Obsidian Sync Failed? Fix PDF File Size Error Now

Obsidian Sync failing or your CPU spiking after adding a PDF? Compress your PDF instantly using the tool below — fixes both Standard (5MB) and Plus (200MB) sync errors.

File Size Limits (Quick Fix)

👉 Fix: Compress your file below the required limit using the tool above.

📄
Drop your PDF here
or click to upload — PDF only
Target size (optional)
or leave blank to compress as much as possible

How to use this tool

About this tool

Obsidian Sync failures caused by oversized files often show no clear error — the sync simply stalls or retries in a loop, causing high CPU usage. Compressing the PDF below your plan's limit stops the retry loop. For files that can't be compressed enough, remove them from the vault and store them in iCloud or Dropbox instead.

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💡 Good to know

❓ Frequently Asked Questions

Why is Obsidian Sync failing after I added a PDF?+

If the PDF exceeds your plan's limit (5MB on Standard, 200MB on Plus), Obsidian Sync will fail silently or retry in a loop. Compress the PDF below the limit or remove it from the vault and store it externally.Source: Obsidian Help

Why is Obsidian causing high CPU usage after syncing?+

A file exceeding the Obsidian Sync size limit can cause the sync client to retry the upload continuously, spiking CPU usage. Compress the oversized file or move it out of the synced vault folder.Source: Obsidian Help

How do I fix Obsidian Sync failing on a PDF?+

Compress your PDF below 5MB (Standard) or 200MB (Plus) using the tool above. If the file can't be compressed enough, remove it from the vault and link to it from iCloud Drive or Dropbox instead.Source: Obsidian Help

Does Obsidian Sync show an error when a file is too large?+

Not always. Oversized files often cause silent failures or continuous retry loops rather than a clear error message. High CPU usage after adding a large file is a common symptom.Source: Obsidian Help

Can I store large PDFs outside my Obsidian vault?+

Yes. Store the PDF in iCloud Drive, Dropbox, or another cloud service and paste the file link into your Obsidian note. This keeps your vault lightweight and avoids Sync size limits entirely.Source: Obsidian Help

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