Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Avatar for Username

Prohledat stránky podpory

Vyhněte se podvodům. Za účelem poskytnutí podpory vás nikdy nežádáme, abyste zavolali nebo poslali SMS na nějaké telefonní číslo nebo abyste sdělili své osobní údaje. Jakékoliv podezřelé chování nám prosím nahlaste pomocí odkazu „Nahlásit zneužití“.

Zjistit více

Toto vlákno bylo archivováno. Pokud potřebujete pomoci, založte prosím nový dotaz.

webP image's save as .jpg extension

  • 1 odpověď
  • 1 má tento problém
  • 28 zobrazení
  • Poslední odpověď od cor-el

Tonigau
Tonigau
more options

When I get item from say Aliex, they have data on a seller page (drawing with detail etc...) https://www.aliexpress.com/item/32989866598.html I download image & it is saved with .Jpg extension (but file is webP format) If I 'inspect element' on image it shows as .jpg, If I 'View image info' it shows as webp (on original web page) Looks like it is webP image file with .jpg extension on their server. ?? (likely to discourage image use) I have IrfranView so no problem viewing/converting etc.. but I need to change extension to reflect the files real format.

Is there a setting in my FF (latest for win7p 64) that I can choose to apply extension of image format to saved file.

Most other image files I save have extension that reflect their format (.jpg, .gif )

thanks

Inspect element: "https://ae01.alicdn.com/kf/HTB1.5pjqrwrBKNjSZPcq6xpapXay.jpg" data-spm-anchor-id="a2g0o.detail.1000023.i0.4ef9766cIBR6FM" width="686" File: location https://ae01.alicdn.com/kf/HTB1.5pjqrwrBKNjSZPcq6xpapXay.jpg

corrected the formatting to remove a leading space which mucks up the readability

When I get item from say Aliex, they have data on a seller page (drawing with detail etc...) https://www.aliexpress.com/item/32989866598.html I download image & it is saved with .Jpg extension (but file is webP format) If I 'inspect element' on image it shows as .jpg, If I 'View image info' it shows as webp (on original web page) Looks like it is webP image file with .jpg extension on their server. ?? (likely to discourage image use) I have IrfranView so no problem viewing/converting etc.. but I need to change extension to reflect the files real format. Is there a setting in my FF (latest for win7p 64) that I can choose to apply extension of image format to saved file. Most other image files I save have extension that reflect their format (.jpg, .gif ) thanks Inspect element: "https://ae01.alicdn.com/kf/HTB1.5pjqrwrBKNjSZPcq6xpapXay.jpg" data-spm-anchor-id="a2g0o.detail.1000023.i0.4ef9766cIBR6FM" width="686" File: location https://ae01.alicdn.com/kf/HTB1.5pjqrwrBKNjSZPcq6xpapXay.jpg ''corrected the formatting to remove a leading space which mucks up the readability''
Přiložené obrázky

Upravil uživatel the-edmeister dne

Všechny odpovědi (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

It looks that the alicdn.com server does user agent sniffing and sends a JPG image with Firefox 64 or older and WebP for Firefox 65 and later that support WebP. It doesn't look at the image.http.accept header, so you get a blank image if you disable WebP. It is the same file name, but a different format and file size.

You can verify this with a useragent override via the about:config page in the Network Monitor Firefox 64 - JPEG:

Firefox 65 - WEBP:

Upravil uživatel cor-el dne