How PDFem Handles Your Files

Last updated: June 1, 2026

Our File Handling Promise

PDFem is built for quick document work without an account. When you upload a file, we use it to complete the task you selected, return the output to you and remove the temporary files shortly after processing. The service is not designed as cloud storage, a document library or a place to keep personal files.

That simple model shapes the whole product. You do not need to sign in before using the tools. We do not ask for access to your email, drive or file library. We do not train models on uploaded files. We do not use file contents for advertising, profiling or analytics.

What Happens When You Upload a File

  1. Your browser sends the file to PDFem over HTTPS.
  2. The file is placed in a temporary processing folder on the server.
  3. The selected converter engine runs the job, such as merging pages, resizing an image, adding OCR or creating a ZIP archive.
  4. The finished file is made available through a temporary download link.
  5. Uploaded files and output files are removed automatically shortly after processing, generally around 10 minutes later.

The upload is tied to the tool you chose. A PDF uploaded to Merge PDF is used for that merge job. An image uploaded to Resize Image is used for that resize job. PDFem does not keep a personal file area where old uploads can be browsed later.

Where Files Are Stored

Files are stored temporarily on the PDFem server in private working folders. Those folders are used by the converter process and are not intended to be public web directories. Other visitors cannot browse your upload folder or see your files from the website.

Some tools create more than one temporary item. For example, PDF to JPG may create page images before packaging them for download. OCR may create intermediate files while it builds a searchable PDF. Those temporary items follow the same cleanup flow as the uploaded file and final output.

How Long Files Stay on the Server

Uploaded and converted files are automatically deleted shortly after processing, generally around 10 minutes after the job finishes. The short window exists so you have time to download the result and so the server can handle conversion files safely while the job is running.

Because cleanup is automatic, PDFem cannot recover an output later if you close the page, lose the link or wait too long. For important files, download the result and open it before leaving the page.

What Server Logs Contain

Like most websites, PDFem keeps basic technical logs so the service can stay available, secure and easier to troubleshoot. Logs may include the request time, IP address, browser user agent, requested URL, status code, file size, processing error type and similar operational details.

Logs are not a copy of your uploaded document. They do not contain the text of your PDF, the images inside your file or the content of converted output. They are used for abuse prevention, rate limiting, debugging failed conversions and understanding server health.

Analytics and Advertising Data

Analytics and advertising tools, when enabled and allowed by your consent choice, are used for site measurement and advertising related reporting. They can help us understand visits, page performance, tool popularity and similar website activity.

Those tools do not receive the content of your uploaded files from PDFem. They do not get your PDF pages, image pixels, OCR text, Word document text or converted output. File processing happens through the converter workflow, while analytics is limited to website usage signals.

If you choose Essential only in the cookie banner, optional analytics and advertising storage remain off. If you choose Accept all, those optional tools may run according to the Privacy Policy and Cookie Policy.

Converter Engines We Use

PDFem uses established document and image processing engines instead of inventing every converter from scratch. Different tools use different engines because each file task has different requirements.

  • pdf-lib: Used for many PDF structure tasks such as merge, split, rotate, page numbering, metadata editing, signatures and watermarks.
  • Sharp: Used for image resizing, compression and format conversion.
  • qpdf: Used for PDF structure work such as unlock, repair attempts, flattening support and web optimization.
  • Ghostscript: Used for heavier PDF output work such as compression, grayscale conversion, PDF/A output and some repair or flattening paths.
  • Poppler: Used for rendering PDF pages to images and extracting certain PDF contents.
  • LibreOffice: Used for office document conversion such as Word, Excel and PowerPoint formats.
  • OCRmyPDF and Tesseract: Used by OCR PDF to add a searchable text layer to scanned documents.
  • Puppeteer: Used by HTML to PDF to render HTML with a browser engine.

Using these engines lets each tool focus on the job it is meant to do. A scanned PDF needs a different approach from a JPG resize, and a Word document conversion is different from rotating PDF pages.

What Server Side Processing Means

Server side processing means your browser uploads the file, PDFem processes it on the server and then your browser downloads the result. This is different from a tool that does every step inside your browser only.

Server processing is useful for tasks that need specialist engines, larger memory use or formats browsers do not handle well on their own. It also makes the tools work more consistently across desktop and mobile browsers. The tradeoff is that the file must be uploaded for the job to run, which is why the short cleanup window and clear file handling rules matter.

What PDFem Does Not Do

  • PDFem does not keep a permanent library of uploaded files.
  • PDFem does not use uploaded file contents for ad targeting.
  • PDFem does not send file contents to analytics tools.
  • PDFem does not train machine learning models on uploaded files.
  • PDFem does not require an account before a conversion.

What You Should Check Before Sharing

Always open the result before sending it to someone else. File conversion is practical, but source files can be messy. Scanned pages may be tilted. OCR may misread a word. Redaction should be reviewed carefully. CSV output may need cleanup. Compression may affect image detail more than expected.

For sensitive documents, use the right tool for the job. Cropping is useful for page margins, but redaction is the safer choice for hiding private information. PDF Info can show document properties before sharing. Remove PDF Metadata can strip common metadata fields when the file should not carry internal titles or author names.

Questions

If you have a question about file handling, privacy or a specific conversion result, contact us at [email protected]. If you are handling regulated, confidential or high risk documents, check your own policy before using any online file processing service.