PDF tools
Merge, split, compress, protect, unlock, sign, redact, scan and convert PDFs — all of it inside your browser, so the document never leaves your device.
34 free tools · no sign-up · nothing uploaded
Combine several PDFs into one, in the order you choose.
Break one PDF into separate files by page count or range.
Make a PDF smaller, with an honest choice about the trade-off.
Turn every page of a PDF into a JPG image.
Export PDF pages as lossless PNG images.
Turn JPG photos into a single PDF document.
Combine PNG images into one PDF document.
Any mix of image formats into one PDF.
Keep only the pages you want as a new PDF.
Remove pages from a PDF and keep the rest.
Put a PDF's pages into a different order.
Turn pages the right way up, permanently.
Stamp text like DRAFT or CONFIDENTIAL across every page.
Number the pages of a PDF, your way.
Pull the plain text out of a PDF.
Turn a PDF into an editable .docx document.
Convert a .docx document into a PDF.
Read the text out of a scanned PDF.
Turn an HTML file or snippet into a PDF.
Turn Markdown into a formatted PDF.
Turn a plain text file into a tidy PDF.
See every page and drag, rotate or delete it.
Permanently remove sensitive text, not just cover it.
Draw your signature and place it on the page.
Trim margins or scan borders from every page.
Spot every wording change between two PDFs.
Turn a PDF into Markdown for notes, docs and LLMs.
Recover tables from a PDF into a spreadsheet.
Turn a spreadsheet into a readable PDF.
Add a password and lock down printing and copying.
Remove a password or restrictions from your own PDF.
Recover what can be read from a damaged PDF.
Use your camera to turn paper into a PDF.
Turn a PDF into a slide deck you can present.
Why in-browser PDF tools matter
PDFs are the format people use for the documents they care about most: contracts, payslips, medical letters, passports, tax returns. Almost every free PDF site online asks you to upload those documents to a server you know nothing about, then trusts you to believe a promise that the file was deleted afterwards.
DO101 takes the promise out of it. Every tool on this page uses pdf-lib and pdf.js running inside the page you are reading. There is no upload endpoint behind any of them, so your document physically cannot reach a server. Switch off your network after the page loads and most of them still work.
What each tool is for
Combining and separating: Merge PDF joins several files into one in the order you set. Split PDF breaks one file into many. Extract pages keeps a selection, Delete pages drops one, and Reorder pages shuffles them.
Fixing and finishing: Rotate PDF saves the rotation into the file so it sticks. Page numbers and watermarks stamp every page. Compress PDF makes files smaller, and it is honest about the trade-off in each mode.
Converting: Turn pages into JPG or PNG, build a PDF from photos or any images, pull out plain text, produce an editable Word document, go the other way with Word to PDF, or read a scan with PDF OCR.
Where the honest limits are
Almost everything a PDF service offers can be done in a browser, and DO101 now does nearly all of it — including real AES password protection, removing protection from documents you own, and building a PowerPoint deck. Two things are genuinely different, and pretending otherwise would waste your time.
PDF to Word converts text, not layout. Rebuilding columns and tables needs heavy layout analysis that realistically belongs on a server. DO101 does the part it can do well and tells you plainly what it leaves out, instead of handing back a mangled document and calling it a conversion. The same applies to PDF to PowerPoint, where each page becomes a picture on a slide rather than editable text boxes.
PDF/A archiving is not offered. True PDF/A conformance requires embedding every font, attaching colour profiles and writing conforming XMP metadata. A file that claims to be PDF/A but is not would fail exactly when it matters — at the archive that rejects it years later.
Unlocking is not cracking. The unlock tool removes restrictions from a document that already opens for you, and removes a password when you type it yourself. A wrong password is rejected. It will not open a document you do not have access to, and it will not be changed to.
Frequently asked questions
Are my PDFs uploaded to a server?
No. Every tool in this category runs in your browser using pdf-lib and pdf.js. DO101 operates no upload endpoint for PDFs, so the file cannot leave your device even by accident.
Is there a file size limit?
100 MB per file. The real constraint is your device's memory: a laptop handles large documents comfortably, an older phone will struggle above about 25 MB, and the tools warn you when a file is big enough to be slow.
Do the tools add a watermark?
Never. DO101 does not brand your documents. The only watermark that appears is the one you deliberately add with the watermark tool.
Can I use these tools offline?
Mostly yes. Once a tool page has loaded, its code is cached, so merging, splitting and rotating keep working without a connection. PDF OCR is the exception — it downloads a language model the first time you use it.
Can I open a password-protected PDF here?
Most tools need an unprotected file, so run it through the Unlock tool first — it removes the password when you type the one you already use, and strips printing or copying restrictions with no password at all. It is not a cracker: a wrong password is rejected.
Is the password protection real encryption?
Yes. Protect PDF applies standard AES encryption on your device, and verifies the output genuinely carries an encryption dictionary before offering the download. The password is never transmitted or stored, which also means nobody can recover it for you.