Disclaimer

Last updated: 1 January 2025

This page explains what OmniPDF's tools can and cannot do. It is intended to set accurate expectations and prevent misuse. Please read it before relying on any tool for important work.

General disclaimer

The information and tools on OmniPDF are provided for general informational and utility purposes. While every effort has been made to build accurate, functional tools, we make no warranty as to their fitness for any particular purpose. Use them at your own risk.

What OmniPDF does not guarantee

• Perfect fidelity. No browser-based PDF tool preserves exact formatting through conversion. Text extraction, DOCX conversion, Excel tables and similar operations lose some or all formatting.
• Exact target sizes. Compression tools try to hit size targets but cannot guarantee them for all PDFs. The result is always honest about the achieved size.
• Full OCR accuracy. OCR depends on scan quality. Handwriting is unreliable. Small print may be misread.
• Full repair of corrupted files. The Repair PDF tool can fix some structural problems but not all corruption.
• Recovery of lost passwords. OmniPDF cannot recover forgotten passwords. Encryption is mathematically one-way.
• Watermark removal for every PDF. Watermarks baked into page content cannot be removed. Only annotation-layer watermarks can be cleaned.
• Legally binding digital signatures. OmniPDF's sign tool produces electronic signatures, not certified digital signatures with cryptographic verification. For high-value or regulated contracts, use a qualified signature service.
• Translation of PDF text. The translate tool is intentionally not implemented because translation requires sending text to an external server.

Legal disclaimers specific to tools

Protect PDF, Encrypt PDF, Change PDF Permissions

Encryption tools use AES via the pdf-lib-encrypt library. The security of the encrypted file depends entirely on the strength of the password you choose. If you forget the password, the file cannot be recovered. OmniPDF has no recovery mechanism and cannot bypass encryption.

Unlock PDF, Decrypt PDF

These tools remove a password from a PDF when you already know the password. They do not brute-force, guess or bypass unknown passwords. Use them only on PDFs you own or have explicit permission to modify.

Sign PDF

The signature produced by OmniPDF is an electronic signature image placed on the page. It is not a certified digital signature with a certificate authority, timestamp authority or cryptographic verification. Whether an electronic signature is legally binding depends on your jurisdiction and the nature of the document. For regulated agreements, use a qualified signature service.

Verify Digital Signature

This tool inspects the signature dictionary structure of a PDF. It does not perform full PKI chain validation, timestamp verification or cryptographic integrity checks. For authoritative verification, use Adobe Acrobat Pro, DocuSign or your national eID provider.

Redact PDF

Redaction in OmniPDF rasterizes the page after drawing the redaction box. The output PDF contains images of the pages with the redaction baked in. The underlying text behind the redaction is not present in the output. Keep the original PDF if you need it for compliance records.

OCR PDF, Make PDF Searchable, Image to Text

OCR accuracy depends on the quality of the source image. Clean 300 DPI scans of printed text in supported languages typically achieve 90%+ accuracy. Handwriting, stylised fonts, low-resolution photos and complex backgrounds achieve lower accuracy. Do not rely on OCR for legal, medical or financial decisions without manual verification.

PDF to Word, PDF to Excel, PDF to PowerPoint

These tools extract content and produce output files in the respective formats. Formatting, layout, fonts, colours and embedded media are not fully preserved. The output is intended as a starting point for editing, not as an exact replica of the source PDF.

Word to PDF, Excel to PDF, PowerPoint to PDF, HTML to PDF

These tools convert from other formats to PDF. Complex layouts, headers, footers, footnotes and custom fonts may not be preserved. For critical documents, use the source application's native PDF export.

Repair PDF

This tool attempts to repair damaged PDFs. It can fix some structural problems like broken cross-reference tables. It cannot recover truncated files, missing page objects or files with severe corruption. If the repair fails, the tool reports the failure and does not produce an output.

Translate PDF Text

This tool is not implemented. Translation requires sending text to an external translation service, which would break OmniPDF's privacy model. The tool page explains this honestly and suggests alternatives.

Content disclaimer

Articles and guides on the OmniPDF blog are written by the OmniPDF Product Team and reviewed before publishing. While we strive for accuracy, technical information changes rapidly. Always verify critical technical claims with primary sources. Where we describe third-party tools or services, we do so from publicly available information and are not responsible for changes those services may make.

Third-party links

OmniPDF may link to third-party websites. We do not control those sites and are not responsible for their content, privacy practices or accuracy.

No professional advice

Nothing on OmniPDF constitutes legal, medical, financial or professional advice. If you have questions about whether a specific PDF tool is legally sufficient for your situation, consult a qualified professional.

Limitation of liability

OmniPDF is not liable for any damages arising from the use of the tools or reliance on the information provided. See the Terms of Service for the full limitation of liability clause.