Free · No sign-up · Nothing uploaded
Edit a PDF online, free. Your file never leaves your device.
Click a paragraph and type. OasisPDF changes the real text of your PDF, in its own font, and the lines wrap again. Fill in forms, sign, highlight, rearrange pages. No account and no watermark.
Why the limit? The editor works on your file on your own device, with nothing uploaded. That takes browser features only recent desktop versions of Chrome and Edge have.
or drop one anywhere on this page
Your file stays on this device. Nothing is uploaded.
What you can do
Edit PDF text
Fix a typo, rewrite a sentence, change a date. The text is edited in the file itself, in the font it was set in, and the paragraph wraps again as you type. Size, color, bold, italic, alignment and lists are in the bar above the page while you type.
Fill in a PDF form
Click a field and type; Tab goes on to the next. Text fields, check boxes, radio buttons and drop-down lists are filled in so that every PDF reader shows what you entered.
Sign a PDF
Draw your signature, type it in a handwriting font, or use a photo of it: the paper is taken away and the ink stays. Put it on the page with one click.
Highlight and annotate
Highlight, underline and strike through text, draw by hand, add lines, arrows, shapes and notes. They are saved as standard PDF comments that other readers show too.
Organize pages
Drag thumbnails to reorder pages. Turn, delete and crop them, add an empty page, number the pages, or save a few pages as a file of their own.
Merge PDFs
Open several PDFs as one document, add more wherever you want them, put everything in order and save one file.
Protect with a password
Set a password that is asked for when the file is opened, change it, or remove it from a file whose password you have. Files are encrypted with AES-256.
Edit a scanned PDF
A scanned page is a picture. OasisPDF reads the words on your device so they can be found, copied and edited, and sets the words you change again in the closest matching font.
Pictures and drawings
Add a picture, or move, resize, turn, flip, replace or delete the ones on the page. Everything else stays exactly where it was.
Find and replace
Search the whole document, with or without matching case and whole words, and replace one place or all of them. One undo takes it all back.
Undo, and see what changed
Undo and redo have no limit. A line you can slide across the page shows the document before and after your changes.
Works without a connection
After the first visit the editor opens offline, and it can be installed like an app. Changes you have not saved yet are kept on your device and offered again next time.
Private because of how it is built
Most online PDF editors send your file to their servers and delete it some hours later. OasisPDF has no such server. The editor is a program your browser runs: it opens the file from your disk, changes it in memory and writes it back, all on your own computer.
That is why there is no account and nothing to wait for. A contract, a medical form or a bank statement is read by nobody but you. You can check it: switch off your connection after the page has loaded, and opening, editing and saving go on working. Only the extras that are fetched when you first ask for them, such as the reader for scanned pages, need a connection.
When you save, you choose what the file keeps. A clean file holds only what the document still uses, so text and pages you deleted are really gone from it. A file with its history keeps the earlier bytes, which a digital signature needs.
How it works
Open your PDF
Choose a file or drop it on the page. It opens at once, because there is nothing to upload.
Click and change it
Click text to type in it, and a field of a form to fill it in. The bar has the tools to sign and mark up; pages are arranged in the strip of thumbnails.
Save
Save back to the same file or as a copy. No watermark is added.
What you need
A Windows or Mac computer with Google Chrome or Microsoft Edge, version 156 or newer, with graphics acceleration switched on (it is, unless somebody switched it off). On Chromebooks and on Linux the editor works where the browser has WebGPU switched on: recent Chromebooks, and Linux with recent Intel or NVIDIA graphics. Phones and tablets are not supported yet. If the editor cannot start, the page says why and what to do.
Questions and answers
Is it really free?
Yes. Every tool on this page is free to use, with no account, no trial period and no watermark on your file.
Is my PDF uploaded anywhere?
No. The file is opened, edited and saved by your browser on your own device. It is never sent to a server, so there is nothing to delete afterwards.
Can I change the text that is already in a PDF?
Yes. Click a paragraph and type. The text is changed in the file itself, not covered with a box, and the lines of the paragraph wrap again. A few kinds of text can be moved or deleted but not typed in yet: Arabic script, Hebrew with vowel points, vertical Chinese and Japanese, and text in fonts the file stores as drawings. The editor says so when you select such text.
Will the font stay the same?
Where the PDF carries the font, your changes are typed in that font. For a letter the file’s font does not have, OasisPDF uses the same font from its own library or the closest match by measure, and a small label says which of the three it was.
Can I edit a scanned PDF?
Yes. The words are read from the picture on your device, in English, Spanish, Portuguese, French, German or Hebrew. After that they can be found and copied, and the words you edit are set again in a matching font. A slide or a poster that was saved as a picture is read the same way.
Can I fill in and sign a form?
Yes. Fields of a PDF form are filled in where they are, and a signature you draw, type or photograph is placed on the page as a picture. It is not a certificate-based digital signature.
Does it work on a Mac? On a Chromebook? On a phone?
It works in Chrome and Edge on Windows and Mac computers, in Chrome on recent Chromebooks, and on Linux where the browser has WebGPU switched on. Phones and tablets, Safari and Firefox are not supported yet.
How large can a PDF be?
Files smaller than 2 GB open, and documents of hundreds of pages scroll smoothly, because only the pages in view are drawn. Very large files need memory: about three times their size.
What happens to text I delete?
By default a saved file is written anew with only what the document still uses, so deleted text, pictures and pages are not in it any more. You can choose to keep the file’s history instead.