PDF Redaction Tools Compared: Adobe Acrobat Pro, Smallpdf, iLovePDF and Orilami

Redacting a PDF has one job: the hidden words must be gone from the file, not just covered. Every tool in this comparison can do that. Where they differ is in where your document goes while it happens, how long it stays there, and how much of the finding work the tool does for you.

This page compares four common choices: Adobe Acrobat Pro (desktop software), Smallpdf and iLovePDF (online services), and Orilami's Sensitive Info Remover (runs in your browser). Facts about the other tools come from their own help and product pages, listed at the end, checked on 9 November 2026. Products change, so check those pages before you rely on a detail.

The short version

Why "where it runs" matters more than features

Every redaction job starts with the unredacted original, the version with the names, account numbers and ID numbers still in it. With an online service, that original is uploaded before anything is removed. Smallpdf says it deletes files one hour after processing and uses TLS encryption; iLovePDF says uploaded documents are deleted automatically after 2 hours. Those are reasonable policies, and both companies publish them. But for a short time the most sensitive version of your document sits on a server you do not control.

For many files that is fine. For a client file under legal privilege, a patient record, an HR investigation or a document covered by a contract that forbids third-party processing, it can be the one thing that rules a tool out. In those cases the question is not "how fast do they delete it" but "may it be sent at all".

Desktop software and a browser tool both avoid the upload. Acrobat does the work on your computer. Orilami does it inside your browser: the page loads the redaction engine, and your PDF is read from your disk into memory and never sent anywhere. You can check that yourself with your browser's Network tab, as our guide on verifying local execution shows.

Adobe Acrobat Pro

Acrobat Pro is the long-standing professional choice, and for good reason. Its Redact tool permanently removes the text and graphics you mark, and when you apply redactions it offers to sanitize the document and remove hidden information as well, saving the result as a new file. It handles complex PDFs, forms and large documents well, and many legal and government teams already have it.

The trade-offs are cost and effort. Redaction is a Pro feature, so it needs the paid subscription, and you decide what to mark, by hand or by searching the document. It also lives on one computer, which matters if you need to redact on a machine where you cannot install software.

Choose it if you already pay for Acrobat Pro, redact long or complex documents often, or need its wider PDF editing tools in the same app.

Smallpdf and iLovePDF

These two online suites make redaction quick: open the site, upload, mark the areas, download. No installation, and both have free tiers. Both publish clear deletion windows (one hour for Smallpdf, two hours for iLovePDF) and describe their security measures on their own pages.

The trade-off is the upload itself. The unredacted PDF travels to their servers and is processed there. If your organisation's rules, a client contract or data-protection law limit where personal data may be processed, an upload service needs to be approved first, and you should read their data-processing terms, not just the deletion window.

Choose one if the document is not especially sensitive, you redact only now and then, and convenience matters more than keeping the file on your device.

Orilami Sensitive Info Remover

The Sensitive Info Remover runs entirely in your browser, so the original never leaves your device. It also does the finding for you: it scans the text for card numbers (checked with the Luhn checksum, so random digit runs are not flagged), IBANs, national ID numbers, email addresses, phone numbers, IP addresses and passport machine-readable lines, and marks each match. You review every page, add or dismiss marks, and apply.

The result is a rebuilt PDF in which the removed text no longer exists. By default it stays searchable (only text that is still visible is written back) or you can export image-only pages. Scanned PDFs and photos are read with on-device text recognition. Each run also produces a free redaction log with SHA-256 fingerprints, useful when you need to show what was removed. Up to 20 files can go in one run.

Honest limits: text recognition reads clear print well and handwriting poorly, and a misread digit fails its checksum and is not flagged. That is why the tool makes you review each page before export. It is a focused redaction tool, not a full PDF editor like Acrobat.

Choose it if the document must not be uploaded, you want sensitive data found for you rather than hunted by hand, or you only redact occasionally and do not want a subscription. Preview is free; downloading the redacted file costs 60 tokens per document.

Whatever tool you use, check the result

A redaction is only as good as its check. After exporting, open the file and:

• try to select or search for a removed word (nothing should be found);
• copy all text from a redacted page and paste it into a plain text editor;
• look at the document properties: author, title and subject fields often still carry names. The Metadata Remover clears those, along with comments and hidden attachments.

For the technique itself, see how to permanently redact sensitive text from a PDF. And if the goal is to share a document with an AI assistant without the real names in it, the AI Document Anonymizer swaps names for placeholders you can put back later.

Sources

Checked on 9 November 2026:

• Adobe: Redact sensitive content in Acrobat Pro and Remove sensitive information
• Smallpdf: Redact PDF and Is Smallpdf safe?
• iLovePDF: Are my files safe using iLovePDF?

Product names are trademarks of their owners. Orilami is not affiliated with Adobe, Smallpdf or iLovePDF.