Free Online PDF Tools
Edit PDFs without ever uploading them.
Every PDF tool on this page runs entirely inside your browser. Your documents are opened, edited and re-saved on your own device using pdf-lib — they are never sent to a server, never stored, and never seen by us. That makes SwiftTooly's PDF toolkit a safe choice for contracts, payslips, medical forms and anything else you'd rather not hand to a stranger's web server.
6 PDF Tools
Why use SwiftTooly's PDF Tools
True privacy
Your PDFs stay on your device. No upload means nothing to leak, log or subpoena.
Instant results
No queues and no round-trip to a server — operations finish as fast as your CPU can run them.
No watermarks
Outputs contain only your pages. Free, unbranded, unlimited.
Works offline
Once the page is loaded, you can disconnect from the internet and keep working.
PDF Tools in your browser vs uploaded to a server
SwiftTooly (browser)
Files are decoded in JavaScript with pdf-lib, edited in memory, and re-saved through your browser's download dialog.
Typical upload-to-server tools
Files are uploaded to a third party, processed on their machines, cached on disk, and returned over the network — often with size limits, daily caps or a watermark.
Which PDF tool do you actually need?
The six tools here divide along a clean line. Merger and splitter change which pages are in a document without touching the pages themselves — both copy page objects at the structural level, so nothing is re-rendered and text stays selectable. Rotate is in the same family: it writes an orientation flag into each page's metadata rather than turning pixels, which is why it is completely lossless and why rotating twice returns you exactly where you started. The other three change what the pages contain. The compressor rasterises each page and re-encodes it as a JPEG, which is why it is dramatically effective on scans and close to useless on text documents. PDF to image renders pages out to PNG or JPG files. Image to PDF does the reverse, wrapping photographs into a document. Anything in this second group is a one-way transformation — selectable text becomes pixels — so keep the original if the content needs to remain searchable.
Common workflows that chain several tools
Deleting a page is the most frequently asked question and there is no delete tool, because the splitter and merger already do it: extract the range before the unwanted page, extract the range after it, then merge those two files. The result is the original minus that page, with everything else byte-identical. Getting a scanned document under an email attachment limit usually takes two steps. Compress first at the balanced preset and check the reported size; if it is still too large, split the document in half and send it as two files rather than pushing the compression to a level where the text stops being legible. Turning phone photographs of paper into a usable document works best as crop, then compress, then image to PDF. Cropping to the paper's edges is what makes it read as a scan rather than a snapshot, and compressing before assembly keeps the finished PDF a sensible size — a dozen uncompressed phone photos can produce a file over 100 MB.
What client-side processing cannot do
Being honest about the limits matters more than listing features. Encrypted PDFs cannot be opened by any of these tools: a document protected with an open password has to be decrypted in your PDF viewer first, and the unlocked copy processed here. Owner-password restrictions that limit printing or editing rather than opening generally do not cause a problem. There is no optical character recognition, so a scanned document stays an image and its text is not searchable. There is no digital signature support — signatures are typically invalidated by any structural edit, which is inherent to how signing works rather than a limitation of these tools specifically. Very large jobs are bounded by your device's memory rather than by a server quota, which is usually generous but means a low-memory device can struggle with a several-hundred-megabyte scan. Working in batches is the practical answer when that happens.
Related collections
Frequently asked questions
Are my PDFs really not uploaded anywhere?
- Correct. The PDF tools here use the pdf-lib library running inside your browser tab. Open your browser's network inspector and you'll see no request leaves your device when you merge, split, compress or rotate a file.
Is there a maximum PDF size?
- There is no hard limit, but very large PDFs (hundreds of MB) depend on how much memory your browser can allocate. Most modern laptops handle multi-hundred-page documents comfortably.
Will the output PDF keep its fonts, signatures and form fields?
- Pages are copied byte-for-byte, so embedded fonts, vector graphics, images and visible form content are preserved. Interactive form fields and digital signatures may be flattened depending on the operation.
Can I use these PDFs commercially?
- Yes. SwiftTooly never claims any rights over your content. The processed PDF is yours to use exactly as you would have used the original.
Why doesn't SwiftTooly add a watermark?
- Because we're not trying to upsell you into a paid plan. Every tool is free, unlimited, and free of branding inside your output files.