⚖️ Compress PDF vs Flatten PDF
Both reduce PDF complexity, but in different ways. Compress reduces file size; Flatten locks form fields and layers.
Compress PDF
Try Compress PDF →Flatten PDF
Try Flatten PDF →| Feature | Compress PDF | Flatten PDF |
|---|---|---|
| Purpose | Reduce file size | Lock form fields & layers |
| Output Size | 60-80% smaller | Similar or slightly smaller |
| Editability | Still editable | Forms become static |
| Quality | Slight reduction possible | No quality change |
| Best For | Email attachments, uploads | Final document distribution |
| Security | No security change | Prevents form editing |
The Verdict
Use Compress PDF when you need slight reduction possible. Use Flatten PDF when you need no quality change. Both tools are free — try each to see which fits your workflow.