100% local, 100% private, 100% free

Free Online PDF Compression, Secure & Private

Free browser-based PDF web app to compress, merge, split, and convert documents privately. No uploads, no account, and everything stays on your device.

Drag files here or click to select

Drop PDF files

File queue 0 / 50
Upload files to get started

How to Use Pidify

Drag and drop your files onto the upload area. Depending on the tool selected, you can add PDFs, images, or Office documents.

Choose your desired operation (compress, merge, split, convert, etc.) and configure the options. Then click Process to start.

Once finished, you can download the resulting files individually or all at once.

Use Cases, Best Settings & Common Mistakes

Use cases: optimize scanned PDFs, merge signed documents, split large reports by chapter, and convert office files for universal sharing.

Best settings: use moderate compression for readability, reorder pages before merge, and validate custom split ranges before processing.

Common mistakes: over-compressing text-heavy scans, mixing wrong file types per tool mode, and skipping a quick page-order check before export.

Frequently asked questions

Why Local Processing Matters
Most online PDF tools upload your documents to their servers for processing. This poses a significant privacy risk if your PDFs contain sensitive personal information, financial records, or confidential business data.

Pidify is different. We bring the power of PDF manipulation directly into your web browser. When you compress, merge, or convert files on Pidify, the actual processing happens using the processor on your device. Your files are never uploaded, stored, or viewed by anyone else.
Are my PDFs uploaded to any server?
No. Everything runs entirely in your browser. Your files never leave your device.
Is converting Office documents private too?
Yes, DOCX, TXT, and XLSX files are completely converted to PDF locally using Javascript, guaranteeing absolute privacy.
How does compression work?
We rasterize the pages into images directly on your computer to drastically decrease the total file size without the need to upload it.
What is the best way to reduce PDF size?
Lowering image-heavy content and optimizing page render quality usually gives the biggest size reduction. Scanned PDFs often shrink the most.
Can I merge multiple PDFs in the correct order?
Yes. Add your files in any order, then use reorder options or file position controls before processing to produce one merged PDF.
Can I split a PDF by page range?
Yes. Use custom page syntax like 1,3-5 to extract specific pages, or choose extract-all to get each page separately in a ZIP file.
Is Pidify free and private?
Yes. Pidify is free to use and all processing runs locally in your browser. No account is required and files are not uploaded to a server.
Can I convert Word, Excel, or TXT to PDF online?
Yes. Pidify supports DOCX, XLSX, and TXT conversion directly in your browser for quick document export to PDF.
Does PDF compression affect quality?
It can. Stronger compression can reduce visual fidelity, especially on scanned pages. Use moderate settings when readability is more important than maximum size savings.

Explore Our Suite

A unified ecosystem of free, private, 100% client-side browser utilities.

P

Pressify

Client-side image compression & conversion. Resize and optimize photos with zero server uploads.

W

Wavify

Professional browser-based audio toolkit. Trim, compress, convert, and visualize audio files securely.

V

Videify

Client-side video compression & conversion. Convert and optimize clips with zero server uploads.

C

Charify

The ultimate text & cryptography toolkit. AES-GCM encryption, format transformations, and instant analytics.