Otu esi ebuli na mpikota onu JPEG ma ọ bụ PNG na Linux Commandline
Ị nwere ọtụtụ ihe oyiyi, ma ịchọrọ ịkwalite na mpikota onu ihe oyiyi na-enweghị atụfu àgwà mbụ ya tupu ebugo ha na igwe ojii ma ọ bụ nchekwa mpaghara? Enwere ọtụtụ ngwa GUI dị nke ga-enyere gị aka ịkwalite onyonyo. Agbanyeghị, ebe a bụ ngwa ahịrị iwu abụọ dị mfe iji bulie onyonyo yana ha bụ:
- jpegoptim – bụ ihe eji ebuli/mpịachi faịlụ JPEG n’ebughị ogo.
- OptiPNG – bụ obere mmemme na-ebuli onyonyo PNG ka ọ dị obere n’ebughị ụzọ tụfuo ozi ọ bụla.
Iji ngwaọrụ abụọ a, ị nwere ike bulie otu onyonyo ma ọ bụ ọtụtụ n'otu oge.
Kwakọba ma ọ bụ welie onyonyo JPEG site na Line Command
jpegoptim bụ ngwá ọrụ ahịrị iwu nke enwere ike iji kwalite na mpikota onu faịlụ JPEG, JPG na JFIF na-enweghị atụfu ya n'ezie. Ngwá ọrụ a na-akwado njikarịcha na-enweghị atụ, nke dabere na ịkwalite tebụl Huffman.
Ka ịwụnye jpegoptim na sistemụ Linux gị, gbasoo iwu a site na ọdụ gị.
# apt-get install jpegoptim or $ sudo apt-get install jpegoptim
Na sistemụ RPM dị ka RHEL, CentOS, Fedora wdg, ịkwesịrị ịwụnye ma mee ka ebe nchekwa EPEL rụọ ọrụ ma ọ bụ ọzọ, ịnwere ike ịwụnye ebe nchekwa epel ozugbo site na iwu dị ka egosiri:
# yum install epel-release # dnf install epel-release [On Fedora 22+ versions]
Ọzọ wụnye mmemme jpegoptim site na ebe nchekwa dị ka egosiri:
# yum install jpegoptim # dnf install jpegoptim [On Fedora 22+ versions]
Okwu nke jpegoptm bụ:
$ jpegoptim filename.jpeg $ jpegoptim [options] filename.jpeg
Ka anyị kpakọba ihe onyonyo tecmint.jpeg na-esonụ, mana tupu imeziwanye onyonyo a, buru ụzọ chọpụta nha onyonyo a n'ezie site na iji du Command dị ka egosiri.
$ du -sh tecmint.jpeg 6.2M tecmint.jpeg
Ebe a n'ezie nha faịlụ bụ 6.2MB, ugbu a mpikota onu faịlụ a site na-agba ọsọ:
$ jpegoptim tecmint.jpeg
Mepee onyonyo abịakọrọ na ngwa nleba ihe onyonyo ọ bụla, ị gaghị ahụ nnukwu ọdịiche ọ bụla. Isi iyi na ihe oyiyi abịakọrọ ga-enwe otu àgwà ahụ.
Iwu a dị n'elu na-ebuli onyonyo a ka ọ bụrụ nha kacha nwee ike. Agbanyeghị, ị nwere ike ịpịkọta onyonyo enyere n'otu nha, mana ọ na-egbochi njikarịcha enweghị atụ.
Dịka ọmụmaatụ, ka anyị mpikota onu n'elu onyonyo site na 5.6MB ruo gburugburu 250k.
$ jpegoptim --size=250k tecmint.jpeg
Ị nwere ike ịjụ ka ị ga-esi mpikota ihe onyonyo na ndekọ ndekọ niile, nke ahụ esighịkwa ike. Gaa na ndekọ ebe ị nwere onyonyo.
