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Jason Alexander, … geisserml5

Sep 1

Partial support for OCG (layers) added to PDFium

Thanks for pointing out what the policy is. The bit that AI code must be fully understood by the

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Partial support for OCG (layers) added to PDFium

Thanks for pointing out what the policy is. The bit that AI code must be fully understood by the

Sep 1

Miklos Vajna, Jeroen Bobbeldijk3

Sep 1

API to extract fill and stoke patterns

It sounds like this has some overlap with my proposal here: https://issues.chromium.org/issues/

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API to extract fill and stoke patterns

It sounds like this has some overlap with my proposal here: https://issues.chromium.org/issues/

Sep 1

Lei Zhang, geisserml6

Aug 21

Proposal to require Rust to build PDFium

Thanks for your feedback. Since it's been ~6 months without any objections, PDFium will probably

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Proposal to require Rust to build PDFium

Thanks for your feedback. Since it's been ~6 months without any objections, PDFium will probably

Aug 21

Jeroen Bobbeldijk, Lei Zhang5

Aug 20

Proposal: four rendering hot-path optimizations

Thanks Lei! The unsafe buffers docs helped a lot. I was able to make these changes in a way to would

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Proposal: four rendering hot-path optimizations

Thanks Lei! The unsafe buffers docs helped a lot. I was able to make these changes in a way to would

Aug 20

Amit Pathak, … geisserml18

Jul 31

[Proposal] Preserve TJ text arrays when regenerating PDF page content instead of flatting to Tj

Thanks again,It turned out to be two separate issues. First, I hadn't created a Gerrit account/

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[Proposal] Preserve TJ text arrays when regenerating PDF page content instead of flatting to Tj

Thanks again,It turned out to be two separate issues. First, I hadn't created a Gerrit account/

Jul 31

geisserml, Lei Zhang6

Jul 24

Downstream breakage from //build roll

Just found that GN's Readme itself offers some thoughts on the topic: https://gn.googlesource.com

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Downstream breakage from //build roll

Just found that GN's Readme itself offers some thoughts on the topic: https://gn.googlesource.com

Jul 24

CHINNAMUNIA KARTHIK C, … geisserml3

Jul 23

Performance issue while retrieving images from PDFium at higher zoom levels

This seems to me to be virtually the same as [1], oversized pages again. With a usual scale like 3,

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Performance issue while retrieving images from PDFium at higher zoom levels

This seems to me to be virtually the same as [1], oversized pages again. With a usual scale like 3,

Jul 23

CHINNAMUNIA KARTHIK C, … geisserml8

Jun 26

Performance issue occurs while opening the attached PDF document

Could you please provide the suggestion on this? On Thursday, 4 June 2026 at 14:26:14 UTC+5:30

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Performance issue occurs while opening the attached PDF document

Could you please provide the suggestion on this? On Thursday, 4 June 2026 at 14:26:14 UTC+5:30

Jun 26

Jun 15

Question About PDFium Rendering Pipeline and GPU Acceleration

Hello PDFium Team, I have been studying PDFium and am interested in understanding the architecture of

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Question About PDFium Rendering Pipeline and GPU Acceleration

Hello PDFium Team, I have been studying PDFium and am interested in understanding the architecture of

Jun 15

Aryan Krishnan, … geisserml9

Jun 8

Allowing Public Embedders to parse CPDF_Dictionaries

@thestig, following up - Thoughts on whether the new strategy helps or if there is a specific

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Allowing Public Embedders to parse CPDF_Dictionaries

@thestig, following up - Thoughts on whether the new strategy helps or if there is a specific

Jun 8

Bill Denney, geisserml2

May 22

API: 12 small writer additions to round out reader/writer > symmetry (R-bindings perspective)

Thank you for writing down this proposal and proposing CLs. Bookmark authoring API sounds

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API: 12 small writer additions to round out reader/writer > symmetry (R-bindings perspective)

