Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Pesquisar no apoio

Evite burlas no apoio. Nunca iremos solicitar que telefone ou envie uma mensagem de texto para um número de telefone ou que partilhe informações pessoais. Por favor, reporte atividades suspeitas utilizando a opção "Reportar abuso".

Learn More

Esta discussão foi arquivada. Se precisar de ajuda, por favor, coloque uma nova questão.

webP image's save as .jpg extension

  • 1 resposta
  • 1 tem este problema
  • 28 visualizações
  • Última resposta por 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''
Capturas de ecrã anexadas

Modificado por the-edmeister a

Todas as respostas (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:

Modificado por cor-el a