Bugs and Suggestions

Reddit is using webp more and more lately, so sometimes an image shared from Reddit gets posted as a "sticker" instead. It's very annoying.

I'd like to see Telegram treat images uniformly rather than this weird situation where webp images are considered stickers. The specific format of the the image isn't really relevant to the user viewing it.

Enrique Gómez Jul 29, 2022

Jonatã Bolzan Loss

Also, I see Telegram does not recognize if the metatag "og:image" of a link is in webp format. Twitter and Facebook have no problem with that.

same issue here... I can't understand how Telegram doesn't support webp, but other platforms do it (like Facebook, Twitter...)

maximum hedonism Aug 23, 2022

would be really really really nice to see a fix for the "every webp is a sticker" bug

Jonatã Bolzan Loss Nov 10, 2022

It seems that it's finally fixed...? :D

Joe Breuer Nov 10, 2022

As of when/which version(s)?
I got "wrongful stickers" as recent as last week. I don't know all the details, the sender was able to work around that by using "another of" drag&drop/copy&paste/screenshot/saving to a temporary file.

Art N. Nov 25, 2022

I upload webp animation but it shows as a still sticker. If it's a sticker then it should at least play it! (animation loads on Telegram Web but not on iPhone)

torocat Nov 27, 2022

Telegram for desktop recently added support for sending webp as compressed images https://github.com/telegramdesktop/tdesktop/commit/3467fe226ff0e640d4ed68d642a7e710c352562c

Сергѣй Юрьевичъ Соколовъ Jun 30, 2023

Several Telegram apps (such as Telegram for Android or Telegram Desktop) now support sending WebP as an image.

This is a big step forward towards implementing this suggestion. However, only to the extent of what is possible in the apps (on the client side). Nothing's changed on the server side:

➊ WebP images are still not possible on the server side. Hence every WebP has to be recompressed to JPEG if sent “as an image”. Almost every advantage of a newer format (WebP), such as its better quality-to-filesize ratio, is thus lost. (The only exception is perhaps the results of luma-weighed chroma subsampling performed by libsharpyuv, these are not lost.)

➋ WebP files are still treated as stickers if possible. Hence there is still no choice to send your WebP “as a sticker” or “as a file”. (Unless recompressed to JPEG, the WebP file will always become a sticker in Telegram if not larger than 2 megabytes and not larger than 6553600 pixels.)

➌ Telegraph (the site, not the Graph Messenger) still does not accept WebP uploads, reports an error (“Invalid file format”).

➍ AFAIK there's not much progress in WebP support elsewhere (in avatars, on Instant View pages, in preview areas under messages hyperlinked to external WebP files or to WebP-featuring web pages, in the results of external-URL-to-embed transformations on Telegraph pages, etc.).

Some of the necessary server-side changes might seem as simple as the whitelisting of the WebP format and of the “.webp” extension. (After all, one possible workaround for external-URL-to-embed transformations on Telegraph pages is to rename WebP files to “whatever.jpg” or “whatever.gif” because it apparently is sufficient to work around Telegram's blacklist of extensions. For example, try pasting the URL of https://take-me-to.space/WFHELqi.gif on a blank line and then hitting “Enter”.)

Some other necessary server-side changes are likely to require backwards-incompatible changes that introduce “images that are not JPEG” or “a flag to decide whether a file is a sticker”.

On the other hand, in addition to WebP, these changes will pave the road to support of even newer formats (AVIF images, JPEG XL stickers, etc.) in the future.

L D Sep 15, 2023

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