PROCESSED LOCALLY
⬡ zero uploads

Every PDF tool you need,
running inside your browser.

Compress, convert, merge, sign, redact and read scans. Choose a tool and open a file — it is processed on this device and never uploaded.

Why this is different

No document is uploaded. This can be independently verified.

Comparable services transmit your file to a server and undertake to delete it subsequently. PaperJET has no server to which a document could be sent: the tools are compiled to WebAssembly and execute within this browser tab, on your own device. Nothing is queued, nothing is capped, and the work continues if you go offline after the page has loaded.

To verify Load this page, disconnect from the network, and then compress a document. The operation completes as normal. No server-dependent service could do so.
No uploadThe file is read from local storage by the browser and does not leave it. No copy exists anywhere other than on your own device.
No account requiredNo registration, no email address and no consent banner. An account is optional and serves only to retain your preferences.
No limitsNo file size cap, no daily quota, no queue and no watermark applied to output. The only constraint is the memory of your device.
Established componentsBuilt on pdf-lib, pdf.js and Tesseract, the same libraries used across the industry, executed locally.

Questions

Frequently asked questions

Are documents uploaded to a server?

No. Every tool executes within your own browser using WebAssembly. The file is read from local storage by the browser and is not transmitted, so no server holds a copy of it. This may be verified by disconnecting from the network once the page has loaded; the tools continue to function normally.

Is PaperJET free to use?

Yes. All tools are provided free of charge, with no account required, no watermark applied and no file size limit.

Can a scanned PDF be processed?

Yes. The OCR tool reads the text from a scan and can return the same scan with an invisible text layer applied, so that the document appears unchanged while becoming searchable and available for copying.

Can a PDF be converted to Word or Excel?

Yes, where the PDF already contains text. Where the file is a scan, the OCR tool should be used instead; the interface will indicate which case applies.

Is there a file size limit?

No. As processing is performed on your own device rather than on a server, the constraint is the available memory of that device rather than an upload cap.

Compress
Drop a PDF here, or click to choose
It stays on this computer

Merge PDF files

Combines any number of PDFs into a single document, in the order you arrange them. The work happens inside this browser tab: the files are read from your own disk and are never transmitted, so a merged contract or medical record does not pass through anyone else's server on its way to becoming one file.

How to merge PDF files

  1. Open the documents you want to combine. Add them all at once, or a few at a time.
  2. Drag the entries into the order you want. The list is the final page order.
  3. Merge, and save the result. Nothing was uploaded at any point.
The order is the one you set

Files are combined exactly as listed, not alphabetically and not by the order they were opened. Bookmarks and page labels from each source document are preserved.

No size ceiling

There is no per-file cap and no daily quota, because there is no server paying for the transfer. The practical limit is your device's memory.

Questions about merging

Are the PDFs uploaded anywhere when merging?

No. The merge is performed by WebAssembly running in this browser tab. You can verify this by loading the page, disconnecting from the network, and then merging — the operation completes as normal.

How many PDFs can be merged at once?

There is no fixed limit. Documents of several hundred pages combine without difficulty; the only constraint is the memory available to your browser.

Does merging reduce the quality of the pages?

No. Merging copies the existing page objects into a new document without re-encoding them, so text stays selectable and images are untouched.

Can password-protected PDFs be merged?

A PDF that requires a password to open must be unlocked before it can be merged. Documents that are merely restricted from printing or editing combine normally.