[email ~ $ cd img/ [email ~/img $ ls -l total 65184 -rwxr----- 1 tecmint tecmint 6680532 Jan 19 12:21 DSC_0310.JPG -rwxr----- 1 tecmint tecmint 6846248 Jan 19 12:21 DSC_0311.JPG -rwxr----- 1 tecmint tecmint 7174430 Jan 19 12:21 DSC_0312.JPG -rwxr----- 1 tecmint tecmint 6514309 Jan 19 12:21 DSC_0313.JPG -rwxr----- 1 tecmint tecmint 6755589 Jan 19 12:21 DSC_0314.JPG -rwxr----- 1 tecmint tecmint 6789763 Jan 19 12:21 DSC_0315.JPG -rwxr----- 1 tecmint tecmint 6958387 Jan 19 12:21 DSC_0316.JPG -rwxr----- 1 tecmint tecmint 6463855 Jan 19 12:21 DSC_0317.JPG -rwxr----- 1 tecmint tecmint 6614855 Jan 19 12:21 DSC_0318.JPG -rwxr----- 1 tecmint tecmint 5931738 Jan 19 12:21 DSC_0319.JPG
Ma wee gbaa iwu na-esonụ ka ịpịkọta onyonyo niile n'otu oge.
[email ~/img $ jpegoptim *.JPG DSC_0310.JPG 6000x4000 24bit N Exif [OK] 6680532 --> 5987094 bytes (10.38%), optimized. DSC_0311.JPG 6000x4000 24bit N Exif [OK] 6846248 --> 6167842 bytes (9.91%), optimized. DSC_0312.JPG 6000x4000 24bit N Exif [OK] 7174430 --> 6536500 bytes (8.89%), optimized. DSC_0313.JPG 6000x4000 24bit N Exif [OK] 6514309 --> 5909840 bytes (9.28%), optimized. DSC_0314.JPG 6000x4000 24bit N Exif [OK] 6755589 --> 6144165 bytes (9.05%), optimized. DSC_0315.JPG 6000x4000 24bit N Exif [OK] 6789763 --> 6090645 bytes (10.30%), optimized. DSC_0316.JPG 6000x4000 24bit N Exif [OK] 6958387 --> 6354320 bytes (8.68%), optimized. DSC_0317.JPG 6000x4000 24bit N Exif [OK] 6463855 --> 5909298 bytes (8.58%), optimized. DSC_0318.JPG 6000x4000 24bit N Exif [OK] 6614855 --> 6016006 bytes (9.05%), optimized. DSC_0319.JPG 6000x4000 24bit N Exif [OK] 5931738 --> 5337023 bytes (10.03%), optimized.
Ị nwekwara ike ịpịkọta ọtụtụ onyonyo ahọpụtara n'otu oge:
$ jpegoptim DSC_0310.JPG DSC_0311.JPG DSC_0312.JPG DSC_0310.JPG 6000x4000 24bit N Exif [OK] 6680532 --> 5987094 bytes (10.38%), optimized. DSC_0311.JPG 6000x4000 24bit N Exif [OK] 6846248 --> 6167842 bytes (9.91%), optimized. DSC_0312.JPG 6000x4000 24bit N Exif [OK] 7174430 --> 6536500 bytes (8.89%), optimized.
Maka nkọwa ndị ọzọ gbasara ngwa jpegoptim, lelee ibe nwoke.
$ man jpegoptim
Kwakọba ma ọ bụ bulite onyonyo PNG site na Line Command
OptiPNG bụ ngwa ahịrị iwu eji ebuli na mpikota onu faịlụ PNG (eserese netwọkụ mkpanaka) na-atụfughị ogo mbụ ya.
Ntinye na ojiji nke OptiPNG yiri jpegoptim.
Iji wụnye OptiPNG na sistemụ Linux gị, gbasoo iwu a site na ọdụ gị.
# apt-get install optipng or $ sudo apt-get install optipng
# yum install optipng # dnf install optipng [On Fedora 22+ versions]
Mara: Ị ga-enwerịrị ike ịgbanye ebe nchekwa epel na sistemụ RHEL/CentOS gị iji wụnye mmemme optipng.
