Preview on Mac removes individual PDF pages from View > Thumbnails, but the same task also runs in any modern browser through Delete PDF Pages, a free JavaScript tool that processes files locally and never uploads them to a server. The browser approach works on every operating system that ships with a web browser, including Windows, Linux, ChromeOS, and mobile devices where Preview is not installed, and it leaves no trace on a remote service because every byte of processing happens on your own device. Preview's thumbnail method is convenient when you are already sitting at your Mac with the file open, but it requires Apple hardware and a working copy of the Preview app. For anyone on a Windows PC at work, a Chromebook at school, a Linux box, or a phone, the browser tool is the faster path because there is nothing to install and no account to create. Both approaches produce a brand-new PDF that keeps the remaining pages exactly as they were, with no re-rendering, no watermark, and no compression of the pages you choose to keep.
How Preview on Mac deletes PDF pages
Preview is the default PDF viewer on macOS, and it hides useful page-editing controls behind its thumbnail view. To remove a single page, open the file in Preview, choose View > Thumbnails or press Command+Option+2, click the thumbnail of the page you want gone, press the Delete key on your keyboard, and then save the file with Command+S. To remove several pages in one shot, Shift-click to select a contiguous block of thumbnails or Command-click to pick non-adjacent pages, then press Delete. Rearranging is done by dragging thumbnails into a new order, and pulling pages in from another PDF is handled through Edit > Insert > Page from File. Preview will not edit a PDF that is encrypted with a password until the protection is removed with the correct password first.
The catch is that Preview is a Mac-only application. It is not available on Windows, Linux, ChromeOS, or on most iPad and Android setups, and a work machine may not allow you to install anything at all. People who arrive at this page from a non-Apple device, or from a locked-down office PC, need a method that does not depend on the operating system or on admin rights. That is exactly where the browser-based tool comes in.
Delete PDF pages in any browser, step by step
- Click Browse PDF and choose the file you want to trim. The tool reads it locally and shows the total page count right next to the file name, so you can confirm you opened the right document before deleting anything.
- In the pages box, type the pages to delete using single numbers and ranges, for example 2, 5-7. The parser accepts a single page like 3, a comma-separated list like 2, 4, 9, an inclusive range like 5-7, or any mix of the two such as 1, 3, 8-12. Out-of-range numbers and malformed entries are ignored automatically instead of failing the whole run.
- Click Delete pages, then use the download link to save your new PDF. The remaining pages are copied into a fresh file. Nothing is ever uploaded because every step runs inside your browser.
Page notation the tool accepts
| Input you type | Meaning |
|---|---|
| 3 | Delete page 3 only. |
| 2, 4, 9 | Delete pages 2, 4, and 9 as separate entries. |
| 5-7 | Delete the inclusive range from page 5 through page 7. |
| 1, 3, 8-12 | Mix single pages and ranges in one entry. |
| 99 (when the PDF has 10 pages) | Ignored automatically; the rest of your list still runs. |
That forgiving parser matters because most users type their list by hand, and a single typo should not ruin the whole edit. If your selection would empty the document, the tool refuses and shows a clear message, because a valid PDF must keep at least one page.
Privacy, format preservation, and limits
All processing happens locally inside your web browser using JavaScript, so the PDF never travels to a remote server, is never stored, and is never visible to anyone but you. That makes the tool appropriate for contracts, bank statements, medical records, tax forms, and scanned ID documents that you would not want sitting on a cloud service. Once the page has loaded, the tool works fully offline, so you can trim documents on a plane, on public Wi-Fi you do not trust, or on a locked-down work machine that blocks most other sites.
Pages you keep are copied byte-for-structure into a brand-new PDF rather than re-rendered, so fonts, images, vector graphics, form fields, and page dimensions stay exactly as they were in the original. There is no recompression and no quality loss, which is the main reason the output is indistinguishable from a hand-edited original opened in Preview or Acrobat. There is no account, no email, no watermark, and no page-count limit beyond what your device's memory can handle.
Encrypted or password-protected PDFs cannot be edited until the protection is removed, because the tool refuses to bypass protection that would corrupt the file. If your PDF is protected, unlock it first with the correct password and then return here to delete pages. If a file is genuinely corrupt or is not a real PDF, the tool tells you plainly instead of silently producing a broken file.
When the browser approach makes more sense
| Situation | Best choice |
|---|---|
| You are on a Mac and the file is already open in Preview | Use Preview's View > Thumbnails; no extra tool needed. |
| You are on Windows, Linux, ChromeOS, or a phone | Use the browser tool, since Preview is not available there. |
| The file is confidential and must not touch any server | Use the browser tool, since it processes locally and uploads nothing. |
| You want to delete many scattered pages in one typed list | Use the browser tool, since its range and comma syntax is faster than clicking thumbnails one by one. |
| You are on a work machine where you cannot install software | Use the browser tool, since it runs entirely in your existing browser. |
| The PDF is password-protected | Unlock the PDF with the correct password, then use either method. |
If you are reading this on an iPhone or Android, Preview's macOS workflow does not apply to your device at all. The browser tool is built for that case and runs on mobile browsers the same way it runs on a desktop. For a walk-through tailored to a small screen, see How to Delete PDF Pages on Your Phone.
Common reasons people use either approach include stripping blank scanner pages, removing a cover sheet or confidentiality page before sharing a report, cutting an appendix out of a long manual, deleting duplicate pages from a merged file, trimming a manual down to the chapter you need, and pulling out pages that contain personal information before you send the document to someone else. Because the output is a standard PDF, the trimmed file opens in every reader, prints correctly, and uploads to any system that accepts PDFs.