有没有办法用不同的颜色突出显示 PDF 文档中的多个单词的所有单词？

Question 1

最简单的方法是编写自定义字符串查找器，然后对其进行调整以突出显示字符串。

一个多类型文档可编程库是 MuPDF，它在 Windows 上有几个单独的 exe 来处理多种文档类型，尤其是 PDF。

因此，我们可以调用Mutool run find.js "filename.pdf" "string"并调整它，用颜色突出显示每个找到的字符串。假设我们将此页面的问题作为 PDF 进行搜索，以查找“单词”数量和位置。

....mupdf\1.19.1\mutool.exe" run "find.js" "question.pdf" 1 "word string"

结果注意使用版本 1.19.1作为最后一个在 32 位和 64 位 Windows 系统上使用此语法的人（在 1.20+ 中有一个重大变化。）

warning: undefined link destination
        Be aware these are from Top Left Top Down in default PDF units (normally 1/72")
Position 1:     x = 291.997314453125    y = 90.68339538574219   W = 40.930938720703128  H = 24.240676879882814
Position 2:     x = 437.68792724609377  y = 90.68339538574219   W = 40.930938720703128  H = 24.240676879882814
Position 3:     x = 188.70480346679688  y = 273.9330749511719   W = 19.30328369140625   H = 8.774993896484375
Position 4:     x = 333.4922180175781   y = 273.9330749511719   W = 19.303253173828126  H = 8.774993896484375
Position 5:     x = 271.1244812011719   y = 424.8809509277344   W = 19.70745849609375   H = 11.67144775390625
Position 6:     x = 349.66943359375     y = 437.03094482421877  W = 19.70745849609375   H = 11.67144775390625
Position 7:     x = 168.11524963378907  y = 449.85595703125     W = 21.2091064453125    H = 11.67144775390625
Position 8:     x = 243.36720275878907  y = 449.85595703125     W = 21.209121704101564  H = 11.67144775390625
Position 9:     x = 407.9195861816406   y = 464.9580993652344   W = 19.303314208984376  H = 8.774993896484375
warning: ... repeated 2 times...

这是第一部分“find.js”的概要。我仅将其设置为按单个页面查找，因为这样可以轻松地在循环中以不同的方式重复使用该函数。较新的版本，例如当前 1.23.0（内置 tesseract 的 Windows zip）可以在以下位置找到https://mupdf.com/releases/index.html

//BEWARE this script was for older Version 1.19.1 see below for more recent.
if (scriptArgs.length != 3) {
    print('usage: mutool run Find.js "input.pdf" page# "word string"');
    quit();
}
var doc = new Document(scriptArgs[0], "application/pdf");
// var numpages = doc.countPages() // Not Yet Implimented, but will be needed for whole file loop all pages
var page = doc.loadPage(scriptArgs[1] -1); // loads the #-1 page of the document NOTE PDF counts pages from 0
var transform = [1,0,0,1,0,0]; //use default for 1 page unit per point may need modify for /UserUnit

var arr = page.search(scriptArgs[2], 500); // max_hits – Integer Defaults to 500 unless otherwise specified search is case insensitive
    print('\tBe aware these are from Top Left Top Down in default PDF units \(normally 1/72\"\)');
var i;
for(i = 0; i < arr.length; i++)
{
    var p = arr[i];
    print('Position ' + (i + 1) + ':\tx = ' + p[0] +  '\ty = ' + p[1] + '\tW = ' + (p[2] - p[0]) +  '\tH = ' + (p[5] - p[1]) );
}

好的，但是 OP 需要像这样突出显示并且可以重复的颜色。

因此，我们只需要将 find.js 提升到 highlight.js，大约一天后这里就是运行概念，我们可以在for loop所需的任意数量的页面上运行。

"...mupdf\1.19.1\mutool.exe" run "highlights.js" "question.pdf" 1 "word" "output1.pdf" 1.0 0.0 1.0
"...mupdf\1.19.1\mutool.exe" run "highlights.js" "output1.pdf" 1 "color" "output2.pdf" 1.0 0.5 0.0

亮点.js

// THIS VERSION WORKS WITH MuTools 1.20.0 (LAST 32 bit or newer 64 bit) not the older version 1.19.1 syntax which is shown for legacy users.
if (scriptArgs.length != 7) {
    print('usage: mutool run Highlights.js "input.pdf" page# "word string" "output.pdf" R.# G.# B.# \(e.g. orange = 1.0 0.5 0.0\)');
    quit();
}
var doc = new Document(scriptArgs[0], "application/pdf");
// var numpages = doc.countPages() // Not Yet Implimented, but will be needed for whole file loop all pages
var page = doc.loadPage(scriptArgs[1] -1); // loads the #-1 page of the document NOTE PDF counts pages from 0
var transform = [1,0,0,1,0,0]; //use default for 1 page unit per point may need modify for /UserUnit

var arr = page.search(scriptArgs[2], 500); // max_hits – Integer Defaults to 500 unless otherwise specified search is case insensitive
    print('\tBe aware these are from Top Left Top Down in default PDF units \(normally 1/72\"\)');
var i;
for(i = 0; i < arr.length; i++)
{
    var p = arr[i];

        //Version 1.19.1
        //print('Position ' + (i + 1) + ':\tx = ' + p[0] +  '\ty = ' + p[1] + '\tW = ' + (p[2] - p[0]) +  '\tH = ' + (p[5] - p[1]) );

        //Version 1.20.0
        print('Position ' + (i + 1) + ': Quad=' + p[0])

        var annot = page.createAnnotation("Highlight");
        annot.setColor([scriptArgs[4], scriptArgs[5], scriptArgs[6]]);

        //Version 1.19.1
        //annot.setQuadPoints([[p[0],p[1],p[2],p[3],p[4],p[5],p[6],p[7]]]);  

        //Version 1.20.0
        annot.setQuadPoints(p);
}
page.update();

doc.save(scriptArgs[3], "pretty,ascii,compress-images,compress-fonts")

Answer