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Helmut Januschka, Lei Zhang2

Feb 3

JPEG XL support in PDF / PDFium?

Some of this sounds like questions for the PDF Association. Nobody has filed a feature request for

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JPEG XL support in PDF / PDFium?

Some of this sounds like questions for the PDF Association. Nobody has filed a feature request for

Feb 3

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

tan zhiyuan, … Lei Zhang5

12/1/25

Crash issue when using FPDFBookmark_GetDest and FPDFDest_GetDestPageIndex on Linux-musl-arm64 with version 144.0.7543.0

The default stack size in HarmonyOS is 8 MB, which is far larger than the memory consumed by eight

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Crash issue when using FPDFBookmark_GetDest and FPDFDest_GetDestPageIndex on Linux-musl-arm64 with version 144.0.7543.0

The default stack size in HarmonyOS is 8 MB, which is far larger than the memory consumed by eight

12/1/25

geisserml, Lei Zhang5

11/14/25

GN error when attempting to build on Windows 11 arm64 natively

Thanks for the info, I'll post any future questions about //build on chromium-dev then. On Friday

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GN error when attempting to build on Windows 11 arm64 natively

Thanks for the info, I'll post any future questions about //build on chromium-dev then. On Friday

11/14/25

M G, … geisserml21

10/31/25

Support Linux/ppc64le arch

> I'm calling /usr/bin/gn and /usr/bin/ninja directly, as the depot_tools "gn"

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Support Linux/ppc64le arch

> I'm calling /usr/bin/gn and /usr/bin/ninja directly, as the depot_tools "gn"

10/31/25

10/31/25

Highlight Annotation Colors Are Not Read by FPDFPageObj_GetFillColor or FPDFPageObj_GetStrokeColor

Hello all, I am working with PDF files that contain highlight annotations, and I noticed an issue

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Highlight Annotation Colors Are Not Read by FPDFPageObj_GetFillColor or FPDFPageObj_GetStrokeColor

Hello all, I am working with PDF files that contain highlight annotations, and I noticed an issue

10/31/25

Александр Рыбалов, Lei Zhang4

10/17/25

Build PDFium as static library on Linux, with use_custom_libcxx flag

is_component_build=false pdf_is_standalone=true pdf_is_complete_lib=true use_custom_libcxx=false

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Build PDFium as static library on Linux, with use_custom_libcxx flag

is_component_build=false pdf_is_standalone=true pdf_is_complete_lib=true use_custom_libcxx=false

10/17/25

Paulo Coutinho, … Lei Zhang5

10/15/25

Android 16 KB page size support

Hi, I made a tool to check APK, AAB and SO direct. It is free and open source: https://cavfy.com/

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Android 16 KB page size support

Hi, I made a tool to check APK, AAB and SO direct. It is free and open source: https://cavfy.com/

10/15/25

Loc Zhang (上杉夏香), Lei Zhang2

10/15/25

Is it possible to create Line and Watermark annotation into pdf?

Please add this as 2 separate feature requests on the bug tracker: https://crbug.com/pdfium/new, one

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Is it possible to create Line and Watermark annotation into pdf?

Please add this as 2 separate feature requests on the bug tracker: https://crbug.com/pdfium/new, one

10/15/25

Kuka, Lei Zhang2

10/15/25

Rendering speed and quality

Yes! On Sun, Sep 14, 2025 at 8:40 PM Kuka <tyck...@gmail.com> wrote: > > Has the

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Rendering speed and quality

Yes! On Sun, Sep 14, 2025 at 8:40 PM Kuka <tyck...@gmail.com> wrote: > > Has the

10/15/25

blem, … Lei Zhang4

10/15/25

unable to build pdfium

The OP references origin/chromium/3061 from early 2017. Is the build really for that PDFium branch,

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unable to build pdfium

The OP references origin/chromium/3061 from early 2017. Is the build really for that PDFium branch,

10/15/25

Enin Kaduk, Lei Zhang2

10/15/25

Adopt the possibility to view and write "ɔ" letters for African languages

Please report this issue on the bug tracker: https://crbug.com/pdfium/new On Wed, Oct 15, 2025 at 9:

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Adopt the possibility to view and write "ɔ" letters for African languages

Please report this issue on the bug tracker: https://crbug.com/pdfium/new On Wed, Oct 15, 2025 at 9:

10/15/25

Kuka, … K. Moon4

9/12/25

Is XFA form filling supported now?

1. This would be a question for the Chromium project, not the PDFium project. 2. This is completely

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Is XFA form filling supported now?

1. This would be a question for the Chromium project, not the PDFium project. 2. This is completely

9/12/25

Something Something, geisserml8

9/9/25

Is it possible to encode an image of the same content as a pdf page when encoded with FPDF_RenderPageBitmap?

Hi, sorry for the late response, I've taken your advice and they really do wonders in improving

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Is it possible to encode an image of the same content as a pdf page when encoded with FPDF_RenderPageBitmap?

Hi, sorry for the late response, I've taken your advice and they really do wonders in improving

9/9/25

Loc Zhang (上杉夏香)

9/4/25

Why can't I delete the annotations in the pdf file.

Here is my logic: 1.I use FPDFPage_GetAnnotCount to get count annotations of an page 2.traversal

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Why can't I delete the annotations in the pdf file.

Here is my logic: 1.I use FPDFPage_GetAnnotCount to get count annotations of an page 2.traversal

9/4/25

Loc Zhang (上杉夏香), Lei Zhang2

9/4/25

FPDF_SaveAsCopy with SaveFlagIncremental but the annotation I added don't work

See crbug.com/42270523 and https://pdfium-review.googlesource.com/135350. On Mon, Aug 25, 2025 at 9:

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FPDF_SaveAsCopy with SaveFlagIncremental but the annotation I added don't work

See crbug.com/42270523 and https://pdfium-review.googlesource.com/135350. On Mon, Aug 25, 2025 at 9:

9/4/25

Loc Zhang (上杉夏香)

9/4/25

If I add annotations into pdf, should I must set AP(appearance streams)?

for example, I add Square annotation 1.create annotation 2.set rect 3.set color 4.save file but I

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If I add annotations into pdf, should I must set AP(appearance streams)?

for example, I add Square annotation 1.create annotation 2.set rect 3.set color 4.save file but I

9/4/25

吴吴, Lei Zhang3

9/3/25

Very serious memory leak

Thanks for reporting the issue. I believe this is https://crbug.com/42270200. On Tue, Sep 2, 2025 at

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Very serious memory leak

Thanks for reporting the issue. I believe this is https://crbug.com/42270200. On Tue, Sep 2, 2025 at

9/3/25

Bojan Lovrovic, geisserml3

8/23/25

> These are not mentioned in your list though, so I'm guessing you are setting

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> These are not mentioned in your list though, so I'm guessing you are setting

8/23/25

8/15/25

Does bblanchon.PDFium.Linux, bblanchon.PDFium.macOs and bblanchon.PDFium.Win32 NuGet packages work

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Does bblanchon.PDFium.Linux, bblanchon.PDFium.macOs and bblanchon.PDFium.Win32 NuGet packages work

8/15/25

8/13/25

why FPDFImageObj_GetBitmap return null?

why FPDFImageObj_GetBitmap return null? it is FPDF_PAGEOBJ_IMAGE,when i use FPDFPageObj_GetType. i

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why FPDFImageObj_GetBitmap return null?

why FPDFImageObj_GetBitmap return null? it is FPDF_PAGEOBJ_IMAGE,when i use FPDFPageObj_GetType. i

8/13/25

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