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Images and GIFs

Add images and animated GIFs to your emails from the editor, any connected agent or the API, and turn video into GIFs

Nitrosend accepts PNG, JPEG, GIF and WebP images in emails. Upload one from an Image section in the email editor, and Nitrosend will host it for you. You can also use Use direct URL if the image is already hosted at a public link.

Uploads must be under 10 MB, no more than 4,000 pixels on either side, and no more than 16 million pixels in total. SVG files are not supported.

Animated GIFs

Animated GIFs work everywhere you build email in Nitrosend: in the editor, from any connected agent (Claude, ChatGPT, Codex, Cursor, Gemini and other MCP clients) and through the REST API. Nitrosend keeps every frame when it hosts the file, so the animation reaches the inbox intact, and most email apps play it.

Motion is one of the quickest ways to make an email feel high end. Think of a product turning in the light, a model walking toward the camera, or an oversized headline that animates in at the top of a newsletter. Most email apps, Gmail and Outlook included, don't play video, so a GIF is how you get that video-style motion into an email (see Video in email).

In the editor

Select an Image section and upload the GIF as you would any other image, or paste a public GIF link with Use direct URL.

With an agent

Ask your agent to add the GIF to your email. It saves the GIF to Nitrosend with nitro_ingest and places the hosted link in the email. Your agent can take the GIF from:

  • a public link to the GIF
  • a GIF you attach to the chat, for example in ChatGPT or Claude
  • a GIF file it already has, such as one it made itself
Ask your agent: "Using Nitrosend, add this GIF as the hero of my newsletter draft, link it to [URL] and send me a test."

Have your agent make the GIF

Agents that can run code and work with files, such as Claude Code, Codex and Cursor, can build the GIF themselves: an on-brand headline that animates in, a product that rotates, or a short loop cut from your own footage. If your agent can't create the file in your chat, make the GIF with any GIF maker, then attach it or share a link.

Ask your agent: "Using Nitrosend, design a newsletter including a hero, a portrait-shaped GIF, with an on-brand oversized animated headline inside the GIF. Send me a test before anything goes to my list."

Video in email

Most email apps, Gmail and Outlook included, don't play video, so Nitrosend doesn't accept MP4 or other video files. Turn a few seconds of the clip into a GIF instead and link it to the full video online. Readers get motion in the email itself and can watch the rest in one click.

Getting GIFs right

  • Make the first frame work on its own. Some email apps and settings, including older versions of Outlook for Windows, show only the first frame. Start on the finished headline or your strongest still, then let the animation play.
  • Keep files light. Aim for under 2 MB so the GIF loads quickly on phones. Fewer colors, fewer frames and a shorter loop all help.
  • Size for the layout. A portrait GIF around 600 by 750 pixels (4:5) fills a 600-pixel email and stays light. Full-width heroes can go up to about 1,200 pixels wide for sharp screens.
  • Add alt text that describes what the GIF shows, for readers whose images are hidden.
  • Send yourself a test before sending to your audience.
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