How to split a PDF in the browser without uploading

Cut pages out of a PDF on this device. Folio reads the file in the tab, writes the parts in memory, and never posts the document to a splitter API.

Open the splitter Email size limits

The usual reason to split a PDF is not “I enjoy extra files”. Someone asked for page 12, or an inbox will not take 40 pages, or a folder should not hold the full contract. Hosted splitters solve that by taking the upload. That is the wrong bargain for an NDA, a medical scan, or a passport PDF.

Folio’s splitter is a page copier. It does not crop, redact, OCR, or rename chapters from bookmarks. It counts pages from the start of the file. Password-protected PDFs are refused. After you have the pages you need, you can merge a different subset on the homepage.

A scan that is too heavy for mail is often a split job, not a compress job — why scans stay heavy. Attachment caps: email. Chat: WhatsApp. Compress will not invent fewer pages. This page is how to cut them.

Three modes, three different outputs

Page ranges → one PDF

Type 1-3, 5, 8-10. You get one file with those seven pages in that order — not three files. This is the mode for “send them pages 4–7 only” or “signature leaf plus definitions”. If you expected three downloads, you picked the wrong mode.

Every N pages → a ZIP of chunks

A 30-page scan that must travel as 10-page emails is N = 10. The last chunk can be shorter. This is not “split on bookmarks” and not “split on blank pages”. Folio does not read chapter names from the outline.

One PDF per page → a ZIP of singles

Each page becomes its own file, named from the page number. Use this when a portal wants page-by-page attachments, or when you will merge only some of those pages later. Two or more pages download as a ZIP. One page is just a PDF.

Page numbers are file order, not the footer

Page 1 is the first page of the file. Ignore “page 12 of 40” printed in a header if it disagrees. Many reports start at i, ii, 1. Ranges are 1-based and inclusive. On a 12-page file, 10-12 is valid and 10-20 is rejected. We error instead of clipping silently. We do not read “iii” or “A-4” off the page surface.

Steps

1. Open the Split tab
Use Split. You should see a drop zone that takes one PDF at a time. If you landed on Merge by habit, you would be combining files, not cutting them.
2. Drop the PDF you want to cut
The tab checks the header for %PDF, the size (over 80 MB is rejected), and a page count. A password error means unlock the file in Preview, Acrobat or the scanner app, then drop the unprotected copy. A non-PDF is rejected rather than converted.
3. Read the page count we show
If the count is 1, split has nothing useful to do unless you only wanted a rewritten copy, which is not this tool’s job. Open the original alongside and confirm which physical page is “the signature page” before you type a number.
4. Pick a mode and tap Split
Keep the tab open. The copier runs in memory. A long document on a phone can hitch or reload Safari; that is RAM, not an upload timeout. If it fails, try a desktop browser with the same file. You still have the original — Folio never took it.
5. Download the PDF or the ZIP
Open the result and check the pages before you delete anything. Then keep or discard the original on your disk. Folio does not retain a shadow copy. Closing the tab discards the bytes in memory. There is no job ID.

If split did not work

Password or encryption: unlock locally, retry. Wrong range syntax: use 1-3, 5, 8-10 without words. Range beyond the page count: we error instead of clipping silently. Phone out of memory: fewer pages, or a laptop. Corrupt PDF: another reader will usually fail too. Folio will not repair a broken xref table. More refusals: FAQ.

Split is not redaction

Pages you did not extract are simply not in the new file. They are not blacked out. If the leftover file still sits in a shared folder, the clauses are still there. Split is not a legal hold and not a crop tool. It does not remove a letterhead from a page you kept.

Do not run compress on the full NDA “to make split faster”. Split already copies pages. A pre-pass through compress only risks forms and metadata you did not need to touch. If the NDA is huge because it is a scan of initials on every page, split will still work if the tab has RAM, but a phone may fail — use a laptop. That weight is explained on scans.

Versus Preview, Acrobat, and upload sites

Apple Preview and Acrobat can extract pages well, on one computer, with a licence or a platform lock-in. Folio is the same class of job in a tab you can open on a borrowed PC without installing those. iLovePDF and cousins will split after an upload and often after an account. Use them when the document is public. Use Folio when it is not.

