Most tools run in your browser — files stay on your device
Every PDF tool you need, in one place
Edit, convert, merge, compress, sign, protect and OCR PDFs. 69 professional tools — completely free, no sign-up, no watermarks.
Popular tools
The tools people use most.
Convert PDFs
To and from Word, Excel, PowerPoint and images — formatting preserved as far as each format allows.
Edit & annotate
A full editor, plus focused tools for common edits.
Security
Protect, redact and sign — with real encryption and true redaction.
Optimize
Smaller files, faster opening.
All tools
Everything, organised by task.
Organize
Edit & annotate
Convert from PDF
Convert to PDF
Security
Optimize
OCR & extraction
Why Nivo PDF?
Private by design
Most processing happens on your device. Server conversions use isolated, temporary storage and are deleted automatically.
Free, no strings
No account, no watermarks, no daily limits, no “premium” features. Supported by ads that never get in the way of your work.
Real results
True redaction, AES-256 encryption, verifiable digital signatures and conversions checked before you download them.
Honest about limits
Every tool tells you what it can and can't do — like when a PDF's text can't be edited in place.
Frequently asked questions
Is it really free?
Yes. Every tool is free to use, with no sign-up, no watermarks and no usage limits. The site is supported by advertising.
Are my files uploaded?
Most tools — including merge, split, compress, edit, sign, protect, redact, OCR and PDF to Word/Excel — run entirely in your browser, so your files never leave your device. A few conversions (Word/Excel/PowerPoint/RTF/HTML to PDF, PDF/A, PDF to SVG, repair and web optimisation) need server software; each of those tools says so clearly, and the files are deleted automatically within minutes — immediately after you download the result.
Can I edit the existing text in a PDF?
Often, yes. Click the text and type: the editor removes the original characters and redraws your text in the document's own font, size and colour (characters the embedded font lacks use a matching open font). Some PDFs encode text in ways that can't be edited in place; the editor detects this and tells you. Scanned PDFs contain images, not text — run OCR first.
Does redaction really remove the text?
Yes. Redaction deletes the underlying text from the file, not just covers it. Where content can't be removed exactly (for example text inside an image), the page is converted to an image with the area blacked out, so nothing remains.
What's the maximum file size?
Browser tools are limited only by your device's memory — hundreds of megabytes work on most computers. Server conversions accept up to 100 MB per operation.
How good are PDF to Word and PDF to Excel conversions?
Text, headings, fonts sizes, bold/italic, lists and tables are rebuilt so the result is editable. Complex layouts with multiple columns or text over images are approximated — every converter page lists its known limitations.