PDF Redaction for Researchers
The journal portal caps submissions at 20 MB and your figure-rich manuscript is 45. If you work as one of the researchers, you have been there. Confileo's PDF Redaction tool permanently removes sensitive text and information from a PDF — free, in your browser, with your files deleted automatically the moment you are done.
Start Using PDF Redaction NowWhy Researchers use PDF Redaction
Day to day, researchers handle journal papers, datasets, grant proposals, survey results, literature reviews and conference posters — exactly the kind of files this tool is built for.
- Merging dozens of source papers into one annotated literature-review PDF.
- Compressing a figure-heavy manuscript to meet a journal submission limit.
- Extracting tables from PDFs into a spreadsheet for re-analysis.
- Redacting participant data before sharing a dataset publicly.
How to pdf redaction in 3 steps
- Upload the PDF with sensitive content.
- Mark the text or areas to redact.
- Download a PDF with that information permanently gone.
Built for the way researchers work
- ✓Accurate table extraction saves hours of manual data re-entry.
- ✓Participant data is processed then deleted for ethics compliance.
- ✓Free for grad students and labs on a tight grant.
PDF Redaction — Frequently asked questions
Is PDF Redaction free for researchers?
Yes. Accurate table extraction saves hours of manual data re-entry. There is no signup, no trial and no watermark on your files.
What kind of files can researchers use PDF Redaction for?
PDF Redaction works with the documents researchers handle every day — journal papers, datasets, grant proposals, survey results, literature reviews and conference posters. A common case: Merging dozens of source papers into one annotated literature-review PDF.
Is the redacted text truly removed?
Yes. Redaction removes the underlying content — not just a black box you can copy behind.
Can redacted information be recovered?
No. Once redacted and downloaded, the removed content cannot be retrieved from the file.
How do I permanently delete sensitive info from a PDF?
Mark the sensitive text or area, apply redaction, and download a file with that information fully removed — not just hidden.
What is the difference between redaction and a black box?
A black box can be removed or copied behind. Redaction here deletes the underlying data so no trace remains.
Can I use it to hide ID numbers or bank accounts?
Yes. Ideal for removing ID numbers, bank accounts and names before sharing contracts and official documents.
Does the rest of the document stay intact?
Yes. Only what you marked is removed; the rest of the content and formatting stays unchanged.