Thank you for writing down this proposal and proposing CLs. Bookmark authoring API sounds

May 22

Bill Denney, Lei Zhang3

May 20

Missing public API: FPDFTextObj_SetFontSize (getter exists, setter doesn't)

Hi again :), I just created it here: https://pdfium-review.googlesource.com/c/pdfium/+/148170 I tried

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Missing public API: FPDFTextObj_SetFontSize (getter exists, setter doesn't)

Hi again :), I just created it here: https://pdfium-review.googlesource.com/c/pdfium/+/148170 I tried

May 20

Bill Denney, Lei Zhang2

May 15

[Feature] Expose Bezier control points via FPDFPathSegment_GetBezierControlPoints

Hi Bill, Thanks for bringing this up. This makes sense and sounds straightforward to implement, so

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[Feature] Expose Bezier control points via FPDFPathSegment_GetBezierControlPoints

Hi Bill, Thanks for bringing this up. This makes sense and sounds straightforward to implement, so

May 15

geisserml, Lei Zhang4

May 7

FPDF_NewXObjectFromPage() src_doc scope?

Thank you very much! On Thursday, May 7, 2026 at 7:16:41 AM UTC+2 Lei Zhang wrote: Uploaded https://

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FPDF_NewXObjectFromPage() src_doc scope?

Thank you very much! On Thursday, May 7, 2026 at 7:16:41 AM UTC+2 Lei Zhang wrote: Uploaded https://

May 7

Milan Hauth, Lei Zhang3

Apr 22

add trap sequences for emscripten

> Is anyone else building PDFium with Emscripten and running into this issue? there is https://

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add trap sequences for emscripten

> Is anyone else building PDFium with Emscripten and running into this issue? there is https://

Apr 22

金金丁, … Lei Zhang4

Apr 16

Request for Official CMake Build Support in PDFium

On Thu, Apr 16, 2026 at 5:34 AM geisserml <geis...@gmail.com> wrote: > > Thanks for the

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Request for Official CMake Build Support in PDFium

On Thu, Apr 16, 2026 at 5:34 AM geisserml <geis...@gmail.com> wrote: > > Thanks for the

Apr 16

M G, … geisserml29

Mar 24

Support Linux/ppc64le arch

I agree. FWIW I am mostly fine with GN, and we already provide ppc64le builds nowadays. It is

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Support Linux/ppc64le arch

I agree. FWIW I am mostly fine with GN, and we already provide ppc64le builds nowadays. It is

Mar 24

llewelyn LUO, Lei Zhang2

Mar 18

Issue: PDFium parsing failure on corrupted PDF (works in WPS)

Does Acrobat Reader and macOS Preview.app handle this PDF correctly? In general, if a PDF is

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Issue: PDFium parsing failure on corrupted PDF (works in WPS)

Does Acrobat Reader and macOS Preview.app handle this PDF correctly? In general, if a PDF is

Mar 18

Mar 6

Dear PDFium Team, I'm running into a PDF parsing failure with a ~10MB file that renders correctly

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Dear PDFium Team, I'm running into a PDF parsing failure with a ~10MB file that renders correctly

Mar 6

Helmut Januschka, Lei Zhang3

Feb 13

JPEG XL support in PDF / PDFium?

Thanks for filing https://crbug.com/482074621 for this. On Tue, Feb 3, 2026 at 12:04 PM Lei Zhang

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JPEG XL support in PDF / PDFium?

