Jump to content

Should PNG Images be Interlaced if they're going to be used on the web?


Recommended Posts

For PNG images, what if you are using them on the web, or if you have a slow internet connection? Should you use interlacing then? And what does it actually do? I think it loads a lower quality version of the image before replacing it with the proper one, but I'm not sure.

Original forum (now closed): 

 

Link to comment
Share on other sites

  • 1 month later...

Thank you for asking, Blushock. I also wanted to know.

 

What I get from the linked article is that interlacing makes the image load vaguely before filling in the details. A non-interlaced PNG will instead load from top to bottom. Usually, the image should not be interlaced (so keep the box in Paint.net unchecked).

 

Exceptions for when interlacing might be desired:

  • When the viewers have a very slow internet connection.
  • You'll be displaying many large images at once.
  • (My interpretation as someone mindful of the harm flickering images can do to light sensitive people who are on slow internet connections:) There's a strong need to reduce flickering.

More experienced designers, is there anything else we should be aware of?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...