PDF Compressor
AI-powered PDF compression — smart modes, batch queue, quality reports & 100% private
What is PDF Compressor?
PDF Compressor is a free browser-based PDF tool from Farvixo that lets you AI-powered PDF compression — smart modes, batch queue, quality reports & 100% private. It runs entirely on your own device using WebAssembly, so the document is never uploaded to a server. There is no sign-up, no watermark on the output and no cap on how many files you process.
How to use PDF Compressor
Drag your PDFs into PDF Compressor or click to browse. The files stay on your device — nothing is uploaded to a server.
Reorder, select page ranges and pick the output settings you need. PDF Compressor shows a live preview so you can check the result before committing to it.
Download the new PDF straight away. No watermark, no page limit and no sign-up — run PDF Compressor as often as you need.
Frequently Asked Questions
How much can I compress a PDF?
Typically 40–85% reduction for image-heavy PDFs. AI Analyze shows compression potential before you compress.
Which compression mode should I use?
Smart AI picks automatically. Use Email Ready for attachments under 5MB, Web for fast loading, or Lossless for text-only PDFs.
Will quality be affected?
High Quality and Print modes preserve readability. Maximum mode targets smallest size. Quality score is shown in the report.
Can I compress multiple PDFs at once?
Yes — batch upload, ZIP import, queue manager, and ZIP download for batch results.
Are password-protected PDFs supported?
Yes. Enter the owner password on upload and compression runs locally in your browser.
Is it safe for confidential documents?
100% browser processing — files never leave your device. Auto-private, no server storage.
Can I compress to a specific file size?
Yes — enable Target file size and set KB (e.g. 200KB for Aadhaar UIDAI upload). AI binary-searches quality until the target is met.
What you can use PDF Compressor for
- Preparing a document for an email attachment or an upload form with a size limit
- Students and office workers who need one PDF change without buying a desktop editor
- Handling contracts, invoices or ID documents that should not be uploaded to a third-party server
- Cleaning up a scanned document before archiving or sharing it
PDF Compressor at a glance
- Tool
- PDF Compressor — PDF Tools
- Purpose
- AI-powered PDF compression — smart modes, batch queue, quality reports & 100% private
- Input
- One or more files (PDF)
- Output
- PDF file (plus the chosen export format where the tool converts)
- Processing
- In your browser — files are never uploaded to a server
- Price
- Free, unlimited, no account required
- Limitations
- Bounded by your device's memory and CPU rather than a server quota; very large files may be slow on older hardware
Tips for better results
- Check the page count and orientation in the preview before you download — reordering afterwards means starting over.
- If a PDF refuses to open, it is usually password-protected; remove the password first, then re-run this tool.
- Very large PDFs are limited by your device memory, not by an upload cap. Splitting a 500-page file into parts is faster than processing it whole.
Common problems and how to fix them
The PDF will not load
The file is encrypted or was produced by a non-standard writer. Open it in a PDF reader, print it back to PDF, and try again.
Text comes out garbled or as boxes
The PDF has no embedded font or no text layer at all. A scanned page needs OCR first — use PDF OCR, then re-run this tool.
The browser tab becomes unresponsive
The document is larger than the available memory. Close other tabs, or split the PDF and process it in sections.
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