PDF StudioFree

Edit a PDF in your browser, without uploading it anywhere

Most free PDF sites upload your file to do the work. These do it on your own device — the page loads, the tool runs where you are, and the file never leaves the machine. For a signed contract or a payslip, that is the whole difference.

Open PDF StudioSee pricing

Free on every plan, including the free account.

How it works

  1. 1

    Pick the tool

    Merge, split, rotate, compress, sign, redact, convert, add page numbers, and more.

  2. 2

    Drop the file in

    It opens straight away. There is no upload, because there is nowhere to upload it to.

  3. 3

    Do the job

    The work happens in the browser tab you are looking at.

  4. 4

    Download it

    The finished file saves straight to your device. Nothing is kept on our side, because nothing was ever sent to our side.

What you get

  • Merge, split, rotate, crop and reorder pages
  • Compress, flatten and convert — PDF to Word, image to PDF, PDF to text
  • Edit the document itself — add text, fill forms, annotate, highlight and sign
  • Redact properly — emails, phone numbers, card and tax numbers
  • Find and replace text inside a PDF, and add watermarks or page numbers
  • Files stay on your device: the tools run in your browser

Who it’s for

  • Anyone who needs one PDF job done and does not want to upload the file
  • Businesses handling contracts, invoices and forms
  • People sending documents that contain someone else's private details

Questions

Can I edit a PDF for free?
Yes. Add text anywhere on the page, fill in form fields, highlight, annotate, sign, and find and replace text inside the document. It is free, there is no watermark on the result, and the file never leaves your device — the editor runs in the browser tab you already have open.
Do I have to sign up to edit a PDF?
No. Open the page, drop the file in and start working. There is no sign-up, no email and no upload, because there is nowhere to upload it to — the tools run on your own machine. Only buying an export of a finished file asks for an account, and it asks at that moment rather than before you start.
Does my file get uploaded anywhere?
No. The PDF tools run in your browser, on your device. The one exception is the AI read in the PDF editor — reading words off a scanned page has to be done elsewhere, which is why it is the only part that costs credits and why it says so before it runs.
Is there a catch on the free tools?
The PDF tools are free and do not watermark your file. The separate PDF editor is free to use, and getting the edited file out costs A$1 per file, or A$5 for ten — unlimited on Pro. That is stated in the editor before you pay, not after.
How many tools are there?
More than twenty-five, including a full editor.

The other tools

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