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Sep 14

Rendering speed and quality

Has the rendering speed and quality of the current version improved compared to the 2015 version?

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Rendering speed and quality

Has the rendering speed and quality of the current version improved compared to the 2015 version?

Sep 14

Kuka, … K. Moon4

Sep 12

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

Sep 12

Paulo Coutinho, … Benoit Blanchon3

Sep 10

Android 16 KB page size support

Can we configure the page size if we build without PartitionAlloc? Le vendredi 17 janvier 2025 à 19:

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Android 16 KB page size support

Can we configure the page size if we build without PartitionAlloc? Le vendredi 17 janvier 2025 à 19:

Sep 10

Something Something, geisserml8

Sep 9

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

Sep 9

Loc Zhang (上杉夏香)

Sep 4

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

Sep 4

Loc Zhang (上杉夏香), Lei Zhang2

Sep 4

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:

Sep 4

Loc Zhang (上杉夏香)

Sep 4

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

Sep 4

吴吴, Lei Zhang3

Sep 3

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

Sep 3

Bojan Lovrovic, geisserml3

Aug 23

> 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

Aug 23

Aug 15

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

Aug 15

Aug 13

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

Aug 13

Aug 6

FPDFPage_GenerateContent

In PDF files with more than 1000 pages, calls to the FPDFPage_GenerateContent() API take too long.

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FPDFPage_GenerateContent

In PDF files with more than 1000 pages, calls to the FPDFPage_GenerateContent() API take too long.

Aug 6

尼古拉特斯拉

Aug 5

Re: Type the translation. FPDFImageobj _ GetImageDataDecoded cannot get the image data embedded in the form correctly.

At present, it is found that the obtained pixel data is still an image in jfif format, which is not

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Re: Type the translation. FPDFImageobj _ GetImageDataDecoded cannot get the image data embedded in the form correctly.

At present, it is found that the obtained pixel data is still an image in jfif format, which is not

Aug 5

吴吴, geisserml4

Jul 25

Drawing large PDF pages is slow, inefficient, and fails

I'm not sure I understand correctly, but it sounds to me as though you don't just want to

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Drawing large PDF pages is slow, inefficient, and fails

I'm not sure I understand correctly, but it sounds to me as though you don't just want to

Jul 25

Kuka, geisserml2

Jul 24

Why PDFium chose the Anti-Grain Geometry Render Engine

I believe PDFium is actually moving away from AGG towards Skia. Using AGG might have been a decision

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Why PDFium chose the Anti-Grain Geometry Render Engine

I believe PDFium is actually moving away from AGG towards Skia. Using AGG might have been a decision

Jul 24

吴吴, geisserml3

Jul 24

Pdfium draws very large pages

See https://groups.google.com/g/pdfium/c/y-Ioecf5E3c/m/cM4fIzPMAgAJ for an answer on the duplicate

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Pdfium draws very large pages

See https://groups.google.com/g/pdfium/c/y-Ioecf5E3c/m/cM4fIzPMAgAJ for an answer on the duplicate

Jul 24

Jul 18

Creating a paragraph with a single text object when line wraps are known?

I'm looking for some guidance regarding text rendering in Pdfium. Is it possible to render an

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Creating a paragraph with a single text object when line wraps are known?

I'm looking for some guidance regarding text rendering in Pdfium. Is it possible to render an

Jul 18

Jul 11

Can' use FPDFAnnot_SetAttachmentPoints, return could not set attachment points

I want to use go-pdfium to get an underline/highlight etc annotation. But I got an error: could not

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Can' use FPDFAnnot_SetAttachmentPoints, return could not set attachment points

I want to use go-pdfium to get an underline/highlight etc annotation. But I got an error: could not

Jul 11

李寻欢, … 吴吴4

Jul 8

Handling ToUnicode Mapping Errors in PDF Text Editing (fpdf_edit_text.cpp) – Specifically for Missing CharCode of Space Character (Unicode 32) in Fully Embedded Microsoft YaHei Font, Seeking Official Recommended Solutions.

