我们在 Shopware 6 商店中生成的发票在 Chrome、Firefox 和 Ubuntu 的 PDF 查看器中显示正常，但在 Acrobat Reader 中显示不正常。
file test.pdf
PDF document, version 1.7, 0 pages
PDF 应该有徽标和位置，但在 Acrobat 中它只显示一小部分：
如何调试？是否有工具可以进一步验证 PDF？
编辑：我跑了pdfchecker了https://www.datalogics.com/repair-pdf-files/- 我没有发现任何明显的错误？
那个部分
Uses fonts that do not allow text to be extracted:
SUBAAB+匀漀甀爀挀攀匀愀渀猀倀爀漀ⴀ刀攀最甀氀愀爀, SubType: Type0 (1 instance)
SUBAAC+匀漀甀爀挀攀匀愀渀猀倀爀漀ⴀ䈀漀氀搀, SubType: Type0 (1 instance)
看起来很奇怪，因为我们在文档中没有使用中文。此外，缺少的部分不仅是字体，还有徽标。
完整输出：
$ ./pdfchecker -i example.pdf -j CheckerProfiles/everything.json
PDF Checker 2.2.0 Copyright 2018-2021 Datalogics, Inc. All Rights Reserved
PDF Checker 2.2.0 Copyright 2018-2021 Datalogics, Inc. All Rights Reserved
Wed May 10 07:56:53 2023
JSON Profile: CheckerProfiles/everything.json
Input Document: example.pdf
Number of Pages: 1
Language: None
PDF Version: 1.7
Author:
Creation Date: 2023-May-05 09:04:03
Creator:
Keywords:
Modification Date: 2023-May-05 09:04:03
Producer: dompdf 1.0.3 + CPDF
Subject:
Title: Rechnungs-Nr. 41292
Trapped:
File Size: 38.3 KB
<<=CHECKER_SUMMARY_START=>>
general:born-digital
userdata:contains-transparency
fonts:found-non-extractible-text
cleanup:suboptimal-compression
images:color:resolution-too-low
images:grayscale:resolution-too-low
sizeInBytes:39219
canBeOptimized
<<=CHECKER_SUMMARY_END=>>
Optimization Assessment
Document can be optimized with PDF Optimizer - see details below
General Results
Errors:
None
Information:
Document was born digital. It was produced from PDF authoring software and so it may contain text, images, tables, forms, and other objects. These types of PDFs typically do not require OCR.
Checks Completed:
acroforms-type
born-digital
claims-pdfe-conformance
claims-pdfua-conformance
claims-pdfvt-conformance
claims-pdfx-conformance
contains-owner-password
contains-signature
damaged
does-not-conform-to-claimed-pdfa-type
image-only
password-protected
pdf-v2
tagged-pdf
unable-to-open
xfa-type
Userdata Results
Errors:
None
Information:
Contains transparency:
Total: (1 instance)
Checks Completed:
contains-annots
contains-annots-not-for-printing
contains-annots-not-for-viewing
contains-annots-without-normal-appearances
contains-embedded-files
contains-metadata
contains-optional-content
contains-private-data
contains-transparency
How To Optimize:
Transparency (which is not universally supported by PDF Viewers) can be flattened using PDF Optimizer. (1 instance)
Fonts Results
Errors:
None
Information:
Uses fonts that do not allow text to be extracted:
SUBAAB+匀漀甀爀挀攀匀愀渀猀倀爀漀ⴀ刀攀最甀氀愀爀, SubType: Type0 (1 instance)
SUBAAC+匀漀甀爀挀攀匀愀渀猀倀爀漀ⴀ䈀漀氀搀, SubType: Type0 (1 instance)
Checks Completed:
fontdescriptor-missing-capheight
fontdescriptor-missing-fields
found-non-extractible-text
uses-base14fonts-not-embedded
uses-fonts-fully-embedded
uses-fonts-not-embedded
Objects Results
Errors:
None
Information:
None
Checks Completed:
contains-javascript-actions
contains-thumbnails
Cleanup Results
Errors:
None
Information:
Contains conservatively compressed streams:
Uncompressed: (2 instances)
Checks Completed:
suboptimal-compression
Image Results
Errors:
None
Information:
None
Checks Completed:
alternate-images
Color Images
Errors:
None
Information:
Low resolution color image(s) present:
Total: (1 instance)
Checks Completed:
image-depth
resolution-too-high
resolution-too-low
uses-jpeg2000-compression
Grayscale Images
Errors:
None
Information:
Low resolution gray image(s) present:
Total: (1 instance)
Checks Completed:
resolution-too-high
resolution-too-low
uses-jpeg2000-compression
Monochrome Images
Errors:
None
Information:
None
Checks Completed:
resolution-too-high
resolution-too-low
uses-jbig2-compression
EDIT2：我们仍然无法生成 PDF 来共享。这是因为这种情况只发生在生产环境中。它甚至不会发生在临时环境中，临时环境只是同一服务器中的另一个 Web 根。
我的同事发现 source_sans_pro_normal.ufm.php 文件有所不同 - 我们尝试查明为什么会发生这种情况。
https://github.com/shopwareLabs/dompdf/tree/d33e0741155134ffd2bffffcc3fdec7c7b5a67ba/lib/fonts不包含这些.php文件 - 似乎是在此处生成。
答案1
我建议了 3 种工具，并且您使用了其中 1 种，这对该问题有所启发。
该工具的输出显示：
...
...
Color Images
Information:
Low resolution color image(s) present:
Grayscale Images
Information:
Low resolution gray image(s) present:
...
...
由于 DPI 分辨率低，Adobe 无法正确显示这些图像（常见的在线兼容问题！）。
解决方案 ：
（A）您应该在（1）生成原始图像时、（2）插入/嵌入文档时、（3）生成文档时增加 DPI 分辨率。
(B) 您应该查看有关 DPI 分辨率的 Web 视图和打印质量设置。
(C) 您也可以尝试从其他 2 个工具获取输出，这可能会对问题有更多的帮助。
答案2
vendor/shopwarelabs/dompdf我们通过从文件未损坏的系统复制到生产环境来“修复”这个问题。