Okwu mkpokọta optipng bụ:
$ optipng filename.png $ optipng [options] filename.png
Ka anyị mpikota onu tecmint.png onyonyo, mana tupu ịmalite, buru ụzọ lelee nha onyonyo a n'ezie dịka egosiri:
[email ~/img $ ls -lh tecmint.png -rw------- 1 tecmint tecmint 350K Jan 19 12:54 tecmint.png
Ebe a n'ezie nha faịlụ nke onyonyo dị n'elu bụ 350K, tinyezie faịlụ a site na ịgba ọsọ:
[email ~/img $ optipng tecmint.png
OptiPNG 0.6.4: Advanced PNG optimizer.
Copyright (C) 2001-2010 Cosmin Truta.
** Processing: tecmint.png
1493x914 pixels, 4x8 bits/pixel, RGB+alpha
Reducing image to 3x8 bits/pixel, RGB
Input IDAT size = 357525 bytes
Input file size = 358098 bytes
Trying:
zc = 9 zm = 8 zs = 0 f = 0 IDAT size = 249211
Selecting parameters:
zc = 9 zm = 8 zs = 0 f = 0 IDAT size = 249211
Output IDAT size = 249211 bytes (108314 bytes decrease)
Output file size = 249268 bytes (108830 bytes = 30.39% decrease)
Dịka ị na-ahụ na mmepụta dị n'elu, ebelatala nha faịlụ tecmint.png ruo 30.39%. Ugbu a nyochaa nha faịlụ ahụ ọzọ site na iji:
[email ~/img $ ls -lh tecmint.png -rw-r--r-- 1 tecmint tecmint 244K Jan 19 12:56 tecmint.png
Mepee onyonyo abịakọrọ na ngwa onye na-ekiri ihe onyonyo ọ bụla, ị gaghị ahụ nnukwu ọdịiche dị n'etiti faịlụ izizi na abịakọrọ. Isi iyi na ihe oyiyi abịakọrọ ga-enwe otu àgwà ahụ.
Iji mpikota onu ogbe ma ọ bụ ọtụtụ ihe onyonyo PNG n'otu oge, gaa na ndekọ ebe onyonyo niile bi wee mee iwu na-esonụ ka ịpịkọta.
[email ~ $ cd img/
[email ~/img $ optipng *.png
OptiPNG 0.6.4: Advanced PNG optimizer.
Copyright (C) 2001-2010 Cosmin Truta.
** Processing: Debian-8.png
720x345 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 95151 bytes
Input file size = 95429 bytes
Trying:
zc = 9 zm = 8 zs = 0 f = 0 IDAT size = 81388
Selecting parameters:
zc = 9 zm = 8 zs = 0 f = 0 IDAT size = 81388
Output IDAT size = 81388 bytes (13763 bytes decrease)
Output file size = 81642 bytes (13787 bytes = 14.45% decrease)
** Processing: Fedora-22.png
720x345 pixels, 4x8 bits/pixel, RGB+alpha
Reducing image to 3x8 bits/pixel, RGB
Input IDAT size = 259678 bytes
Input file size = 260053 bytes
Trying:
zc = 9 zm = 8 zs = 0 f = 5 IDAT size = 222479
zc = 9 zm = 8 zs = 1 f = 5 IDAT size = 220311
zc = 1 zm = 8 zs = 2 f = 5 IDAT size = 216744
Selecting parameters:
zc = 1 zm = 8 zs = 2 f = 5 IDAT size = 216744
Output IDAT size = 216744 bytes (42934 bytes decrease)
Output file size = 217035 bytes (43018 bytes = 16.54% decrease)
....
Maka nkọwa ndị ọzọ gbasara ibe akwụkwọ optipng.
$ man optipng
Mmechi
Ọ bụrụ na ị bụ onye na-ahụ maka webụsaịtị ma chọọ ijere onyonyo kachasị mma na webụsaịtị gị ma ọ bụ blọọgụ, ngwaọrụ ndị a nwere ike ịdị oke aka. Ngwá ọrụ ndị a ọ bụghị nanị na-azọpụta ohere diski, kamakwa na-ebelata bandwit mgbe na-ebugote ihe oyiyi.
Ọ bụrụ na ị maara ụzọ ọ bụla ka mma iji nweta otu ihe, mee ka anyị mara site na nkwupụta ma echefula ịkesa akụkọ a na netwọk mmekọrịta gị ma kwado anyị.