A fast, free, and privacy-first PDF editor accessible directly in your browser. No downloads, no accounts, just upload and edit.
or click to select a file from your computer
Get your documents signed in seconds without leaving your browser.
Step 1
Drag and drop your file into the editor or click to select a document from your computer.
Step 2
Add your signature, text, stamps, or other annotations using the intuitive editing tools.
Step 3
Export your edited PDF directly to your device. No watermarks, no sign-ups.
All the essential tools for fast and easy PDF editing.
Your files are processed locally on your computer. We never upload or store your documents.
Upload your PDF and start making changes in seconds. Our editor is built for speed and simplicity.
Easily create your signature by drawing, typing your name, or uploading an image of your signature.
Add new text blocks anywhere on your document. Customize font size and color to match.
Quickly insert common symbols like checkmarks, crosses, and more to fill out forms.
Get straight to editing. We don't require accounts, so you can work quickly and anonymously.
A growing toolkit of fast, private, browser-based utilities.
Most online PDF tools work by uploading. Your document travels to a company’s server, gets processed there, and comes back to you. That is a reasonable way to build software, and it is fine for a birthday invitation. It is a less comfortable trade for an employment contract, a mortgage application, a medical form, or a client’s financial records.
Docento.app is built the other way round. When you drop a PDF here, your browser reads it into memory using the standard File API. It is rendered by PDF.js, Mozilla’s open-source PDF engine, and your edits are written back into the document by pdf-lib. Both run as JavaScript on your own machine. When you export, the finished file is assembled in memory and handed straight to your browser’s download mechanism.
There is no request carrying your document to us, because there is no upload endpoint to carry it to. You can check this yourself in thirty seconds: load this page, then turn off your Wi-Fi and edit a PDF anyway. Everything keeps working, which would be impossible if the processing happened on a server. Or open your browser’s developer tools, watch the Network tab while you export, and see that your file never appears in it.
The honest cost of this design is that we cannot recover a file for you, cannot see what you signed, and have nothing to hand over if anyone asks us for your documents. We think those are the right limitations for a tool people use on documents that matter. More detail on the About page and in our guide to in-browser PDF privacy.
We keep a reference library on the format and the work around it — written by the people who build these tools, and corrected when readers tell us we got something wrong.
The three ways to make a signature, why electronic and digital signatures are not the same thing, and whether it holds up legally.
Interactive, flat, and scanned forms behave completely differently. Work out which one you have before you start fighting it.
A PDF stores a finished page, not editable text. Once that clicks, every confusing thing about PDF tools starts making sense.
Scanned pages, embedded fonts, and uncompressed images are usually to blame — and the fix depends on which one it is.
An untagged PDF is not harder for a screen-reader user. It is silent. What to do about it, mostly at the source.
What actually happens to a document you upload, what retention policies really promise, and when it matters.
Have questions? We have answers.