Drop your PDF here
or click to browse — files never leave your device
What do you want to do?
Removes metadata and optimises internal streams. Lossless — no quality reduction.
Add all the PDFs you want to merge, then drag to reorder them.
Split Options
Rotation
Click pages to select them for deletion. Selected pages are highlighted in red.
Add your images below. Drag to reorder them, then click Convert to PDF.
Set a password to protect your PDF. Anyone opening it will need to enter this password.
Add a diagonal text watermark to every page of your PDF.
Automatically add page numbers to every page.
Flattening removes all interactive form fields and locks the PDF so it can no longer be edited. Use this before sharing final documents.
Click the pages you want to keep in your new PDF. All other pages will be removed.
Upload an image (JPG or PNG) and stamp it onto your chosen pages.
Drag the page thumbnails into the order you want, then click Save New Order.
Set how many points to trim from each edge. 72 points = 1 inch. Useful for removing borders or white space.
Draw your signature above, then click Place signature to add it to the PDF.
Upload multiple PDFs, choose an operation, and apply it to all of them. Results download as a zip.
Click below to extract text from your PDF before using AI features.
Get a clear, concise summary of your entire PDF.
Extract the most important points from your PDF as a numbered list.
Ask anything about your PDF. What are the payment terms? Who signed it? What's the deadline?
Paste or type text from your PDF, give an instruction, and AI will rewrite it.
Translate your PDF into another language. AI rebuilds the document with translated text.
✦ Upgrade to Pro to unlock 17 additional languages.
AI will read your PDF and suggest a descriptive filename based on the content.
AI features use 1 of your 20 daily requests per action. Resets midnight UTC.
Compress PDF Files Online — Free & Private
Reduce your PDF file size instantly in your browser. DocDeck's PDF compressor works entirely on your device — your files are never uploaded to a server.
How to use this tool
- Drop or select your PDF file.
- The tool analyses and compresses the file using smart optimisation.
- Download your smaller PDF — done.
Frequently asked questions
How much smaller will my PDF get?
Typically 20–70% smaller depending on content. PDFs with lots of images compress the most.
Will compression reduce quality?
For most documents, no noticeable difference. Image-heavy PDFs may see slight quality reduction at high compression ratios.
Is there a file size limit?
Processing happens in your browser so very large files (500MB+) may be slow depending on your device.
Are my files sent to a server?
No. Everything runs locally in your browser. Your PDF never leaves your device.