Tools & Files
How the PDF Tools Work
Each PDFSimple tool follows the same upload-configure-download flow. Files are processed on isolated secure servers and deleted after the retention window.
PDFSimple's tools run on our servers, not in your browser. When you upload a file, it is transferred over TLS to an isolated processing worker that applies the requested operation, then makes the result available for download.
Processing pipeline
- Your file is uploaded over an encrypted HTTPS connection.
- The file is assigned to an isolated worker process — no other user's files share the same worker.
- The requested tool (compress, merge, split, etc.) is applied.
- The output is stored temporarily and a secure download link is generated.
- After the retention window, both the input and output files are permanently deleted.
Heavy operations run asynchronously
Some tools — such as large file compression or complex conversions — are queued as background jobs. The UI shows a progress indicator and notifies you when the result is ready. If you use the API, webhooks can notify your backend when a job completes.
Your files are never used to train machine-learning models. Processing is strictly limited to the operation you requested.
What counts as one task?
Each tool run counts as one task against your plan quota, regardless of how many pages the PDF has. Uploading ten files to Merge PDF counts as one task (one merge operation), not ten.
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