Annotate, sign visually, and organize PDFs locally
Annotate PDFs with text, highlights, drawings, or a visual signature, then merge, reorder, extract, or ZIP pages in your browser. No upload needed.
Annotate locally
Add notes, highlights, and a visual signature
Edit one PDF page at a time, then export a new local copy. The original file is never changed.
Select an item to move, resize, or delete it. On a keyboard, use Arrow keys to move; use Shift plus Arrow keys to resize.
Ready to download
Open the exported copy and verify every edited page before sharing. This is not a cryptographic signature or redaction tool.
Local by design. PDF content, annotations, signatures, entered text, and filenames are not sent to Useful Atlas analytics by this tool.
Export creates a new PDF. Visual overlays are added to edited pages. Forms, bookmarks, attachments, encryption, accessibility structure, and existing signatures may change or stop working. Keep and verify the original.
Organize pages · browser-local
Merge, extract, or reorder PDFs
Keep your originals. Check the selection, prepare a new file, then choose when to download.
- 1 Choose sources
- 2 Review the order
- 3 Prepare and download
Choose files to begin. PDFs are checked locally when selected; output is created only after you press Prepare.
Combine files
Merge PDFs
Select 2 to 12 PDFs. Each file's pages stay together in the displayed file order.
Selecting new files proposes a replacement, not an append. Unreadable candidates leave the current selection intact.
No merge files selected.
Prepared merge
Output page inventory
Select pages
Extract or reorder pages
Choose one PDF. Enter the page sequence for one new PDF or a ZIP of individual pages.
No split file selected.
Entered order is output order: use 3,1,2 or a descending range such as 8-5. Duplicates are included once. Every endpoint must be inside this PDF.
Choose a PDF to plan the output order.
ZIP preparation needs a valid selection of no more than 200 pages. A longer valid selection can still be prepared as one PDF.
Prepared page selection
Output page inventory
No upload or saved file history. Sources and outputs stay in this tab. Replacements, removal and clearing require confirmation; changing order invalidates its prepared download. The annotation editor is separate.
Check the actual document before sharing. The inventory is not a visual preview or a guarantee of preserved content, forms, signatures, bookmarks or attachments. Keep your originals.
Browser work limits: 100 MiB of source files per selection (104,857,600 bytes), 12 merge files, 10,000 source/output pages, 12,000 selection characters and 200 ZIP pages. These are guardrails, not a device-capacity guarantee. Cancel discards late results; synchronous PDF work may finish first.
No upload needed for browser-local tools. Files stay on your device for supported local converters.
Inputs are not stored by Useful Atlas. Processing happens in the current browser tab.
What this PDF workspace supports
Merge copies every page from the selected PDFs into a new document in the displayed order. Extract or reorder copies selected pages into one new PDF in the sequence you enter. ZIP export creates one single-page PDF per selected source page.
The organizer checks readable sources before replacement, asks before clearing work and separates Prepare from Download. It reopens prepared PDFs and ZIP entries to check page count, dimensions and rotation. The displayed output inventory is not a visual preview: pages with the same dimensions still require a content and order check in your PDF reader.
The annotation editor renders one page at a time and stores text, highlights, pen marks, and visual signatures only in the current tab. Export adds visual overlays to edited pages and creates a new local PDF. Its selection is separate from merge, extraction, and ZIP preparation.
PDF rendering, editing, and ZIP code is loaded only when you use the relevant workspace. Files stay in the current browser tab and generated downloads are created on your device. Cancel prevents late organizer results from publishing; it does not interrupt every synchronous library operation.
This version intentionally does not claim lossless compression, OCR, cryptographic signatures, form repair, password removal, or file conversion. Those operations need separate quality and security boundaries.
Page-copy method reviewed 13 September 2026 against the PDF-LIB API reference. A successful page-copy operation does not certify all document-level features.
Verify important documents
- Keep every original PDF.
- Review the prepared inventory and open the downloaded result before sharing it.
- Check actual page content, order, orientation, forms, and signatures.
- Confirm every annotation appears in the expected position.
- Avoid editing a digitally signed original when signature validity matters.
FAQ
Are my PDF files uploaded?
No upload needed for browser-local tools. Files stay on your device for supported local converters. This PDF workspace reads and creates documents with client-side JavaScript.
Can I merge PDFs in a specific order?
Yes. Select 2 to 12 PDFs and use Up and Down to arrange the file order. Prepare merged PDF creates a local result and checks its page inventory. Review that inventory, then choose Download prepared PDF. Preparation does not automatically download.
How do I split or extract PDF pages?
Choose one PDF and enter pages or ranges such as 3,1,2 or 8-5. Prepare one PDF in that order, or prepare a ZIP containing one PDF per selected page. Download is a separate action. Every page number must be within the chosen PDF; duplicate pages are included once.
What happens when I choose replacement files?
The organizer checks every candidate locally before offering replacement. Keep current or Escape preserves the existing files, order and prepared result. Unreadable candidates do not replace the current selection. Confirming replacement invalidates only that organizer section’s prepared output; the annotation editor remains separate.
Can I change the page order?
Yes. The entered page sequence becomes the output sequence. Use individual pages, ascending ranges, or descending ranges. Editing the order removes the previous prepared download so an outdated result cannot be mistaken for the current one.
Can I add a signature to a PDF?
You can add a typed or drawn visual signature locally. This adds a visual signature to the PDF. It does not create a certificate-based cryptographic digital signature.
Can I annotate more than one PDF page?
Yes. Text, pen marks, highlights, and visual signatures are stored per page while the PDF remains open in this tab. Export creates one new PDF containing every page and the visual overlays you added.
Will signatures, forms, bookmarks, and attachments be preserved?
Do not rely on it. Page copying can change or remove document-level features, interactive forms, signatures, bookmarks, attachments, and encryption. The prepared inventory checks page count, dimensions and rotation; it is not a visual-content or signature-validity guarantee. Keep the original files and verify important outputs.
What are the organizer’s browser-processing limits?
Each source selection is limited to 100 MiB (104,857,600 bytes). Merge accepts up to 12 PDFs; the selected source set and output order are limited to 10,000 pages, page expressions to 12,000 characters, and ZIP export to 200 pages. These guardrails do not guarantee that every device can process a document at the limits.