> ## Documentation Index
> Fetch the complete documentation index at: https://docs.reloops.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported file types and extensions

> Reference the file extensions, MIME types, upload limits, and review behavior supported by Reloops.

Reloops is built for creative review files first. The web upload picker is configured for common image, video, PDF, audio, and text/data files. Larger uploads use the same Supabase `upload-b2` flow behind the scenes and can use multipart upload up to **5GB per file**.

## Quick reference

| Category      | Extensions                                              | MIME types                                                                                    | In-app behavior                                                                   |
| ------------- | ------------------------------------------------------- | --------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------- |
| Images        | `.jpg`, `.jpeg`, `.png`, `.gif`, `.webp`, `.svg`        | `image/jpeg`, `image/png`, `image/gif`, `image/webp`, `image/svg+xml`                         | Image review, annotations, comments, thumbnails, sharing, and compare mode        |
| Videos        | `.mp4`, `.mov`, `.qt`, `.m4v`, `.webm`, `.mkv`          | `video/mp4`, `video/quicktime`, `video/x-m4v`, `video/webm`, `video/x-matroska`               | Video review, playback, timecoded comments, thumbnails, sharing, and compare mode |
| PDFs          | `.pdf`                                                  | `application/pdf`                                                                             | PDF review, page preview, comments, sharing, and compare mode                     |
| Audio         | `.mp3`, `.m4a`, `.mp4`, `.wav`, `.flac`, `.aac`, `.ogg` | `audio/mpeg`, `audio/mp4`, `audio/wav`, `audio/x-wav`, `audio/flac`, `audio/aac`, `audio/ogg` | Stored as project assets with metadata, tags, sharing, and download               |
| Text and data | `.txt`, `.csv`, `.json`                                 | `text/plain`, `text/csv`, `application/json`                                                  | Stored as project assets with metadata, tags, sharing, search, and download       |

<Note>
  Browser file pickers use MIME types, so some extensions are accepted because the browser reports a supported MIME type. For example, `.jpg` and `.jpeg` both map to `image/jpeg`.
</Note>

## Upload limits

* The maximum file size is **5GB per file**.
* The web app automatically uses multipart upload for large files.
* Upload batches can include multiple files and folders.
* Folder upload preserves the folder structure inside the project.
* Empty files and files with missing names are skipped.

## Review support by type

Different file types get different review surfaces.

| Capability                  | Images | Videos | PDFs | Audio            | Text/data        |
| --------------------------- | ------ | ------ | ---- | ---------------- | ---------------- |
| Project asset card          | Yes    | Yes    | Yes  | Yes              | Yes              |
| Preview in review page      | Yes    | Yes    | Yes  | Limited          | Limited          |
| Comments                    | Yes    | Yes    | Yes  | Asset-level only | Asset-level only |
| Drawing or annotation tools | Yes    | No     | No   | No               | No               |
| Timecoded comments          | No     | Yes    | No   | No               | No               |
| Compare mode                | Yes    | Yes    | Yes  | No               | No               |
| Share links and downloads   | Yes    | Yes    | Yes  | Yes              | Yes              |

## Thumbnail and AI metadata behavior

Reloops generates the best preview it can for supported review formats.

* Images, videos, and PDFs can receive thumbnails.
* Very large files may finish uploading before thumbnail processing completes.
* Files without a dedicated preview can still be organized, tagged, shared, and downloaded.
* AI metadata is best supported for images, videos, audio, text, documents, and design-like formats.

## API and Supabase upload behavior

The web app uploads through the Supabase Edge Function `upload-b2`.

That upload API:

* requires a valid user session or API key,
* checks workspace access before signing or completing uploads,
* stores the file in object storage,
* records the provided `contentType` as the asset `mime_type`,
* enforces **5GB** as the multipart upload maximum.

The API does not maintain a separate extension allowlist. If you upload a file type outside the web picker through an API path, Reloops may store it as a generic downloadable asset, but preview, thumbnail, compare, and AI metadata support can be limited.

## Not supported for review or AI processing

These file types are not part of the supported web upload picker and are not processed by the AI metadata worker:

| Type                               | Extensions                                           |
| ---------------------------------- | ---------------------------------------------------- |
| Archives and compressed packages   | `.zip`, `.rar`, `.tar`, `.tgz`, `.gz`, `.bz2`, `.xz` |
| Installers and disk images         | `.dmg`, `.pkg`, `.iso`                               |
| Executables and compiled artifacts | `.exe`, `.dll`, `.jar`, `.class`, `.wasm`, `.bin`    |
| Fonts                              | `.ttf`, `.otf`, `.eot`, `.woff`, `.woff2`            |

<Tip>
  If a file uploads but does not show a rich preview, keep using the asset card for status, assignment, metadata, comments, sharing, and download.
</Tip>