After the extract, if the send is mail, read email size. If it is chat, read WhatsApp. If you still need one packet, merge the pieces. Real examples (signature page, HR portal) sit on use cases.

Pick ZIP versus one PDF before you tap

A clerk who asked for “pages 4–7 as one attachment” wants range mode. A portal with five empty file fields wants one-PDF-per-page, then you pick which singles to upload. A mailbox that caps 10 MB per message wants every-N on a 40-page scan. Switching mode after a failed send is fine — Folio did not keep the last job. Switching mode in your head after you already downloaded the wrong shape wastes a round. The three modes are not three names for the same button.

If you then need those extracts stapled to a cover letter, that is merge, a different tab. If the extract is still too heavy for Gmail, it is usually still a scan — scans — not a missing fourth split mode.

Frequently asked questions

Do my PDF files leave this device?+

No. Folio merge, split and compress run in this browser tab with JavaScript. The PDF bytes are read into memory on your phone or computer, rewritten there, and offered back as a download from that same tab. We do not provide an upload API for documents, we do not store PDFs on a server, and closing the tab discards the bytes. That is the difference from typical online PDF sites, which send the file to a machine you do not control.

If I type 1-3, 5, 8-10, do I get three PDFs?+

No. Page-range mode builds one PDF that contains exactly those pages, in order. 1-3, 5, 8-10 becomes pages 1, 2, 3, 5, 8, 9 and 10 in a single file. To get a separate PDF for every page, choose “One PDF per page” (a ZIP if there is more than one). To cut a long report into chunks of equal length, choose “Every N pages”.

How do page numbers work?+

Numbers are 1-based and count pages in the file, not the printed folio in the header. Page 1 is the first page of the PDF. Ranges are inclusive. If the document has 12 pages, 10-12 is valid and 10-20 is rejected. We do not read “iii” or “A-4” labels from the page surface.

How large can a PDF be, and can I process a batch?+

Each file is rejected above 80 MB before we try to parse it, because a larger PDF will often crash a tab. Merge accepts two or more PDFs in one go. Compress accepts one or more and zips the results if you add several. Split works on one PDF at a time so page numbers stay unambiguous. A ‘batch’ that is really twenty 40 MB scans will still be limited by RAM; if the tab struggles, do fewer files per pass.

What happens if the PDF is password-protected?+

Folio cannot open an encrypted PDF in the browser without the password, and we will not ask you to type that password into this site. You will see an error instead of a silent failure. Remove the password in the tool that created the file (Preview, Acrobat, the scanner app), then drop the unprotected PDF here. We do not keep a keychain and we do not offer ‘unlock PDF’ as a product.

Can I merge files again after I split them?+

Yes. Split writes ordinary PDFs (or a ZIP of PDFs). Drop those parts onto the Merge tab in the order you want. Page ranges that you extracted as one file come back as that file’s pages, in the order they had inside the extract. Nothing on our side remembers the original, because nothing was uploaded. Keep the source PDF if you might need a page you did not extract.

When do ads appear, and do you ask me to click them?+

Ad slots are reserved after a successful download and in the footer, plus a mid-page slot below the how-it-works block. Until Google marks the site Ready they are placeholders, not live ads. We do not pay you to click, we do not instruct you to click, and we do not place ads over Merge / Split / Compress. Please do not click ads as a favour — that violates Google policy and can close the account.

Who runs Folio and how do I contact you?+

Folio is a local-first PDF utility maintained as a public tool, not a venture product with a sales team. For a bug, a broken PDF that should have worked, or a privacy question, email ultaultimatum@gmail.com. Include the page URL, the browser, and what you expected. Do not attach the PDF unless we ask — the whole point of this site is that documents stay with you. We do not offer phone support.

Will Folio shrink a scanned ID or a stack of photographed pages?+

Almost never in a way that matters. Those files are heavy because of the pictures inside, not because of PDF metadata. Folio does not downsample images and does not OCR. Split if you only need some pages. See the scans guide. Do not upload an ID to a random compressor.

Related on this site