For example, I need to use this text "我爱中国" , This space character is invalid, pTextObj -

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Handling ToUnicode Mapping Errors in PDF Text Editing (fpdf_edit_text.cpp) – Specifically for Missing CharCode of Space Character (Unicode 32) in Fully Embedded Microsoft YaHei Font, Seeking Official Recommended Solutions.

For example, I need to use this text "我爱中国" , This space character is invalid, pTextObj -

Jul 8

Jun 23

FPDF_RenderPageSkia

I'm currently trying to render a PDF page using FPDF_RenderPageSkia directly to a GPU-backed

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FPDF_RenderPageSkia

I'm currently trying to render a PDF page using FPDF_RenderPageSkia directly to a GPU-backed

Jun 23

谢智, Lei Zhang3

Jun 19

PDFium enables Skia compilation and calls the interface 'FPDF_RenderPageSkia'.

I'm currently trying to render a PDF page using FPDF_RenderPageSkia directly to a GPU-backed

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PDFium enables Skia compilation and calls the interface 'FPDF_RenderPageSkia'.

I'm currently trying to render a PDF page using FPDF_RenderPageSkia directly to a GPU-backed

Jun 19

CHINNAMUNIA KARTHIK C, Lei Zhang2

Jun 13

Retrieve high-resolution images

It's hard to say without the PDF in question. Do other PDF implementations render the same PDF

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Retrieve high-resolution images

It's hard to say without the PDF in question. Do other PDF implementations render the same PDF

Jun 13

Daniel Hu, Lei Zhang2

Jun 4

FFI_SetCursor not triggered during FORM_OnMouseMove on /FT /Btn widgets — intended design or bug?

Based on a quick look, the FFI_SetCursor callback only gets triggered by actual mouse movements. My

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FFI_SetCursor not triggered during FORM_OnMouseMove on /FT /Btn widgets — intended design or bug?

Based on a quick look, the FFI_SetCursor callback only gets triggered by actual mouse movements. My

Jun 4

Kuka, Justin Pierce2

May 26

Problems with CJS_Document::getAnnots interface

I guess what you mean is that it returns an array of size N, where N is equal to the number of pages?

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Problems with CJS_Document::getAnnots interface

I guess what you mean is that it returns an array of size N, where N is equal to the number of pages?

May 26

吴吴, DJRecipe3

May 19

PDF file text position is messed up

This is something I battled with for a long time. There are some workarounds. Please see this bug

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PDF file text position is messed up

This is something I battled with for a long time. There are some workarounds. Please see this bug

May 19

CHINNAMUNIA KARTHIK C, Lei Zhang2

May 9

Image is not retrieved properly in the document

Please ask the owner for https://pdfviewer.github.io/ about this. The PDFium project does not

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Image is not retrieved properly in the document

Please ask the owner for https://pdfviewer.github.io/ about this. The PDFium project does not

May 9

Daniel Hu, … Justin Pierce3

May 9

Build failed starting from commit 9490e64a318197cea36b2516c7ee810a6001c1f6

For what it's worth, 9490e64a318197cea36b2516c7ee810a6001c1f6 seems to build fine on Winx64 in a

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Build failed starting from commit 9490e64a318197cea36b2516c7ee810a6001c1f6

For what it's worth, 9490e64a318197cea36b2516c7ee810a6001c1f6 seems to build fine on Winx64 in a

May 9

ods, … Lei Zhang3

May 8

Requesting help checking for issue in implementing freetext

I also fixed https://crbug.com/380434959 recently, so PDFium renders freetext annotations better. On

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Requesting help checking for issue in implementing freetext

I also fixed https://crbug.com/380434959 recently, so PDFium renders freetext annotations better. On

May 8

M G, … geisserml17

May 5

Support Linux/ppc64le arch

Late update: pypdfium2 now also comes with a native build script that should be portable across

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Support Linux/ppc64le arch

Late update: pypdfium2 now also comes with a native build script that should be portable across

May 5

Tor, Justin Pierce5

May 2

macOS PDFium builds: install_name_tool fails due to header padding

Please see rejection of proposal here: https://issues.chromium.org/issues/410996561 with detailed

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macOS PDFium builds: install_name_tool fails due to header padding

Please see rejection of proposal here: https://issues.chromium.org/issues/410996561 with detailed

May 2

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