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How the Unsplash integration works in Buffer
The integration is a composer feature. While you write a social post, you can search Unsplash’s library and select a photo to add to that post. Buffer describes its purpose as adding stock photos without switching tabs. Buffer’s listing for the integration does not describe a separate step for connecting an Unsplash account, so the search happens entirely inside the composer.
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Adding an Unsplash photo to a Buffer post
- In Buffer, click + New, then choose Post.
- Select the channel or channels you want the post to go to.
- Open the integrations button in the composer and choose Unsplash.
- Type a search term and review the results.
- Select a photo to add it to the post.
The selected photo becomes part of the draft, so it publishes or schedules with the rest of the post. Buffer’s description of the integration does not include a separate scheduling step for the photo itself.
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Buffer states that the Unsplash integration requires no account or setup and is available on all plans, including Free. Its integration listing, accessed October 7, 2026, describes the Unsplash library as containing over 3 million free photos. That figure is Buffer’s published description, not an independently checked live count of everything on Unsplash, and library size changes over time.
Image limits differ by social network
Buffer’s post media guidance shows that the number and type of images a post can carry depend on the destination network. Its table lists separate limits for Facebook, Instagram, X, LinkedIn, Pinterest, TikTok, Google Business, Mastodon, YouTube, Threads, and Bluesky. Those values can change, so confirm the current limits in Buffer before you schedule.
Two points matter when you use an Unsplash photo across several channels:
- A photo set that is valid for one network may exceed another network’s image count or type rules.
- When you customize a multi-channel post for each network, Buffer may apply each channel’s own limit to that version of the post.
If a channel will not accept a post with an Unsplash image, remove images or type restrictions for that channel and check its current limit in Buffer.
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Attribution and licensing for photos you insert
Unsplash’s attribution rules described below come from its API guidelines, and they apply to applications built on the API. Buffer’s documentation of the composer integration does not set a separate credit requirement for users who insert photos. Read Unsplash’s license terms directly before you rely on a photo for commercial work, and do not assume the developer rules describe every composer use.
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The composer is one route. Developers can also combine Buffer’s API with Unsplash’s API. These are separate integrations with different requirements.
Creating an image post through the Buffer API
Buffer’s API can create an image post by attaching an image asset that points to a publicly accessible image URL. Buffer’s example uses an Unsplash-hosted image URL. Buffer retrieves the media from that public link, so the file must remain reachable until the post publishes. The API does not provide a native file-upload endpoint for this workflow, so a local image has to be hosted at a public address first. This is a developer option and is separate from choosing a photo inside the composer.
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Unsplash API requirements for applications
Unsplash’s API documentation, accessed October 7, 2026, says that new applications start in demo mode, which is limited to 50 requests per hour. Production access requires applying and receiving approval. The limit applies to Unsplash’s API and says nothing about how many photos a Buffer user can add to a post.
Quick Recap
The main requirements for applications are:
- Hotlinking: display photos using the URLs returned in
photo.urls. - Insert event: when a user selects a photo for an action similar to a download, such as inserting it into a post, the application must call the photo’s
photo.links.download_locationendpoint. - Attribution: when displaying an API photo, credit Unsplash and the photographer, and link to the photographer’s profile. Links back to Unsplash must use the UTM parameters Unsplash specifies.
- Credentials: keep API keys confidential.
- Use: Unsplash intends its API for non-automated, high-quality experiences. Applications should present the content, photographers, and Unsplash positively, and spammy applications and data mining are not allowed.
Common problems and fixes
- The image is missing after publishing. The public image URL was probably removed, made private, or expired before Buffer fetched it. Keep the hosted file public until the post has published.
- A channel will not accept the post. The post likely exceeds that network’s image count or type limit. Check the current limit in Buffer and customize the post for that channel.
- A custom app stops making Unsplash requests. A new app in demo mode is capped at 50 requests per hour. Apply for production access if your use requires more.
- Credit is missing in a custom app. Add the Unsplash and photographer attribution, with the profile link and UTM parameters, wherever the photo is displayed.
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