Bii o ṣe le Yi PDF pada si Aworan ni Laini pipaṣẹ Lainos

pdftoppm yi awọn oju-iwe iwe aṣẹ PDF pada si awọn ọna kika aworan bi PNG, ati awọn omiiran. O jẹ ọpa laini aṣẹ ti o le yipada gbogbo iwe PDF sinu awọn faili aworan lọtọ. Pẹlu pdftoppm, o le ṣalaye ipinnu aworan ti o fẹ julọ, iwọn, ati irugbin awọn aworan rẹ.

Lati lo ohun elo laini aṣẹ pdftoppm, o nilo lati kọkọ fi pdftoppm sii eyiti o jẹ apakan ti package poppler/poppler-utils/poppler-irinṣẹ. Fi package sii bi atẹle ti o da lori pinpin Lainos rẹ

$ sudo apt install poppler-utils     [On Debian/Ubuntu & Mint]
$ sudo dnf install poppler-utils     [On RHEL/CentOS & Fedora]
$ sudo zypper install poppler-tools  [On OpenSUSE]  
$ sudo pacman -S poppler             [On Arch Linux]

Ni isalẹ wa ni awọn apẹẹrẹ ti bi o ṣe le lo ohun elo pdftoppm lati yi awọn faili pdf rẹ pada si awọn aworan:

1. Yi iwe Iwe PDF pada si Aworan

Ilana fun yiyipada gbogbo pdf jẹ bi atẹle:

$ pdftoppm -<image_format> <pdf_filename> <image_name>
$ pdftoppm -<image_format> <pdf_filename> <image_name>

Ninu apẹẹrẹ ni isalẹ, orukọ iwe-aṣẹ mi ni Linux_For_Beginners.pdf ati pe a yoo yi pada si ọna kika PNG ati pe awọn aworan ni orukọ bi Linux_For_Beginners.

$ pdftoppm -png Linux_For_Beginners.pdf Linux_For_Beginners

Oju-iwe kọọkan ti PDF yoo yipada si PNG bi Linux_For_Beginners-1.png, Linux_For_Beginners-2.png, abbl.

2. Iyipada Ibiti ti Awọn oju-iwe PDF si Awọn aworan

Itọkasi fun ibiti o ṣe alaye ibiti o wa ni atẹle:

$ pdftoppm -<image_format> -f N -l N <pdf_filename> <image_name>
$ pdftoppm -<image_format> -f N -l N <pdf_filename> <image_name>

Nibo ni N ṣe afihan nọmba oju-iwe akọkọ lati tọju ati -l N fun oju-iwe ti o kẹhin lati yipada.

Ninu apẹẹrẹ ni isalẹ, a yoo yi awọn oju-iwe 10 si 15 pada lati Linux_For_Beginners.pdf si PNG.

$ pdftoppm -png -f 10 -l 15 Linux_For_Beginners.pdf Linux_For_Beginners

Ijade yoo jẹ awọn aworan ti a npè ni Linux_For_Beginners-10.png, Linux_For_Beginners-11.png, abbl.

3. Yiyipada Oju-iwe PDF akọkọ si Aworan

Lati yi oju-iwe akọkọ pada nikan lo sintasi ni isalẹ:

$ pdftoppm -png -f 1 -l 1 Linux_For_Beginners.pdf Linux_For_Beginners

4. Satunṣe Didara DPI si Iyipada

Pdftoppm yipada awọn oju-iwe PDF si awọn aworan pẹlu DPI ti 150 nipasẹ aiyipada. Lati ṣatunṣe, lo nọmba rx eyiti o ṣalaye ipinnu X, ati -ry nọmba ti o ṣe afihan ipinnu Y, ni DPI.

Ninu apẹẹrẹ yii, a ṣatunṣe didara DP ti Linux_For_Beginners.pdf si 300.

$ pdftoppm -png -rx 300 -ry 300 Linux_For_Beginners.pdf Linux_For_Beginners

Lati wo gbogbo awọn yiyan ti o wa ati atilẹyin ni pdftoppm, ṣiṣe awọn aṣẹ naa:

$ pdftoppm --help  
$ man pdftoppm

Ni ireti, o le yipada awọn oju-iwe PDF rẹ bayi si awọn aworan ni Lainos nipa lilo ọpa laini aṣẹ Pdftoppm.