Many free PDF editors come with a catch: a cap on how many files you can process, a prompt to install a desktop app, or a monthly plan to unlock the features you need. And the ones that run online usually upload your document to their servers before any editing can happen.
WorkWithPDF takes a different approach. The editing tools are free, with no usage limits and no account to create. They run inside your browser, so your file isn't uploaded to our servers.
This guide walks through what the editor can and can't do, how the local processing model works, and when it is the right choice over a paid alternative.
What You Can Do With the Editor
Add text. Place text anywhere on a page by setting its position, then choose the font size and colour. Useful for filling in forms that are not interactive, adding notes, or labelling pages.
Edit existing text — not yet. WorkWithPDF can't change the text that's already in a PDF. For that, you'll need the source document or a desktop editor.
Add an image watermark. Place a logo or stamp image across your pages with Watermark PDF, with control over opacity, scale, rotation, and which pages it appears on.
Add signatures. Draw a signature with your mouse, trackpad, or finger and place it on any page.
Add notes. Place coloured note boxes at specific positions on a page to mark up a draft.
Add page numbers and text watermarks. Number pages with your choice of position and starting number, or stamp “Draft” or “Confidential” across selected pages.
Rearrange pages. Reorder, rotate, or delete pages, or pull out just the ones you need.
Every one of these operations runs in your browser. There is no cloud save and no autosave to our servers. The site does collect basic usage data, such as which tool ran, but never the content of your documents.
Why Local Editing Matters
PDF editing is usually done on documents that carry some weight. Contracts with markup. Forms with personal information. Invoices being prepared for a client. Proposals with pricing that is not yet public. For these documents, the convenience of a cloud editor is outweighed by the cost of handing the content to a third party, even temporarily.
The conventional answer is to install desktop software such as Adobe Acrobat Pro. That works, but the software is expensive, requires an installation and often an enterprise licence, and adds maintenance overhead. For occasional editing, or for teams where a few people need the capability without a centralised IT rollout, a browser based tool that processes files locally keeps documents off third party servers, like desktop software does, with the flexibility of a web app.
WorkWithPDF is free. You can verify that files are processed locally by opening browser developer tools and watching the Network tab during an editing session. No request contains your document.
When to Use This Tool vs Alternatives
Use WorkWithPDF when you want a free editor that processes your file in the browser. Signing, adding text, annotating a draft, adding page numbers and watermarks, and reorganising pages all work well.
Use Adobe Acrobat Pro when you need to change existing text, fill interactive forms, or use advanced features that require full PDF standard support, such as PDF form design, accessibility tagging, preflight checks for professional print, or true redaction. This is a paid product with a significant installation footprint.
Use a desktop alternative when you often work offline. WorkWithPDF needs an internet connection to load.
Free PDF Editor: Tool Comparison
| Feature | WorkWithPDF | Smallpdf | Adobe Acrobat Pro | Foxit PDF Editor |
|---|---|---|---|---|
| File uploaded to server for processing | No | Yes | No, desktop | No, desktop |
| Installation required | No | No | Yes | Yes |
| Cost | Free, no account | Paid plans available | Paid plans | Paid plans |
How the Browser Editor Works
When you load a tool, the browser downloads the page's code along with open source PDF libraries: pdf-lib for writing PDFs and PDF.js for reading and displaying them. Most of the heavy lifting runs in a Web Worker, a background thread inside your browser.
When you run a tool, the file is read into browser memory, your changes are applied there, and the new PDF is offered as a download. A copy is also saved in your browser's storage on your device until you clear the workspace.
Your document is not sent over the network at any point. You do need an internet connection to load the site — there is no offline mode.
Typical Use Cases
Filling out forms. Job applications, insurance claim forms, school enrolment documents. Place text where each answer goes, sign if required, and save the completed file. Interactive form fields aren't supported yet, so the text goes on top of the page.
Marking up a draft. Add coloured notes to a contract or proposal before sending it back.
Adding missing details. Add a date, a reference number, or initials to a page without going back to the source document.
Adding a signature. A common last step before sending a contract back. Draw it and place it on the signature line.
Annotating a paper. Researchers and students often mark up papers with notes. Because the file is processed locally, it isn't uploaded to our servers.
Rearranging pages. Move the executive summary to the front, drop an appendix that is no longer needed, or combine sections from different documents with Merge PDF.
Frequently Asked Questions
Is it really free?
Yes. All the tools are free, with no usage limits, no account, and no payment.
Do I need to install anything?
No. The editor runs in the browser. Chrome, Firefox, Safari, and Edge all work on any operating system.
Can I edit scanned PDFs?
You can add text, signatures, notes, and page numbers on top of a scanned PDF. Changing the scanned text itself isn't possible — WorkWithPDF can't edit existing text and doesn't offer OCR.
What about encrypted PDFs?
Password-protected PDFs aren't supported at the moment. Remove the password first in the app you normally use to open the file.
Does the editor preserve the original formatting?
Yes. The editing tools add content on top of your pages and leave the rest of the document as it was.
Can I undo my changes?
There's no undo history, but your original file is never changed — each run creates a new PDF. If you don't like the result, adjust your settings and run the tool again.