PDF too large for Slack, Jira, or Confluence? Fix it locally.

Jira's default attachment limit is 10 MB per file. Jira administrators can increase this in System Settings under File Attachments, but most organizations keep the 10 MB default. If you're getting an upload error, compress your PDF to under 8 MB to give yourself a safe margin.

Confluence has a 10 MB default limit, but administrators can lower it in Space Settings. Your Confluence instance might be configured to 5 MB or even 2 MB. Check with your Confluence admin. If the limit is confirmed as 10 MB, try compressing below 8 MB -- the error sometimes triggers slightly below the stated limit.

Slack's per-file limit is 1 GB since their 2024 update, which handles almost any PDF. If your PDF exceeds 1 GB (very rare -- typically hundreds of pages with uncompressed images), compress it with Diwadi first. More commonly, you'll want to compress large PDFs for faster loading and previewing in Slack channels.

For most work documents, no. Contracts with NDAs, client data, financial reports, and HR documents should not be uploaded to third-party servers. Online compressors process your PDF on their infrastructure, and you have no control over how long they store it or who has access. Use a desktop tool like Diwadi to keep work PDFs on your device.

Jira's default 10 MB limit means you need to reduce a 50 MB PDF by 80%. For scanned documents, this is usually achievable with maximum compression (reducing image DPI to 150). For text-heavy documents with diagrams, use balanced compression -- these typically compress 70-85%. If compression alone doesn't work, split the PDF into sections and attach them as separate files.

Notion's free plan limits file uploads to 5 MB per file. This affects PDFs, images, and all attachments. Upgrade to a paid plan to remove this limit, or compress your PDFs below 5 MB before uploading. Work PDFs with embedded images compress very well -- a 20 MB PDF often becomes under 2 MB.

Try compression first. If your PDF is a single continuous document (like a contract or report), compression keeps it as one file with page references intact. If compression alone can't get below 10 MB (common with design-heavy documents), split it by section. Confluence handles multiple attachments well and you can link between them.

Zendesk's 50 MB limit handles most work documents. If your file exceeds 50 MB, compress it first -- scanned documents and design exports often compress by 80-90%. For very large files that still won't compress enough, split into multiple attachments on the same ticket. Zendesk supports multiple file attachments per ticket.

Yes. PDF text is vector-based and is not affected by compression. Only embedded images (photos, scanned pages, diagrams) are compressed. With balanced compression, images remain clear at normal screen viewing size. Only maximum compression on heavily image-based PDFs introduces visible image quality reduction -- text always remains sharp.

Trello's free plan limits attachments to 10 MB per file. This is a hard limit and cannot be increased without upgrading to a paid plan. Compress your PDF below 8 MB to ensure it uploads successfully. Trello paid plans increase the limit to 250 MB, which handles almost any work document without compression.