What to check before sending a file
First, check whether Discord explicitly says the file is too large. Use the table below to narrow down the problem, following the next step for your result. Stop once your intended file appears in a sent message.
Checklist for when Discord file uploads fail
Check file size, format, network conditions, permissions, and server workflow before sending PDFs or creative assets through Discord.
| Symptom | Check | Action | Next step |
|---|---|---|---|
| 1a. Upload fails | Does the error say the file is too large? | For a non-video file with that error, use the Discord file size guide. | Size error: follow that guide, or row 1b for video. No size error: row 2. |
| 1b. Video exceeds the size limit | Confirm the size error applies to the video. | Use the Compress or share a video. | Continue with that guide. If there is no size error, use row 2. |
| 2. File seems missing or has no preview | Is it attached to a sent message, rather than still in the message composer? | PDFs and DOCs can appear as attachments without a content preview. This is Discord's display behavior, described in its File Attachments FAQ; a missing preview alone does not mean an upload failed or the format is unsupported. | Attachment sent: stop. File not sent: row 3. |
| 3. File was not sent | Try a small, different file in the same destination on the same connection. | Use a small image or text file you can open on your device. | Test sends: row 4. Test also fails: row 5. |
| 4. Only the original file fails | Check whether the original opens on your device. | The problem may be specific to that file. If it cannot open, obtain or export a working copy, then retry the upload. Do not judge support by the extension alone. | Original sends: stop. Still fails: record this result and use the support guidance below. |
| 5. Small test file also fails | Switch connections, such as from Wi-Fi to mobile data. Retry the same test file in the same destination. | If the test sends, the original connection may be involved. Send your intended file using the working connection. | Intended file sends: stop. Only that file fails: row 4. Test still fails: row 6. |
| 6. Test fails on both connections | In a server channel, check whether you have Attach Files permission there. | If permission is missing or unclear, ask a server administrator to check it, then retry once allowed. See channel permissions guide. | File sends: stop. Permission is allowed but sending still fails: support guidance below. For a DM, skip this server permission check and use that guidance. |
Still unable to send? Record the exact error text, or note that no error appeared. Include your device and OS, the Discord app version, and the checks you tried with their results. Save a screenshot if it helps show the problem; Discord's client information guide explains where to find your version and device details.
If you suspect a Discord problem, contact Discord Support with those notes. Its bug-reporting guide explains how to describe the steps and results.
PDFs and creative assets need a place people can revisit
PDFs, design files, video assets, and recorded audio get buried quickly when they are only dropped into chat. A stable server-level sharing location reduces repeated resend requests.
Move recurring sharing into a server workflow
DisCoRibute adds a file-sharing place to your Discord server through a bot. Check the upload flow, then expand through storage plans when the workflow fits your community.
DisCoRibute Bot
Share large files as-is with DisCoRibute
Add the Bot to your Discord server and send videos, ZIPs, and production assets through member-only share pages.
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- Share upload links back into your channels
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Related Discord file sharing guides
Discord file sharing What iPhone users should check when Discord image uploads fail Troubleshoot Discord image uploads on iPhone: check photo access, failed sends, or missing images, then follow the steps for your symptom. Discord file sharing How to share Discord videos so members can play and revisit them Check whether recipients can play your shared Discord videos, then use clear filenames, searchable messages, and current links to find and reuse them later. Discord file sharing Discord Video Too Large to Send? Compress It or Share a Link Video too large for Discord? Check your upload limit, compress and attach a smaller copy, or send an original-quality link and confirm recipient access. PILLAR Guide to sharing large files on Discord Find a file sharing workflow for your server before you run into file size limits or trouble sharing videos and PDFs.