How can I mass-delete LINE media on Android while keeping message text?

Why “media-only” cleanup matters in 2026

LINE’s mass-delete LINE media on Android while keeping message text demand keeps rising because 4K video Stories, AI-generated stickers and auto-downloaded Voice messages can silently fill a mid-range phone in weeks. Unlike wiping the whole chat, removing only the binary files keeps the searchable transcript intact—critical for customer-support teams that must retain conversation logs for local tax or consumer-protection audits yet stay under 80 % device-storage warnings.

The platform offers three conceptually different cleanup planes: (1) in-app “Delete data” UI, (2) third-party housekeeping bots that call the BOT API, and (3) direct file-system surgery. Each plane leaves a different evidence trail, consumes unlike amounts of time, and carries its own risk of accidentally purging the text index. The rest of this guide walks you through a decision tree, step-by-step taps, and reproducible checks so you can defend the chosen method to an auditor or to your future self.

Decision tree: which route fits your retention policy?

Before you touch anything, answer two questions: Must the message text remain searchable inside LINE? and Do you need a verifiable media inventory for compliance? Your pair of answers lands you in one of four quadrants:

1. Quadrant A – High audit, High search: Use the built-in “Delete specific content → Media only” path and export a text CSV right after. This keeps the on-device SQLite reference, so search still works, and the CSV acts as a static fallback.
2. Quadrant B – High audit, Low search: Back up the whole chat to Google Drive, verify SHA-256, then run a third-party media cleaner bot that logs every file ID it removes. Text search will break for deleted media cards, but the Drive copy is legally intact.
3. Quadrant C – Low audit, High search: You only want space back but still like to scroll through old chats. The fastest is the in-app “Clear cache” button; it keeps thumbnails and text, but original images disappear. No external log needed.
4. Quadrant D – Low audit, Low search: Delete the entire chat. Not covered here because it violates the “keep message text” premise.

Empirical observation: on a 2025 mid-tier Android 14 device with 6 GB RAM, quadrant A added ~90 s to the monthly routine but saved 4.3 GB; quadrant C took 8 s but only freed 1.8 GB because thumbnails remained. Pick the smallest quadrant that still satisfies your auditor; extra logging beyond that rarely adds value.

Built-in method: “Delete specific content → Media only”

Prerequisites and version check

You need LINE v14.2 or newer (the stable channel as of February 2026). Open Settings → About LINE and confirm; if you are on an older minor release, tap Update in Google Play first—earlier builds lacked the granular “media only” toggle and would silently remove voice transcripts.

Step-by-step (Android)

1. Open the chat you want to clean.
2. Tap the top bar → Settings (gear icon) → Delete specific content.
3. Switch to the Media tab; you will see checkboxes for Photos, Videos, Voice, Stickers, Files.
4. Deselect Stickers if you want to keep paid animated ones (they are tiny anyway).
5. Tap All in the top-right corner, then uncheck any item you must retain for legal reasons.
6. Press the red Delete button → confirm. The UI shows “X files deleted” and returns you to the chat.
7. Immediately after, tap Settings → Export chat → Without media to generate a time-stamped .txt file. Store it in an encrypted folder; this is your audit trail.