Thanks for filing https://crbug.com/482074621 for this. On Tue, Feb 3, 2026 at 12:04 PM Lei Zhang

Feb 13

Jorgen Christiansen, … Jorgen Christiansen4

Feb 2

ありがとう Jorgen Christiansen From: Takashi Kawasaki <espres...@gmail.com> Sent: Monday,

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ありがとう Jorgen Christiansen From: Takashi Kawasaki <espres...@gmail.com> Sent: Monday,

Feb 2

尼古拉特斯拉, Lei Zhang2

Jan 27

Subject: Request to Restore PDF Object Stream Compression Saving Functionality

On Tue, Jan 27, 2026 at 1:58 AM 尼古拉特斯拉 <20021...@gmail.com> wrote: > My Questions: >

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Subject: Request to Restore PDF Object Stream Compression Saving Functionality

On Tue, Jan 27, 2026 at 1:58 AM 尼古拉特斯拉 <20021...@gmail.com> wrote: > My Questions: >

Jan 27

Vincent Jantet, … geisserml3

Jan 22

Feature Request: Static Linking Support for bblanchon.PDFium.iOS (Unity Compatibility)

See eg https://github.com/bblanchon/pdfium-binaries/issues/36#issuecomment-800055227 On Wednesday,

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Feature Request: Static Linking Support for bblanchon.PDFium.iOS (Unity Compatibility)

See eg https://github.com/bblanchon/pdfium-binaries/issues/36#issuecomment-800055227 On Wednesday,

Jan 22

guust ysebie, Lei Zhang3

Jan 14

Timeline to support brotli compression?

Created: https://issues.chromium.org/issues/475855993#comment1 On Wednesday, 14 January 2026 at 18:44

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Timeline to support brotli compression?

Created: https://issues.chromium.org/issues/475855993#comment1 On Wednesday, 14 January 2026 at 18:44

Jan 14

Ann-Sofie, Lei Zhang4

Jan 14

FPDFAnnot_GetObject and FPDFPageObj_GetMatrix

Thanks for filing crbug.com/475719025. On Wed, Jan 14, 2026 at 1:20 AM 'Ann-Sofie' via pdfium

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FPDFAnnot_GetObject and FPDFPageObj_GetMatrix

Thanks for filing crbug.com/475719025. On Wed, Jan 14, 2026 at 1:20 AM 'Ann-Sofie' via pdfium

Jan 14

andy E, Lei Zhang2

Jan 12

multi-threaded render

No. On Mon, Jan 12, 2026 at 9:20 AM andy E <e2685...@gmail.com> wrote: > > Does the

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multi-threaded render

No. On Mon, Jan 12, 2026 at 9:20 AM andy E <e2685...@gmail.com> wrote: > > Does the

Jan 12

吴吴, Lei Zhang2

Jan 9

FPDF_RenderPageBitmapWithMatrix API

You can try with your workloads and see which works best for you. FWIW, PDFium is trying to switch to

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FPDF_RenderPageBitmapWithMatrix API

You can try with your workloads and see which works best for you. FWIW, PDFium is trying to switch to

Jan 9

尼古拉特斯拉, Lei Zhang2

Jan 6

Inquiry About PDFium Support for Portfolio (File Attachment) Functionality

Hi, Please take a look at FPDFDoc_GetAttachment(), FPDFAttachment_GetName() and

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Inquiry About PDFium Support for Portfolio (File Attachment) Functionality

Hi, Please take a look at FPDFDoc_GetAttachment(), FPDFAttachment_GetName() and

Jan 6

12/22/25

Is it possible to cross-compile with is_clang=false ?

As to the initial question, I can now say the answer is also yes (my colleague recently cross-

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Is it possible to cross-compile with is_clang=false ?

As to the initial question, I can now say the answer is also yes (my colleague recently cross-

12/22/25

John Paul Adrian Glaubitz, Lei Zhang11

12/2/25

[PATCH] core/fxcrt/numerics: Fix incorrect preprocessor check on aarch64

On Mon, 2025-12-01 at 13:26 -0800, Lei Zhang wrote: > On Mon, Dec 1, 2025 at 1:22 PM John Paul

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[PATCH] core/fxcrt/numerics: Fix incorrect preprocessor check on aarch64

On Mon, 2025-12-01 at 13:26 -0800, Lei Zhang wrote: > On Mon, Dec 1, 2025 at 1:22 PM John Paul

12/2/25

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