What's size limit (if any) on base64 encoded images?

[Fran]

Hi,
I would to know if there is a size limit on the images which I can
send in a doc by using base64 encoding.
In my app, I create an html doc with base64 encoded images.
Then, I create on google docs a new entry with mime type text/html,
but only sometimes (quite never) the images are displayed and I don't
know what the problem is.
So I was wondering if it could be an image size problem (also if I
don't think so).
Any ideas?
Thanks in advance,
Fran

[Fran]

I have done some tests.
I tried to low the quality of the image, but, still, only some images
are displayed.
Is there a limit on the length of the base64 string on GDocs?

[Ali Afshar]

Hi Fran,

You could host the images on a web server, and provide full URLs to
them in your HTML, then upload the document with convert. That should
fetch the images to save you embedding them.

Regards

--
Ali Afshar | @aliafshar | Google Developer Relations

[Fran]

Ali, thank you for the reply.
I can't host the images on a web server (different from GDocs) for
some reasons.
So I have two options:
- save the images on the GDocs account, trying to retrieve the urls
GDocs uses to store them and using these ones in the html doc (but, in
this way, both html doc uploading and downloading become very
complicated);
- use base64 encoding: now I'm trying this second option.
Regards,
Fran

[Vic Fryzel]

If anything, we follow the HTML specification here for the size of base64 embedded images in the HTML.

Have you considered using the Google Sites API?  That is setup to do everything you're trying to do here with a document.

-Vic

[Fran]

Vic, what html specification?
Unfortunately, I have to follow the customer's requests,
Regards,
Fran

[Fran]

Thanks to Vic, now I know the size limit on base64 encoded string
----
The images you embed in the HTML may not be more than 2MB in size nor
more than 2500x2500 pixels.

-Vic
----

I've done many tests: I can see image displaying (and not all images)
only if I use the lowest quality for a jpeg 320x460 image... about
4-8kb in size.
I don't know to what can be tied this problem.
Regards,
Fran

[Vic Fryzel]

I suspect your uploaded file size might be exceeding the overall maximum for a document.  What is the size of the HTML file you're sending?

-Vic

[Fran]

41 kb

[Fran]

The fact that some images appear when I use the lowest quality for
them, it suggests that actually it could be a problem of file size/
encoding length (as Vic suggested), but the files I'm trying to upload
are very small.
Moreover, in this way, not always images are displayed, also they are
about 4 or 8kb.
Now, I'm uploading images individually, but so I've many problems in
the importing stage.
Also if only for curiosity, I'd like to discover what could be the
problem.
Any suggestion is welcomed.
Fran