Feature: Custom filename (and title) for LinkedIn Images Carousel PDF

[The-infrastructure-io]

🔖 Feature description

Summary
When posting multiple images with settings.post_as_images_carousel = true, Postiz generates a PDF named slide.pdf. Please add a way to set the generated PDF filename (and optional document title) per post.

Current behavior

• Fixed filename: slide.pdf
• No way to override via Public API or UI

Expected behavior

• New setting to override filename, e.g. posts[n].settings.carousel_filename: "my-campaign.pdf"
• Optional: posts[n].settings.carousel_title for LinkedIn document title
• If omitted, default remains slide.pdf
• Auto-append/validate .pdf
• Works for LinkedIn Pages and Profiles
• Backward-compatible with existing requests/UI

🎤 Why is this feature needed ?

Use cases

• Branding consistency
• Campaign tracking/reporting
• Client deliverables requiring specific filenames

✌️ How do you aim to achieve this?

Steps to reproduce

• Post multiple JPGs with post_as_images_carousel = true → filename is slide.pdf

Environment

• Self-hosted (Coolify), Public API via n8n

Workaround

• Prebuild and upload a PDF with desired filename

🔄️ Additional Information

No response

👀 Have you spent some time to check if this feature request has been raised before?

• I checked and didn't find similar issue

Are you willing to submit PR?

None