Applies to: Web, iPhone/iPad, Android
Who can do this: Contributor
Letterloop accepts JPEG, PNG, WebP, GIF, AVIF, HEIC, and HEIF images. HEIC or HEIF photos from an iPhone may take extra time to process before all versions are ready.
Open your reply for the current Issue.
Find a question or section that accepts media and choose its photo or media control.
Select a supported image from the browser, photo library, or camera options shown by your device.
Allow Letterloop to upload and process the image; keep the composer open until it shows as ready.
Add a caption when that section provides one, then share the reply or submit your edits.
Some reply composers allow up to 10 media items. The controls and remaining slots shown on the current question or section are the source of truth. Letterloop does not publish one universal per-file size limit in this guide.
Use the remove control on the image, confirm when prompted, and select a replacement if needed. Wait for the replacement to finish processing before submitting. If the reply was already delivered, the live Issue can update but previously sent email and PDFs do not.
Give the browser or app permission to access the camera or photo library.
Use a reliable connection and keep Letterloop open during the upload.
Avoid attaching secrets or images that should not be seen by members or trusted share-link recipients.
If processing stalls, remove the item and retry once before contacting support.
