Our Add Comments to PDF tool helps you add comments, notes, and annotations to PDF files instantly. Collaborate on documents with text comments and feedback. Perfect for reviews, feedback, and collaboration. Batch processing supported. Works securely on our servers - fast, reliable, no registration required.
Add text comments, notes, and annotations to PDF files. Specify page number, comment text, author name, and optional coordinates for precise positioning.
📄
Batch Processing
Add comments to multiple PDF files at once. The same comments are applied to all PDFs in the batch, making it perfect for adding standard feedback or annotations to multiple documents.
🔒
Secure Processing
All processing happens on secure servers. Your files are processed and immediately deleted after adding comments. We never store your PDFs or share them with third parties.
Add Comments to PDF Files
Upload PDF files and add comments, notes, and annotations
What is Add Comments to PDF?
Add Comments to PDF is the process of adding text comments, notes, and annotations to PDF files. Comments can be positioned on specific pages with custom text, author names, and optional X/Y coordinates for precise placement. This is essential for collaboration, feedback, reviews, document annotation, and team communication.
According to MDN Web Docs, the FileReader API enables reading PDF files in the browser. Our Add Comments to PDF tool uses pdf-lib, a powerful JavaScript library for PDF manipulation. The pdf-lib library provides comprehensive PDF processing capabilities that can add text overlays, annotations, and comments to PDF documents.
Adding comments to PDF is essential for document collaboration, providing feedback on documents, reviewing proposals and contracts, annotating research papers, and communicating changes or suggestions. Our tool adds comments as visible text boxes on PDF pages, making them perfect for collaboration, feedback, and reviews.
⚠️Corrupted PDF
•Damaged file structure
•Corrupted page data
•Invalid cross-reference tables
•Cannot be opened or viewed
✅Add Comments to PDF
•Clean file structure
•Valid pages extracted
•Proper cross-reference tables
•Fully functional and viewable
PDF Repair Impact
Real data showing the benefits of PDF repair
90K+
Monthly Searches
High demand for PDF repair
100%
Valid Pages Extracted
All recoverable content preserved
10MB
Free Limit
Single file up to 10MB
5-15s
Repair Time
Average processing time
Why Use PDF Repair?
PDF repair offers numerous benefits for recovering corrupted documents:
💾
Recover Important Documents
Recover corrupted PDF files that contain important information. PDF repair can extract valid pages and content from damaged files, allowing you to recover documents that would otherwise be lost. Essential for business documents, legal files, and archived materials.
🔧
Fix File Corruption
Add Comments to PDF files damaged during transfer, storage, or due to system errors. PDF repair tools can fix various types of corruption including damaged file structure, corrupted page data, and invalid cross-reference tables. Restore functionality to corrupted PDFs.
📄
Extract Valid Content
Extract all recoverable pages and content from corrupted PDFs. Even if some pages are too severely damaged, the repair tool will extract all valid pages and rebuild a clean PDF. Essential for preserving as much content as possible from damaged files.
⚡
Quick Recovery
Repair corrupted PDFs quickly and efficiently. Our tool processes files in seconds, extracting valid content and rebuilding clean PDFs. No need for complex software or technical expertise - simply upload and repair.
How it works
Our PDF repair tool makes it easy to fix corrupted PDF files. Follow these simple steps:
1
Upload your corrupted PDF file(s)
Click the upload button or drag and drop your corrupted PDF file(s) into the upload area. You can select multiple files for batch processing. Supported format is .pdf. The files will be uploaded and prepared for repair.
2
Review and repair
Add comments by entering page number, comment text, and author name. Optionally specify X and Y coordinates for precise positioning. Click 'Add Comment' to add each comment to the list. You can add multiple comments before processing.
3
Review and process
Review your uploaded PDF files and comments. You can remove files or comments if needed. Click the 'Add Comments to PDF' button to process your files. Each PDF will have the specified comments added as visible text boxes.
4
Download your PDF(s) with comments
Once processing is complete, download your PDF file(s) with comments added. For batch processing, you can download all PDFs at once or individually. Each PDF contains all the comments you specified, ready for collaboration and review.
✨
Why use our PDF repair tool?
Secure server-side processing
Extracts all valid pages
Batch file processing
Rebuilds clean PDF structure
No registration required
Best Practices for PDF Repair
Following these best practices ensures optimal PDF repair results:
1
Identify Corruption Early
If a PDF file won't open or displays errors, try repairing it as soon as possible. The longer corruption exists, the more difficult it may be to recover content. Early repair increases the chances of recovering all pages and content from your PDF file.
2
Backup Original Files
Before repairing, make a backup copy of your corrupted PDF file. While our repair tool is safe and non-destructive, having a backup ensures you can try alternative repair methods if needed. Keep the original file until you've verified the repaired version is satisfactory.
