Nine times out of ten, a failed conversion comes down to one of four things. Here's how to check each one before assuming something's broken.
Check the URL actually ends in .awebp
If you copied more than just the sticker link, extra text, a stray space, or part of the page address, the tool won't recognize it. Paste the URL into a blank tab first. If it doesn't load an image directly, you've copied the wrong thing.
Check if the link has expired
TikTok signs sticker URLs with a timestamp, usually valid for a few hours. If you dragged the sticker out a while ago and are only now getting around to converting it, that's most likely the issue. Go back to the DM, drag the sticker out again, and use the fresh URL right away.
Check your connection during conversion
The proxy has to fetch the file from TikTok's CDN before your browser can decode it. A dropped connection mid-fetch fails the same way any download would. Try again on a stable connection.
Check if TikTok changed something on their end
This happens rarely, but it happens. TikTok occasionally adjusts how their CDN signs or serves files, and a small independent tool like this one sometimes needs a day or two to catch up. If a conversion consistently fails and the first three checks came up clean, that's usually what's going on. Send a message through the contact form. Reports like that are genuinely the fastest way anything gets fixed.
What converting will never fix
If the sticker itself never loaded properly in your chat, a broken thumbnail or a placeholder icon, there's no file to convert. The tool only works with stickers that actually rendered correctly first.