Best PDF Editors for Windows After Two Weeks of Scanned Contracts

I spent the last two weeks buried in scanned contracts. Sixty-one PDFs, most of them badly faxed then re-scanned, several with signature blocks that needed filling, all of them needing some combination of text edits, page reordering, and merging. I tried every editor I could get onto my Windows 11 machine without paying a subscription. Here is what actually worked, what left watermarks, and what I would not touch again.

The test machine was a five-year-old ThinkPad with 16 GB RAM. Nothing exotic. The files ranged from a clean 2 MB lease to a 41 MB scanned services agreement with skewed pages. I timed each tool on the same documents and noted every limitation.

LibreOffice Draw: the closest free thing to Acrobat

LibreOffice Draw opens a PDF as an editable canvas. File, then Open, then pick your document. Each page loads and you click straight into the text.

This is the only free desktop tool in my test that let me change existing words, not just slap a text box on top. I fixed a wrong date in a contract header and corrected a misspelled name in a signature block, both without any overlay trickery.

What it does well: text edits, moving images, adding or deleting pages, basic layout changes, form filling, light annotation.

What it does badly: complex layouts break. I had one contract with a two-column table that reflowed into a mess the moment I touched anything. Font substitution is a real problem. If the PDF uses a font you do not have installed, LibreOffice swaps in something else and your line breaks shift. On a scanned document where the text layer is thin or missing, Draw has nothing to grab onto in the first place.

No watermark. No account. Free on Windows, Mac, and Linux. If your edits are simple, this is the answer.

Microsoft Edge: the zero-install option nobody opens

Edge has a PDF editor built in, and most people on Windows never notice it. Right-click any PDF, pick Open with, then Microsoft Edge. A toolbar appears at the top of the document.

From there you can add text, highlight, draw, drop in shapes, fill form fields, add a signature, and reorder or delete pages. It handled the signature blocks on my contracts in about the time it took to find my pen.

The catch is real, though. You cannot change existing text. Everything you add floats on top of the original layer. For annotation, form filling, and page management it is genuinely the fastest option because there is nothing to install. For anything that touches the actual words, look elsewhere.

No watermark, no sign-up, and it works on both Windows and Mac.

PDF-XChange Editor: the fastest viewer on Windows

PDF-XChange Editor is Windows-only and it is the most feature-rich free desktop editor I used. Text editing, annotations, form filling, page management, and OCR are all free with no watermark on core features.

It is also the fastest PDF viewer I tested. Large documents opened noticeably quicker than in Adobe Reader, and the 41 MB scanned file that made other tools stutter felt nearly instant here. That alone earned it a permanent spot on my machine.

Two things to know. Merging documents on the free tier stamps a small watermark on the merged output, so if you merge regularly you will hit that. Advanced content editing also carries the watermark. For single-document edits and form work, though, the free version is generous.

Sejda: the most generous free limits, web and desktop

Sejda allows documents up to 200 pages and 50 MB with no watermark and no account on the free tier. That is far more room than most competitors give you.

More importantly, it does genuine text editing, meaning it can change existing text in the PDF rather than only adding annotation layers. The web version covers most tasks.

For sensitive contracts, use the desktop app instead. It processes files locally, which matters when the document is a client agreement you would rather not upload to someone else’s server. Sejda runs on Windows, Mac, and Linux, web plus desktop.

The web tools: Smallpdf, ILovePDF, and browser editors

Smallpdf is the most polished browser experience. Upload, then add text, images, shapes, signatures, and annotations. It also merges, splits, compresses, and converts to and from Word, Excel, and PowerPoint.

The free tier is capped at two documents per day, no watermark on those. That cap is the whole story. Two contracts and you are done until tomorrow, or you pay $9 a month. For a one-off it is fine. For a batch of sixty it is useless.

ILovePDF is not for editing text, but it is the best free tool for PDF management: merging, splitting, compressing, rotating, and converting formats, with multiple operations per day allowed. I used it for the bulk merge at the end and it did not blink.

There is also a browser-based editor at pdffreeeditor.com that runs entirely locally, no uploads and no accounts. The site says it has more than 140,000 users and offers compress, merge, split, sign, and converters alongside the editor itself, all with no signup and no watermark.

Google Docs: the trick for turning a scan into editable text

Upload a PDF to Google Drive, right-click it, choose Open with, then Google Docs. Google converts the file into an editable document. Edit freely, then download as PDF via File, Download, PDF Document.

This works best on text-heavy PDFs without complex formatting. My scanned contracts with a decent text layer came through clean enough to copy clauses out of. Documents heavy on tables and graphics degraded. You need a Google account, and your file ends up on Google’s servers, which rules it out for anything confidential.

What about Adobe Acrobat Pro and the rest?

Acrobat Pro costs $23 a month. It is the benchmark every tool above is measured against, and for heavy professional editing it still wins. But for the contract work I was doing, none of the free tools left me stuck badly enough to justify the subscription.

Worth noting for Mac users: Preview handles annotation, form filling, signatures, merging, cropping, and adding text with no watermark and no account. It cannot edit existing text, but for annotation workflows it is seamless. Open a PDF, click the pen icon for the Markup toolbar, and drag pages between thumbnails to merge.

Which one should you actually install

• Simple text edits, no budget: LibreOffice Draw. It is the closest free alternative to Acrobat for full editing, and the only free desktop tool here that rewrites existing text properly.
• Filling forms and signing, fast: Microsoft Edge. Zero install, no watermark, done in seconds.
• A Windows power user who opens large PDFs daily: PDF-XChange Editor. Fastest viewer I tested, no watermark on core features, watch out for the merge watermark.
• Batch work under 200 pages per file: Sejda, especially the desktop app if the documents are sensitive.
• Merge, split, compress: ILovePDF.
• Converting a scan into editable text: Google Docs, if the file is not confidential.

If I had to pick one to keep installed for contract season, it is PDF-XChange Editor for viewing and light editing, with LibreOffice Draw open in the background for the moments when a contract has an actual wrong word in it. Those two together covered everything the paid tools would have, at zero cost.

Skip the web editors if your documents are private. Skip Acrobat Pro if your edits are occasional. And do not trust any tool that promises full editing on a scanned image with no OCR layer underneath, because there is nothing there for it to edit.