3
Understand Repair Limitations
PDF repair can extract valid pages and content, but severely corrupted pages may be skipped. If a PDF is too damaged (e.g., completely encrypted or binary corrupted), it may not be repairable. The tool will extract all recoverable content and rebuild a clean PDF with what can be salvaged.
4
Verify Repaired Files
After processing, verify that the PDF with comments opens correctly and displays all comments properly. Check that comments appear on the correct pages and that text is readable. Test the PDF in different PDF viewers to ensure compatibility.
Frequently Asked Questions
How do I add comments to a PDF file?
Upload your PDF file using the upload button or drag and drop it into the designated area. You can upload multiple files for batch processing. Add comments by entering page number, comment text, and author name. Optionally specify X and Y coordinates for precise positioning. Click 'Add Comments to PDF' to process your files. Once processing is complete, download your PDF file(s) with comments added. Free tier supports single files up to 10MB.
Is adding comments to PDF free?
Yes, our Add Comments to PDF tool is free for single files up to 10MB. For larger files (above 10MB) or batch processing (multiple files), a Processing Pass is required. The Processing Pass costs $3.99 and is valid for 24 hours, allowing unlimited processing during that period.
What types of comments can I add to PDF?
You can add text comments, notes, and annotations to PDF files. Each comment can include page number, comment text, author name, and optional X/Y coordinates for positioning. Comments are added as visible text boxes on the PDF pages, making them perfect for collaboration, feedback, and reviews.
Can I add comments to multiple PDF files at once?
Yes! You can upload multiple PDF files at once for batch processing. The same comments will be applied to all PDFs. For batch processing (2+ files), a Processing Pass is required for free tier users.
Is my PDF data secure when adding comments?
Yes, all PDF processing happens on secure servers. Your files are processed and immediately deleted after adding comments. We never store your PDFs or share them with third parties. All processing is encrypted and secure.
What file size limits apply?
Free tier supports single PDF files up to 10MB. For larger files (up to 500MB) or batch processing multiple files, a Processing Pass is required. The Processing Pass costs $3.99 and is valid for 24 hours, allowing unlimited processing during that period.
Can I edit or remove comments after adding them?
Comments are permanently added to the PDF file as text boxes. To modify comments, you would need to process the PDF again with new comments. We recommend reviewing your comments before processing to ensure they are correct.
How long does adding comments to PDF take?
Processing time depends on file size and number of comments. Small files (under 10MB) typically process in 5-15 seconds. Larger files or files with many comments may take 30-60 seconds. Batch processing processes files sequentially.
Related PDF Tools
Explore other PDF tools to work with your documents:
Add Comments to PDF
Our Add Comments to PDF tool helps you add comments, notes, and annotations to PDF files instantly. Collaborate on documents with text comments and feedback. Perfect for reviews, feedback, and collaboration. Batch processing supported. Works securely on our servers - fast, reliable, no registration required.
Add Comments
Add text comments, notes, and annotations to PDF files. Specify page number, comment text, author name, and optional coordinates for precise positioning.
Batch Processing
Add comments to multiple PDF files at once. The same comments are applied to all PDFs in the batch, making it perfect for adding standard feedback or annotations to multiple documents.
Secure Processing
All processing happens on secure servers. Your files are processed and immediately deleted after adding comments. We never store your PDFs or share them with third parties.
Add Comments to PDF Files
Upload PDF files and add comments, notes, and annotations
What is Add Comments to PDF?
Add Comments to PDF is the process of adding text comments, notes, and annotations to PDF files. Comments can be positioned on specific pages with custom text, author names, and optional X/Y coordinates for precise placement. This is essential for collaboration, feedback, reviews, document annotation, and team communication.
According to MDN Web Docs, the FileReader API enables reading PDF files in the browser. Our Add Comments to PDF tool uses pdf-lib, a powerful JavaScript library for PDF manipulation. The pdf-lib library provides comprehensive PDF processing capabilities that can add text overlays, annotations, and comments to PDF documents.
Adding comments to PDF is essential for document collaboration, providing feedback on documents, reviewing proposals and contracts, annotating research papers, and communicating changes or suggestions. Our tool adds comments as visible text boxes on PDF pages, making them perfect for collaboration, feedback, and reviews.
⚠️Corrupted PDF
✅Add Comments to PDF
PDF Repair Impact
Real data showing the benefits of PDF repair
Why Use PDF Repair?
PDF repair offers numerous benefits for recovering corrupted documents:
Recover Important Documents
Recover corrupted PDF files that contain important information. PDF repair can extract valid pages and content from damaged files, allowing you to recover documents that would otherwise be lost. Essential for business documents, legal files, and archived materials.
