	0.4	38.1 KB	31.5 KB	30.1 KB	1.3 MB	19.6 KB	1.3 MB	77.8 KB	82.6%	51.5%
blazediff/2b.png	0.4	39.8 KB	32.8 KB	31.5 KB	1.3 MB	20.2 KB	1.3 MB	79.9 KB	82.3%	50.8%
blazediff/3a.png	1.6	877.0 KB	815.5 KB	835.0 KB	6.2 MB	996.6 KB	6.2 MB	1.2 MB	93.0%	113.6%
blazediff/3b.png	1.6	853.3 KB	792.2 KB	812.1 KB	6.2 MB	978.8 KB	6.2 MB	1.2 MB	92.8%	114.7%
blazediff/4a.png	3.8	114.0 KB	98.7 KB	100.5 KB	14.5 MB	307.2 KB	14.5 MB	232.3 KB	86.6%	269.6%
blazediff/4b.png	3.8	114.1 KB	98.3 KB	100.4 KB	14.5 MB	328.9 KB	14.5 MB	236.9 KB	86.1%	288.3%
page/1a.png	58.9	12.0 MB	11.1 MB	11.1 MB	225.2 MB	12.4 MB	225.2 MB	16.7 MB	92.5%	103.8%
page/1b.png	58.9	11.9 MB	11.0 MB	11.0 MB	225.2 MB	12.4 MB	225.2 MB	16.7 MB	92.5%	103.8%
page/2a.png	41.7	11.0 MB	10.3 MB	10.4 MB	159.4 MB	6.5 MB	159.4 MB	16.8 MB	93.9%	58.9%
page/2b.png	41.7	11.0 MB	10.4 MB	10.5 MB	159.4 MB	6.5 MB	159.4 MB	16.9 MB	94.0%	58.7%
pixelmatch/1a.png	0.1	32.2 KB	31.8 KB	33.4 KB	513.1 KB	37.0 KB	513.1 KB	40.0 KB	98.9%	114.9%
pixelmatch/1b.png	0.1	32.2 KB	31.9 KB	33.4 KB	513.1 KB	36.9 KB	513.1 KB	40.0 KB	98.9%	114.5%
pixelmatch/2a.png	0.1	96.9 KB	90.8 KB	91.0 KB	256.7 KB	44.9 KB	256.7 KB	122.3 KB	93.8%	46.3%
pixelmatch/2b.png	0.1	99.9 KB	94.4 KB	94.3 KB	256.7 KB	46.0 KB	256.7 KB	124.7 KB	94.4%	46.0%
pixelmatch/3a.png	0.1	14.7 KB	13.9 KB	13.8 KB	513.1 KB	27.8 KB	513.1 KB	33.6 KB	94.6%	189.6%
pixelmatch/3b.png	0.1	14.3 KB	13.7 KB	13.5 KB	513.1 KB	27.9 KB	513.1 KB	33.7 KB	95.7%	195.6%
pixelmatch/4a.png	0.2	254.1 KB	240.1 KB	241.3 KB	706.5 KB	280.8 KB	706.5 KB	317.8 KB	94.5%	110.5%
pixelmatch/4b.png	0.2	268.1 KB	251.0 KB	251.9 KB	706.5 KB	299.9 KB	706.5 KB	338.2 KB	93.6%	111.9%
pixelmatch/5a.png	0.1	3.3 KB	3.0 KB	3.1 KB	256.7 KB	14.6 KB	256.7 KB	43.5 KB	91.4%	436.8%
pixelmatch/5b.png	0.1	3.3 KB	3.2 KB	3.2 KB	256.7 KB	13.9 KB	256.7 KB	42.6 KB	98.5%	422.3%
pixelmatch/6a.png	0.1	50.7 KB	44.4 KB	48.5 KB	256.7 KB	82.7 KB	256.7 KB	105.0 KB	87.6%	163.1%
pixelmatch/6b.png	0.1	37.9 KB	32.0 KB	36.5 KB	256.7 KB	65.5 KB	256.7 KB	87.5 KB	84.6%	173.1%
pixelmatch/7a.png	0.3	96.1 KB	88.2 KB	87.4 KB	978.6 KB	51.2 KB	978.6 KB	144.8 KB	91.8%	53.3%
pixelmatch/7b.png	0.3	94.8 KB	87.3 KB	86.5 KB	978.6 KB	50.5 KB	978.6 KB	143.2 KB	92.1%	53.3%
same/1a.png	1.7	140.3 KB	124.9 KB	126.7 KB	6.6 MB	206.3 KB	6.6 MB	306.2 KB	89.1%	147.1%
same/1b.png	1.7	140.3 KB	124.9 KB	126.7 KB	6.6 MB	206.3 KB	6.6 MB	306.2 KB	89.1%	147.1%
TOTAL		213.1 MB	200.2 MB	205.1 MB	1.28 GB	206.8 MB	1.28 GB	283.2 MB	93.9%	97.1%