Heads-up
Posts with native image attachments tend to get more engagement than link previews on X. If reach is the goal, attach natively *and* keep the original on swiftimg as a backup.
Step by step
1. Upload to swiftimg
Drop the file at /upload — anonymous works — and copy the direct image URL or the /i/abc123 viewer URL.
2. Tweet the viewer URL for a card
Use the /i/abc123 share page URL. swiftimg emits Twitter Card meta on viewer pages, so X expands it into a `summary_large_image` card under your tweet.
Tweet Cool side project: https://swiftimg.com/i/abc1233. Embed in a longer thread
Posting the direct image URL inside a thread inlines a preview without using one of the four media slots, so you can stack more images per thread.
Twitter / X — FAQ
Why not just attach the image natively?
You should, when you can. swiftimg comes in handy when the file exceeds X's per-image cap, when you've already used four media slots, or when you want a permanent URL to reuse on other platforms.
Will the Twitter Card preview show on first post?
Yes, once Twitterbot fetches the URL. The fetch is fast (globally cached), and the OG metadata is on the viewer page from the moment of upload.
Does swiftimg support animated GIF / video?
Yes for animated GIF (auto-converted to animated WebP, original GIF still served) and short MP4/WebM. X may downgrade animated previews to a static thumbnail in some clients.
See also
Image hosting for Bluesky
Upload to swiftimg and link from a Bluesky post for an inline preview. Useful when you want a permanent URL or need to share more than four images.
Image hosting for Mastodon
Host images on swiftimg and link from a Mastodon toot. The URL renders as an OpenGraph card and stays live regardless of which instance you're on.
Image hosting for LinkedIn
Host images on swiftimg and embed them in LinkedIn articles via Markdown or as a link with an OG card. Permanent URL, globally cached, no expiry.
swiftimg vs Imgur
An Imgur alternative for fast image & GIF hosting with clean embeds and a real API.
Ready to host your Twitter / X images?
Start free, then unlock the full API, transforms, signed URLs, and a custom domain on the Developer plan.