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Operation
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Processed locally. PDFs are never uploaded; operation settings stay local unless you explicitly save a Pro cloud preset.
How to merge, split, and rotate PDFs for free
PDF Studio combines, separates, and reorients PDF files directly in your browser tab. The pdf-lib engine runs on this page, so the bytes of every document you add stay on your own machine: nothing is uploaded, queued on a server, or stored after you close the tab. That makes it usable for contracts, payslips, and scanned identity documents that you would not paste into an online converter.
Merge, split, or rotate a PDF in five steps
- Add your PDF filesDrop one or more PDFs onto the upload area, or click it to pick files. Each file is inspected locally and listed with its page count and size, and any document that cannot be parsed is flagged before you run anything.
- Put the files in the order you wantMerging follows the order of the file list, so use the up and down controls beside each row to arrange them. Remove a file you added by mistake with the delete control on its row.
- Choose Merge, Split, or RotateMerge joins every listed PDF into one document. Split takes pages out of each file. Rotate turns pages by a fixed angle.
- Set the options for that operationSplit offers three modes: extract all pages, extract a page range written as an expression such as 1-5, 8, 11-15, or split every N pages. Rotate accepts 90, 180, or 270 degrees.
- Run it and download the resultPress the run button and watch the per-file progress. Merge produces a single merged PDF; rotate returns one rotated PDF per input; a split that yields several documents is packaged as a ZIP so one click saves everything.
What people use PDF Studio for
- Bundle scanned paperwork into one attachmentScanners often emit one PDF per sheet. Add them all, order them, and merge so a claim, invoice batch, or application goes out as a single attachment.
- Send only the pages that matterExtract a page range such as 2-4 from a long report when a reviewer asked for one section, instead of sharing the whole document.
- Chop a large document into fixed chunksSplit every N pages to break a scanned book or a bank statement into evenly sized files that fit an upload limit elsewhere.
- Fix sideways scansRotate pages by 90, 180, or 270 degrees when a feeder pulled the paper in the wrong orientation, so the file is readable without turning your head.
PDF Studio questions
- Is this PDF merger free?
- Yes. Merging, splitting, and rotating are available on this page without an account, and there is no watermark on the output.
- Are my PDFs uploaded to a server?
- No. The PDF is parsed and rewritten by JavaScript running in your browser tab. File bytes and filenames never leave the device, so there is nothing on our side to delete afterwards.
- How do I control the page order when merging?
- Merge follows the order of the file list top to bottom. Use the up and down controls on each row to rearrange the files before you run the merge.
- What page-range syntax does Split accept?
- Comma-separated single pages and hyphenated ranges, for example 1-5, 8, 11-15. Pages are numbered from 1, and the range is applied to every file in the list.
- Can it compress a PDF or add a password?
- No. PDF Studio currently does only three things: merge, split, and rotate. Compression, password protection, and image export are not available here.
- Is there a file-size limit?
- There is no server limit because there is no server. The practical ceiling is the memory your browser tab can hold, so very large scans may fail on a low-memory device; splitting a huge file in smaller batches usually works.