DocuJ
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The free PDF editor that never uploads your files

Edit text, images, forms and scans, sign, redact and merge — every change happens on your device, not on a server.

or drop one or more PDF files here

Runs entirely in your browserNo uploads, no account

Free to use. No account or subscription required.

Using DocuJ at work — or building on it? Team licensing, private and self-hosted deployments, and embedding DocuJ in your own product.
Talk to us

Find and replace text

Replacement keeps each run’s embedded font. Runs whose subset font lacks the replacement characters are reported and left unchanged.

Crop or resize pages

Margins are in PDF points (72 points = 1 inch). Cropping hides content without deleting it.

Text watermark

Applying again replaces watermarks previously created by this editor on the target pages.
Draw your signature above.

Use {page}, {pages}, and {date} in any position.

LeftCenterRight
Header
Footer

Compress & optimize PDF

Optimization rebuilds the PDF’s structure and streams. Image compression additionally re-encodes photos and scans, which reduces image quality. Processing happens locally in your browser.

Current size

Optimization rewrites the PDF and will invalidate existing digital signatures.

Convert PDF pages to images

Each page is rendered locally with its visible annotations. Multiple pages are downloaded in a ZIP file.

Password protection

The protected copy will require this password when opened. Encryption happens locally in your browser.

Unlock encrypted PDF

The password and document stay on this device.

This PDF could not be opened

Technical details 
 
 
  
 
   
 
Contact DocuJ
 
For support, bug reports, licensing, or general questions, get in touch by email. DocuJ processes your files locally and never uploads them, so please do not attach confidential or sensitive documents.
 
contact@docuj.com
 
We use your email address and message only to respond to your request. Do not submit confidential documents. See our Privacy Policy for retention, recipients and your rights.
 
  
 
   
 
Legal disclaimer
 
 
DocuJ is provided "as is" and "as available", without warranty of any kind. To the maximum extent permitted by law, DocuJ disclaims all express, implied, and statutory warranties, including merchantability, fitness for a particular purpose, accuracy, non-infringement, and uninterrupted or error-free operation.
 
You are solely responsible for what you do with DocuJ and for the consequences of that use — including having the rights to process your documents, keeping backups, verifying every output before relying on it, and complying with all laws and obligations that apply to you.
 
DocuJ is a document-editing tool and does not provide legal, compliance, or other professional advice. Signatures, redactions, and edits may not satisfy every legal or organizational requirement; verifying that is your responsibility.
 
To the maximum extent permitted by law, DocuJ is not liable for any damages or loss of data arising from your use of the software. Nothing here excludes rights that cannot lawfully be excluded.
 
 
  
 
   
 
Terms of Use
 
 
By using DocuJ you agree to these Terms. DocuJ is a browser-based PDF editor; your documents are processed locally and are not uploaded to us.
 
DocuJ is currently free to use. We may add optional paid plans or features in the future; if we do, their price and terms will be shown before any purchase, and we intend to keep a free tier available.
 
You are solely responsible for your use of the Service and its results, including having the rights to process your documents, keeping backups, verifying output, and complying with the laws and obligations that apply to you. You may not use the Service unlawfully or to infringe others' rights.
 
DocuJ's own code, design, and branding remain ours; you keep all rights in your documents. Bundled open-source components are licensed under their own terms.
 
The Service is provided "as is" without warranties, and our liability is limited to the maximum extent permitted by law. We may update these Terms; continued use means you accept the changes. Questions: contact@docuj.com.
 
 
  
 
   
 
Privacy Policy
 
 
DocuJ processes your PDFs locally in your browser. The documents you open and edit are not uploaded to us — we never see or store their contents.
 
Some non-document resources are downloaded so the app can run, such as the application files and, for OCR, the language data for the language you choose. These never send us your document contents.
 
We use limited Cloudflare analytics to understand aggregate usage and improve DocuJ. Cloudflare Web Analytics measures page views and performance without cookies, persistent identifiers, or cross-site tracking. Where enabled, Zaraz records only feature-action names — never document contents, filenames, form contents, passwords, search terms, or other free text. We do not combine analytics with advertising data, create individual profiles, or send DocuJ events to advertising or marketing services.
 
We do not sell your data, show ads, or require an account. Preferences such as your language are kept in your browser's local storage and are not sent to us.
 
You can contact us at contact@docuj.com to access, correct, or delete any personal data we hold about you (such as emails you send us), or to object to its processing. We keep contact emails only as long as needed to handle your request. You also have the right to complain to the Spanish Data Protection Agency (AEPD).
 
If we add paid plans later, billing will be handled by a third-party processor and this Policy will be updated. Questions: contact@docuj.com.