Edit a PDF online for free. Really free.
No trial that expires halfway through your edit. No watermark stamped on the result. No email wall. Open your PDF in the browser, change the text you need, and download it.
- ✓Nothing to install, works in any modern browser
- ✓Windows, Mac, Linux, Chromebook, iPad
- ✓Your file is deleted from our server automatically
Your file stays private. It's kept in this browser so you can come back to it, and our server deletes its working copy automatically.
- 0
- mutations to anything you didn't edit
- 100%
- original fonts, sizes and colours kept
- ∞
- undo steps and saved revisions
- $0
- no sign up, no watermark, no trial
Three steps. 0 mutations.
- Step 1
Drop in your PDF
Any text based PDF: Word, Google Docs, Canva, payroll or billing exports. No account, no watermark.
- Step 2
Click a line and type
Edit right on the page, in the document's own font. Press Enter and the paragraph rewraps like it was typeset that way.
- Step 3
Download the same PDF
Same file, same fonts, same layout. The only difference is the words you changed.
Questions people ask
+Is MythosPDF really free?
Yes. Editing and downloading are free, with no sign up, no watermark, no trial and no page limit on the file you download.
+What does "zero mutation" mean?
It means we never modify what we don't need to modify. When you change a line, MythosPDF rewrites that text and leaves every other object in the PDF (images, vector graphics, tables, other text, fonts) exactly as it was.
+Will my fonts and layout change?
No. Your edit is set in the PDF's own font, at the same size and colour, measured with exact glyph metrics. Nothing is swapped for a lookalike font and nothing else on the page moves unless your edit needs the room.
+What if my new text is longer than the old text?
The paragraph rewraps the way the original was typeset, and only the content below moves down to make room. If the page runs out of space, the overflow continues on a new page inserted right after it.
+Where is my file stored?
A copy stays in your own browser so you can come back and keep editing. Our server keeps a working copy only while you edit and deletes it automatically. We never sell or share documents.
+Can I edit a scanned PDF?
Not yet. A scanned page is a picture of text, not text, so there's nothing to edit. PDFs exported from Word, Google Docs, Canva, payroll or billing software work great.
From the blog
All guides →PDF Reflow Explained: What Happens When Your Edited Text Gets Longer
PDFs don't reflow by themselves. Here's how MythosPDF rewraps paragraphs, moves only the content below, and adds continuation pages without touching the rest.
Can You Edit a Scanned PDF? Text PDFs vs. Image PDFs Explained
Why you can't click to edit text in a scanned PDF, how to tell a scan from a text PDF in 10 seconds, and what your options are.
How to Edit an Invoice PDF: Change Dates, Amounts and Addresses
Fix a wrong date, address, reference or line item on an invoice PDF in under a minute, with totals kept aligned and your billing tool's layout intact.
Your PDF. Your words. Nothing else touched.
Free, in your browser, in under a minute.