fix: handle malformed objects more gracefully

[Mythie]

No description provided.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
core	Ready	Preview, Comment	Jul 2, 2026 4:24am

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Benchmark Results

Comparison

Load PDF

Benchmark	Mean	p99	RME	Samples
libpdf	2.18ms	3.17ms	±1.6%	230
pdf-lib	38.86ms	43.21ms	±3.4%	13
@cantoo/pdf-lib	40.28ms	45.25ms	±2.7%	13

Create blank PDF

Benchmark	Mean	p99	RME	Samples
libpdf	65μs	152μs	±1.5%	7751
pdf-lib	368μs	1.38ms	±2.3%	1360
@cantoo/pdf-lib	402μs	1.73ms	±2.8%	1245

Add 10 pages

Benchmark	Mean	p99	RME	Samples
libpdf	125μs	237μs	±1.0%	3999
pdf-lib	467μs	1.96ms	±3.2%	1070
@cantoo/pdf-lib	432μs	2.28ms	±3.7%	1158

Draw 50 rectangles

Benchmark	Mean	p99	RME	Samples
libpdf	369μs	946μs	±1.5%	1355
pdf-lib	1.45ms	5.16ms	±6.5%	347
@cantoo/pdf-lib	1.80ms	4.90ms	±5.4%	278

Load and save PDF

Benchmark	Mean	p99	RME	Samples
libpdf	2.26ms	3.22ms	±1.5%	222
pdf-lib	76.88ms	83.93ms	±3.4%	10
@cantoo/pdf-lib	143.53ms	149.10ms	±1.6%	10

Load, modify, and save PDF

Benchmark	Mean	p99	RME	Samples
libpdf	53.41ms	62.43ms	±8.3%	10
pdf-lib	74.86ms	81.16ms	±3.7%	10
@cantoo/pdf-lib	144.45ms	155.50ms	±2.0%	10

Extract single page from 100-page PDF

Benchmark	Mean	p99	RME	Samples
libpdf	3.66ms	4.86ms	±1.1%	137
pdf-lib	9.03ms	16.07ms	±3.1%	56
@cantoo/pdf-lib	9.63ms	11.82ms	±2.2%	52

Split 100-page PDF into single-page PDFs

Benchmark	Mean	p99	RME	Samples
libpdf	40.44ms	43.08ms	±2.2%	13
pdf-lib	75.99ms	79.77ms	±4.3%	7
@cantoo/pdf-lib	88.46ms	98.68ms	±8.8%	6

Split 2000-page PDF into single-page PDFs (0.9MB)

Benchmark	Mean	p99	RME	Samples
libpdf	754.21ms	754.21ms	±0.0%	1
pdf-lib	1.37s	1.37s	±0.0%	1
@cantoo/pdf-lib	1.52s	1.52s	±0.0%	1

Copy 10 pages between documents

Benchmark	Mean	p99	RME	Samples
libpdf	4.63ms	5.42ms	±1.0%	109
pdf-lib	11.75ms	13.45ms	±1.6%	43
@cantoo/pdf-lib	13.22ms	14.53ms	±1.5%	38

Merge 2 x 100-page PDFs

Benchmark	Mean	p99	RME	Samples
libpdf	15.65ms	16.58ms	±1.2%	32
pdf-lib	54.44ms	63.00ms	±4.1%	10
@cantoo/pdf-lib	64.52ms	67.94ms	±3.6%	8

Fill FINTRAC form fields

Benchmark	Mean	p99	RME	Samples
libpdf	21.16ms	26.25ms	±3.4%	24
pdf-lib	29.13ms	34.62ms	±3.5%	18
@cantoo/pdf-lib	30.40ms	38.65ms	±5.0%	17

Fill and flatten FINTRAC form

Benchmark	Mean	p99	RME	Samples
libpdf	18.07ms	22.01ms	±3.0%	28
pdf-lib	FAILED	-	-	0
@cantoo/pdf-lib	33.36ms	40.49ms	±4.0%	16

Copying

Copy pages between documents

Benchmark	Mean	p99	RME	Samples
copy 1 page	1.15ms	2.20ms	±2.5%	436
copy 10 pages from 100-page PDF	4.81ms	8.85ms	±2.9%	105
copy all 100 pages	7.98ms	12.13ms	±2.0%	63

Duplicate pages within same document

Benchmark	Mean	p99	RME	Samples
duplicate page 0	1.04ms	1.53ms	±0.8%	482
duplicate all pages (double the document)	1.03ms	1.43ms	±0.7%	484

Merge PDFs

Benchmark	Mean	p99	RME	Samples
merge 2 small PDFs	1.62ms	2.18ms	±1.2%	309
merge 10 small PDFs	8.26ms	14.40ms	±2.7%	61
merge 2 x 100-page PDFs	15.10ms	19.84ms	±2.1%	34

Drawing

benchmarks/drawing.bench.ts

Benchmark	Mean	p99	RME	Samples
draw 100 rectangles	648μs	1.69ms	±2.9%	772
draw 100 circles	949μs	1.91ms	±1.6%	527
draw 100 lines	573μs	1.20ms	±1.2%	873
draw 100 text lines (standard font)	1.68ms	3.10ms	±2.1%	298
create 10 pages with mixed content	1.51ms	2.69ms	±2.2%	332

Forms

benchmarks/forms.bench.ts

Benchmark	Mean	p99	RME	Samples
get form fields	3.26ms	5.62ms	±3.1%	154
fill text fields	13.40ms	24.47ms	±6.4%	38
read field values	2.91ms	4.35ms	±1.6%	172
flatten form	8.14ms	10.19ms	±1.4%	62

Loading

benchmarks/loading.bench.ts

Benchmark	Mean	p99	RME	Samples
load small PDF (888B)	61μs	162μs	±0.9%	8230
load medium PDF (19KB)	92μs	167μs	±0.7%	5433
load form PDF (116KB)	1.29ms	2.55ms	±1.5%	389
load heavy PDF (9.9MB)	2.07ms	2.60ms	±0.8%	242

Saving

benchmarks/saving.bench.ts

Benchmark	Mean	p99	RME	Samples
save unmodified (19KB)	109μs	298μs	±1.1%	4605
save with modifications (19KB)	862μs	1.64ms	±1.9%	581
incremental save (19KB)	169μs	378μs	±1.2%	2957
save heavy PDF (9.9MB)	2.11ms	2.80ms	±1.1%	238
incremental save heavy PDF (9.9MB)	5.04ms	11.15ms	±6.1%	100

Splitting

Extract single page

Benchmark	Mean	p99	RME	Samples
extractPages (1 page from small PDF)	1.15ms	2.35ms	±2.7%	436
extractPages (1 page from 100-page PDF)	3.65ms	4.37ms	±1.3%	137
extractPages (1 page from 2000-page PDF)	56.65ms	63.86ms	±3.3%	10

Split into single-page PDFs

Benchmark	Mean	p99	RME	Samples
split 100-page PDF (0.1MB)	41.15ms	43.30ms	±1.7%	13
split 2000-page PDF (0.9MB)	733.30ms	733.30ms	±0.0%	1

Batch page extraction

Benchmark	Mean	p99	RME	Samples
extract first 10 pages from 2000-page PDF	56.88ms	57.99ms	±0.8%	9
extract first 100 pages from 2000-page PDF	60.90ms	62.57ms	±1.4%	9
extract every 10th page from 2000-page PDF (200 pages)	67.36ms	69.17ms	±1.8%	8

Environment

• Runner: Linux (X64)
• Runtime: Bun 1.3.14

Results are machine-dependent.