Fix File Corruption
Add Comments to PDF files damaged during transfer, storage, or due to system errors. PDF repair tools can fix various types of corruption including damaged file structure, corrupted page data, and invalid cross-reference tables. Restore functionality to corrupted PDFs.
Extract Valid Content
Extract all recoverable pages and content from corrupted PDFs. Even if some pages are too severely damaged, the repair tool will extract all valid pages and rebuild a clean PDF. Essential for preserving as much content as possible from damaged files.
Quick Recovery
Repair corrupted PDFs quickly and efficiently. Our tool processes files in seconds, extracting valid content and rebuilding clean PDFs. No need for complex software or technical expertise - simply upload and repair.
How it works
Our PDF repair tool makes it easy to fix corrupted PDF files. Follow these simple steps:
Upload your corrupted PDF file(s)
Click the upload button or drag and drop your corrupted PDF file(s) into the upload area. You can select multiple files for batch processing. Supported format is .pdf. The files will be uploaded and prepared for repair.
Review and repair
Add comments by entering page number, comment text, and author name. Optionally specify X and Y coordinates for precise positioning. Click 'Add Comment' to add each comment to the list. You can add multiple comments before processing.
Review and process
Review your uploaded PDF files and comments. You can remove files or comments if needed. Click the 'Add Comments to PDF' button to process your files. Each PDF will have the specified comments added as visible text boxes.
Download your PDF(s) with comments
Once processing is complete, download your PDF file(s) with comments added. For batch processing, you can download all PDFs at once or individually. Each PDF contains all the comments you specified, ready for collaboration and review.
Why use our PDF repair tool?
Best Practices for PDF Repair
Following these best practices ensures optimal PDF repair results:
Identify Corruption Early
If a PDF file won't open or displays errors, try repairing it as soon as possible. The longer corruption exists, the more difficult it may be to recover content. Early repair increases the chances of recovering all pages and content from your PDF file.
Backup Original Files
Before repairing, make a backup copy of your corrupted PDF file. While our repair tool is safe and non-destructive, having a backup ensures you can try alternative repair methods if needed. Keep the original file until you've verified the repaired version is satisfactory.
Understand Repair Limitations
PDF repair can extract valid pages and content, but severely corrupted pages may be skipped. If a PDF is too damaged (e.g., completely encrypted or binary corrupted), it may not be repairable. The tool will extract all recoverable content and rebuild a clean PDF with what can be salvaged.
Verify Repaired Files
After processing, verify that the PDF with comments opens correctly and displays all comments properly. Check that comments appear on the correct pages and that text is readable. Test the PDF in different PDF viewers to ensure compatibility.
Frequently Asked Questions
How do I add comments to a PDF file?
Upload your PDF file using the upload button or drag and drop it into the designated area. You can upload multiple files for batch processing. Add comments by entering page number, comment text, and author name. Optionally specify X and Y coordinates for precise positioning. Click 'Add Comments to PDF' to process your files. Once processing is complete, download your PDF file(s) with comments added. Free tier supports single files up to 10MB.
Is adding comments to PDF free?
Yes, our Add Comments to PDF tool is free for single files up to 10MB. For larger files (above 10MB) or batch processing (multiple files), a Processing Pass is required. The Processing Pass costs $3.99 and is valid for 24 hours, allowing unlimited processing during that period.
What types of comments can I add to PDF?
You can add text comments, notes, and annotations to PDF files. Each comment can include page number, comment text, author name, and optional X/Y coordinates for positioning. Comments are added as visible text boxes on the PDF pages, making them perfect for collaboration, feedback, and reviews.
Can I add comments to multiple PDF files at once?
Yes! You can upload multiple PDF files at once for batch processing. The same comments will be applied to all PDFs. For batch processing (2+ files), a Processing Pass is required for free tier users.
Is my PDF data secure when adding comments?
Yes, all PDF processing happens on secure servers. Your files are processed and immediately deleted after adding comments. We never store your PDFs or share them with third parties. All processing is encrypted and secure.
What file size limits apply?
Free tier supports single PDF files up to 10MB. For larger files (up to 500MB) or batch processing multiple files, a Processing Pass is required. The Processing Pass costs $3.99 and is valid for 24 hours, allowing unlimited processing during that period.
Can I edit or remove comments after adding them?
Comments are permanently added to the PDF file as text boxes. To modify comments, you would need to process the PDF again with new comments. We recommend reviewing your comments before processing to ensure they are correct.
How long does adding comments to PDF take?
Processing time depends on file size and number of comments. Small files (under 10MB) typically process in 5-15 seconds. Larger files or files with many comments may take 30-60 seconds. Batch processing processes files sequentially.
Related PDF Tools
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