Pictures in doc-file: weight reduction by surgery
Once upon a time there was one translation in the world (as a process, and not as a result). It existed in the following way: slices were cut from pdfs with the original text, inserted directly into Word, and Russian text appeared from below through considerable mental effort, and, as a rule, a couple of other footnotes. And if in the original there were footnotes, then pictures also appeared in footnotes. The translation went, and the file grew - there were 51 images in the 16-page file, and Word began to work so slowly that the translation could not be the result.
For some reason, the built-in function of image compression did not help at all, so it was decided to perform an intervention surgically.
The file looks like this (narrow columns are not text, but pictures):
You can also get into the doc-file inside, but it is much easier to do this in .docx. Re-save. We see that re-saving by itself has yielded nothing - both the file weighed 12 megabytes and weighs.
As you know, the .docx file is a zip-archive with a special internal structure - therefore, without any difficulty looking into his guts, and there ...
in the unpacked form, the
Of course, the main culprit is the images, each of which takes about ten megabytes:
')
I wonder why obviously raster images Word stores in EMF - vector format? Probably, there is some deep explanation that will involve the argument about the PDF source (“after all, PDF is also a vector format!”), But right now we don’t care. In order not to be confused by editing the document.xml file when changing the format of the figures, we will limit ourselves only to reducing their size. Fortunately, IrfanView among all other useful functions can write EMF (Photoshop, for example, does not know how out of the box). And he can also reduce the image packs - this function we use. 800 pixels on the long side is enough.
(in the picture above, on the right, a fragment of the letter g is visible - and this is also the original version, which is reduced in width to the screen)
After that, you can pack back the modified files - they will weigh significantly less (15 times):
.
Word calmly ate this file. True, when you save it back to .doc, it is somewhat stouter, but still not so much:
Total : the file is compressed 6.5 times without reducing the visible quality (the file is not intended for printing, but even in this case it would look good), the translation process went much faster (and with a smaller number of expletives), and at home it became somewhat calmer that, no doubt, is a major achievement.
UPD:
Discussion in the comments, for what reason, Word inserts images in the EMF
For some reason, the built-in function of image compression did not help at all, so it was decided to perform an intervention surgically.
The file looks like this (narrow columns are not text, but pictures):
You can also get into the doc-file inside, but it is much easier to do this in .docx. Re-save. We see that re-saving by itself has yielded nothing - both the file weighed 12 megabytes and weighs.
As you know, the .docx file is a zip-archive with a special internal structure - therefore, without any difficulty looking into his guts, and there ...
in the unpacked form, the
word directory would weigh almost seven hundred megabytes ! No wonder Word refuses to work ...Of course, the main culprit is the images, each of which takes about ten megabytes:
')
I wonder why obviously raster images Word stores in EMF - vector format? Probably, there is some deep explanation that will involve the argument about the PDF source (“after all, PDF is also a vector format!”), But right now we don’t care. In order not to be confused by editing the document.xml file when changing the format of the figures, we will limit ourselves only to reducing their size. Fortunately, IrfanView among all other useful functions can write EMF (Photoshop, for example, does not know how out of the box). And he can also reduce the image packs - this function we use. 800 pixels on the long side is enough.
(in the picture above, on the right, a fragment of the letter g is visible - and this is also the original version, which is reduced in width to the screen)
After that, you can pack back the modified files - they will weigh significantly less (15 times):
.Word calmly ate this file. True, when you save it back to .doc, it is somewhat stouter, but still not so much:
Total : the file is compressed 6.5 times without reducing the visible quality (the file is not intended for printing, but even in this case it would look good), the translation process went much faster (and with a smaller number of expletives), and at home it became somewhat calmer that, no doubt, is a major achievement.
UPD:
Discussion in the comments, for what reason, Word inserts images in the EMF
Source: https://habr.com/ru/post/164683/
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