PDF Metadata Editor – Edit PDF Properties (Title, Author, Keywords)
Every PDF contains hidden metadata – Title, Author, Subject, Keywords, and more. This information appears in document properties, search results, and file managers. Whether you want to remove personal information, add professional branding, or improve document searchability, our PDF Metadata Editor lets you edit these fields instantly. All processing is local: no upload, 100% private, completely free.
Document Identity Manager
Select your PDF to audit and edit its hidden properties. All changes stay in your browser.
Local Processing • No Upload • Edit Metadata Privately
First page preview
📄 What is PDF Metadata and Why Should You Edit It?
Metadata is “data about data.” In a PDF, metadata includes information like the document’s Title, Author, Subject, and Keywords. This is not the content you see on the page – it’s stored in the file header. Many applications (Adobe Acrobat, browsers, file explorers) display this metadata. Search engines may also use it to index PDFs. Editing metadata can help you:
- Remove personal information – If you created a PDF on a shared computer, the Author field might contain a name or ID you don’t want visible.
- Brand your documents – Set your company name as Author, a descriptive Title, and relevant Keywords to improve discoverability.
- Prepare for professional submission – Job applications, legal filings, and academic submissions look more polished with proper metadata.
1. Remove Unwanted or Outdated Metadata
When you scan a document at a library or cyber cafe, the scanning software often stamps its name or the computer’s username into the Author field. By editing metadata, you can erase that and set your own name – keeping your document clean and professional.
2. Improve Search Engine Optimization (SEO) for PDFs
If you publish PDFs on your website, search engines like Google read the metadata. A well‑crafted Title and a set of Keywords can help your PDF rank higher for relevant searches. For example, a whitepaper with Title “2025 Market Trends” and Keywords “finance, investment, forecast” is more likely to appear in search results.
3. Organize Large Document Libraries
Companies, universities, and researchers often manage thousands of PDFs. When you set consistent metadata (e.g., “Author” = department name, “Keywords” = project code), you can sort, filter, and search your document database much more efficiently. Our tool lets you batch‑process (one at a time, but unlimited) to standardize your library.
📌 How to Edit PDF Metadata (Step by Step):
- Select your PDF: Click the indigo button and choose the file you want to edit.
- View current metadata: The tool reads existing Title, Author, Subject, and Keywords (if any) and fills the fields.
- Edit the fields: Type your desired values. You can also leave fields blank to remove existing metadata.
- Save: Click “SAVE & DOWNLOAD UPDATED PDF”. The tool rebuilds the PDF with the new metadata using pdf-lib.
- Verify: Download the file, right‑click → Properties, and check the new metadata.
Note: The original PDF remains unchanged. You get a new copy with updated metadata. The content of the PDF (text, images, layout) is not altered.
🔒 100% Private – No Server, No Upload
Many online metadata editors require you to upload your PDF to a remote server. This exposes sensitive documents – contracts, personal certificates, financial reports – to potential data breaches. Free PDF Tools uses pdf-lib and PDF.js to read and rewrite metadata entirely in your browser. Your file never leaves your device. No upload, no server logs, no tracking. Absolute privacy guaranteed.
⚙️ How the Metadata Editing Works Technically
We load your PDF using pdf-lib, a powerful JavaScript library. We extract existing fields (Title, Author, Subject, Keywords) and populate the form. When you click “Save”, we create a new PDF document with the same pages, copy all content, and then set the metadata fields using the library’s methods (setTitle(), setAuthor(), etc.). We also set the producer string (optional) and modification date. The output is a new PDF with updated metadata but identical visual content. The original file is never modified. A first‑page preview is generated using PDF.js so you can confirm you have the correct file before editing.
❓ Frequently Asked Questions – PDF Metadata Editing
Q: Does editing metadata change the content or layout of my PDF?
A: No. Only the hidden document properties are changed. The text, images, fonts, and formatting remain exactly as in the original file.
Q: Will the new metadata be visible to everyone who opens the PDF?
A: Yes. Anyone who views the document properties (e.g., right‑click → Properties in Windows, or “Document Properties” in Adobe Reader) will see the Title, Author, Subject, and Keywords you set.
Q: Can I remove all metadata (set fields to blank)?
A: Yes. Simply leave the input fields empty when you save. The resulting PDF will have no Title, Author, etc. Some libraries may still write a default “Producer” (the tool name), but you can delete that value as well.
Q: Does this tool work on password‑protected PDFs?
A: Only if you provide the password. Our tool cannot bypass encryption. You must unlock the PDF first using a decryption tool or the known password.
Q: Can I edit other metadata fields (e.g., Creation Date, Producer)?
A: The current version focuses on Title, Author, Subject, and Keywords – the most commonly used fields. You can modify the “Producer” string by editing the script (we set it to “Free PDF Tools”). For advanced needs, you would need desktop software.
Q: Is the tool really free and unlimited?
A: Absolutely. Free PDF Tools is completely free. Edit metadata on as many PDFs as you need – no registration, no watermarks, no hidden fees.
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