Free Online PDF Tools: How to Merge, Split, Convert, and More

What Makes PDF Different From Other Document Formats

PDF stands for Portable Document Format, and "portable" is the whole idea. Adobe created it in the early 1990s to fix a common headache. A document made in one program often looked different on another computer, with swapped fonts and shifted layouts. A PDF locks in how each page looks, including the position of text, fonts, images, and spacing. It looks the same on any device or software that opens it.

That fixed layout is also why editing a PDF is harder than editing a Word file. You're not working with text that flows. You're working with a page that has already been laid out.

Combining Files Into One PDF

Putting several files together is the most common PDF job. If you already have separate PDFs, like a signed cover page, a contract, and an ID scan, our Merge PDF tool joins them in the order you choose.

If your files are photos or scans instead, you can skip the step of making a PDF from each one. Use JPG to PDF for JPG files and PNG to PDF for PNG files. For a mix of formats, Image to PDF takes them all together. Each one builds a single multi-page PDF, with one image per page.

Breaking a PDF Apart

Sometimes you need the opposite: pieces of a document instead of the whole thing. To save every page as its own file, our Split PDF tool does it in one pass. If you only need to drop a few pages, like a blank cover sheet or a page you scanned twice, don't split everything. Our Delete PDF Pages tool lets you pick exactly which pages to remove and keeps the rest.

Putting Pages in the Right Order

Scans often come out shuffled, especially double-sided ones where the back pages land at the end. Instead of scanning again, open the file in our Reorder PDF Pages tool and drag the page thumbnails into place. It's a quick fix for a stack that was merged in the wrong order.

Converting a PDF Into Images

Going from PDF to image comes up when you want to drop a page into a slide, post it on a website, or send a quick preview instead of the whole file. Our PDF to JPG tool saves each page as a JPG, which is small and opens anywhere. When the page has sharp text, a chart, or a transparent area, use PDF to PNG instead, since PNG keeps edges crisp.

Fixing Pages That Print or Display Sideways

Scans end up rotated when a page feeds into the scanner sideways or the scanning app guesses the orientation wrong. Instead of scanning again, our Rotate PDF tool turns the pages by 90 or 180 degrees. It rotates all the pages together, so if only one or two are sideways, split those out first, rotate them, and merge everything back.

Why a Scanned PDF Can't Be Searched or Copied From

It catches people off guard. You open a scanned PDF, press Ctrl+F to find a word, and nothing happens, even though the word is printed right there. That's because a scan isn't text. It's a photo of a page stored inside a PDF, so there are no characters to search or copy. A PDF exported straight from a word processor stores real characters, which is why you can search and copy from it.

Turning a scanned image back into text takes optical character recognition, or OCR, which reads the shapes of letters and rebuilds the words. None of the tools here do OCR. That's worth knowing before you assume a scan will behave like a normal document.

Shrinking a PDF That Is Too Large to Send

Email limits and upload forms have a way of rejecting PDFs that seemed fine a minute ago. The cause is usually images. A scan is one full-size photo per page, and it takes far more space than the text it shows. Our Compress PDF tool re-saves each page as a lighter image, which cuts the size a lot. One trade-off: the text on those pages can no longer be selected or searched, so keep the original file too.

Adding Watermarks and Page Numbers

A watermark or page numbers can make a difference for documents going out to clients or being submitted somewhere formal. Our Add Watermark to PDF tool stamps text across every page, which is handy for marking a draft or a confidential copy. To number the pages of a document that has none, use PDF Page Numbers.

Pulling Images and Text Out of a PDF

Sometimes you don't want the PDF, just something inside it. For the pictures, like photos in a report or a product catalog, our Extract Images from PDF tool saves the embedded images so you don't have to screenshot each one. For the words, our Extract Text from PDF tool copies out the text or saves it as a TXT file. It reads the real text inside the file, so it works on text-based PDFs but not on scans.

Cleaning Up a File's Details

Every PDF carries hidden details such as a title, an author, and the app that made it. The title shows up in your browser tab, and the author name can travel with the file when you share it. Before you send a document, our PDF Metadata Editor lets you fix those fields or clear them.

Removing Restrictions From a PDF

Some PDFs open fine but block printing, copying, or editing. Those limits are often left over from a workflow you no longer care about. Our Unlock PDF tool can remove them when the file doesn't need a password to open. To be clear about what it isn't, it's not a password cracker. It can't open a PDF that asks for a real password just to view it.

Quick Reference: Task to Tool

Chaining a Few Tools Together

Real documents rarely need just one step. A stack of scans might need rotating before it's merged, and the merged file might still be too big to email. You don't need one tool that does everything. Running a file through two or three focused tools, one after another, works just as well. Download the result of one, then add it to the next.

A typical run goes like this: straighten crooked pages, combine them, and compress the result if it's still bigger than you need. Each step takes seconds, and you can check the file after every stage instead of hoping one bulk operation got it all right.

What Happens to Your File When You Use an Online Tool

It's fair to ask before you upload a contract or a tax form anywhere: where does the file go? Many online PDF tools upload it to a server, process it there, and send back a download link. That means your file leaves your device, even if it's deleted afterward.

The tools on this site work differently. Merging, splitting, compressing, and every other job above runs in your browser, on your own device. Your file isn't sent anywhere. That matters most for anything you wouldn't want on a server you don't control, even for a short time. You can check it yourself. Open your browser's developer tools, switch to the Network tab, and watch while you use a tool.

Online Tool or Desktop Software: When to Use Which

For one-off jobs like the ones above, a browser tool is usually faster than installing a program you'll use once and forget. There's nothing to download, nothing to license, and nothing to learn for a task you might do a few times a year.

Desktop software still earns its place for heavier work. That includes redesigning a form, editing the actual text inside a PDF, adding a digital signature field, or running the same batch job every week. For the everyday tasks in this guide, a browser is usually enough.

Frequently Asked Questions