PDFSulab Blog — PDF Guides & How-tos

Merge, split, convert and edit PDFs in your browser. Explore 41 free tools and their practical guides. Files are processed on your device.

  • OCR PDF — Make scanned letters, forms and study notes searchable without changing their visible pages. OCR adds a hidden text layer so a PDF reader can find and copy recognised words.
  • Merge PDF — Combine separate PDFs into one document for a submission, reading pack or archive. The order you choose becomes the order of the final pages.
  • Split PDF — Separate a large document into smaller PDFs, or share only the pages someone needs. Different split modes suit chapters, individual pages and regular batches.
  • Compress PDF — Try reducing a PDF for email or a size-limited upload. The right setting depends on whether preserving text and detail matters more than file size.
  • Rotate PDF — Correct sideways or upside-down pages so a document opens in the right reading direction.
  • Delete PDF Pages — Remove blank sheets, duplicate scans or pages you do not want in a shared copy.
  • Extract PDF Pages — Create a focused PDF containing only chosen pages, while keeping the original document available.
  • JPG to PDF — Package photographs or scanned JPG pages into a PDF that is easier to share and print in order.
  • PDF to JPG — Export PDF pages as pictures for previews, presentations or services that accept images instead of PDFs.
  • PDF to Text — Reuse the existing text in a PDF for notes, searching or plain-text editing.
  • Watermark PDF — Mark a document as Draft, Sample or with a visible ownership label so readers can see its intended use.
  • Protect PDF — Add a password to a PDF before sharing a copy that should require a password to open.
  • Unlock PDF — Create an unlocked working copy of a protected PDF that you are authorized to access, so it can be used in other tools.
  • Edit PDF — Add text, images and drawn marks to a PDF for simple corrections or notes on top of the existing page.
  • Fill & Sign PDF — Fill a non-interactive form with text, dates, checkmarks and a visible signature without printing it first.
  • Rename PDF — Give a downloaded PDF a descriptive filename so it is easier to identify, sort and share.
  • Repair PDF — Try rebuilding a PDF that can still be read but behaves inconsistently in a reader or another tool.
  • Resize PDF — Change the paper dimensions of PDF pages, for example to prepare a document for a standard print size.
  • Crop PDF — Trim visible margins around a PDF page to focus attention on its useful content.
  • Flatten PDF — Make existing form entries part of the page so recipients see the completed form without editing those fields.
  • Remove Metadata — Clear common document properties such as title, author and keywords before distributing a copy.
  • Extract Images — Create PNG pictures of PDF pages for previews or reuse as page images.
  • Grayscale PDF — Create a grey-toned version of colour pages for a consistent monochrome appearance.
  • Page Numbers — Add a consistent visible page sequence to handouts, reports or documents assembled from multiple files.
  • Header & Footer — Repeat a document label, short title or reference at the top or bottom of your pages.
  • Alternate & Mix PDF — Interleave two PDFs, such as separately scanned front and back sides, into one reading sequence.
  • Split PDF by Size — Break a large PDF into smaller page groups for easier transfer or a size-limited workflow.
  • Split PDF by Text — Separate a document at pages containing a repeated heading or marker, such as the start of a new section.
  • Split PDF in Half — Divide a document into two consecutive page groups with a single operation.
  • Delete Annotations — Remove annotation objects from a copy of a PDF when you want a cleaner document for review or sharing.
  • Edit PDF Metadata — Update document properties so the PDF is easier to identify in compatible readers and document systems.
  • Bates Numbering — Add a consistent reference identifier to every page in a document set so pages can be referred to unambiguously.
  • N-Up PDF — Place several source pages on a single output sheet to make compact handouts or overview copies.
  • Flip PDF — Mirror pages horizontally or vertically when preparing a reversed image or correcting mirrored source material.
  • Deskew PDF — Straighten slightly tilted scans so lines of text are easier to read and better prepared for OCR.
  • Encrypt PDF — Use separate opening and owner passwords, plus the available permission settings, when preparing a protected PDF copy.
  • PNG to PDF — Combine PNG screenshots, diagrams or scanned images into a PDF for convenient viewing and distribution.
  • Scan to PDF — Turn camera captures or uploaded page photos into a PDF directly in the browser.
  • Create PDF Forms — Add interactive fields to an existing form so recipients can enter information in a compatible PDF reader.
  • PDF Bookmarks — Create navigation entries that help readers jump to important pages in a long PDF.
  • Organize PDF — Reorder a PDF into a logical reading sequence and use the available page controls to prepare a clean final copy.