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Validate signatures

Check whether a PDF's signatures are intact, who signed, and whether it changed afterwards.

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Other tools

Organize

Merge PDFCombine several PDFs in the order you choose, with a bookmark for each file.Split PDFSplit every N pages, or into custom page ranges.Extract pagesKeep only the pages you pick, as a new PDF.Delete pagesRemove the pages you don't need.Rotate PDFRotate all or selected pages by 90°, 180° or 270°.Reverse pagesFlip the page order — handy for scans.Reorder pagesType the new page order, like 3,1,2. Pages left out are removed.Insert blank pagesInsert one or more blank pages, sized like the page before.Alternate mergeInterleave two PDFs scanned front and back into one (1, 1, 2, 2…).Combine into one pageStack every page top to bottom into one tall page.Split pages in halfCut every page in two — great for scanned book spreads.Overlay PDFLay the second PDF over every page of the first (letterheads, form backgrounds).Page labelsSet the page numbers readers show, e.g. i, ii for the front matter and 1, 2 for the body.Crop PDFTrim the margins around your pages (in millimetres).Organize pages (visual)Drag thumbnails to reorder, turn and delete pages — what you see is what you get.PDF readerPage through, zoom and search a PDF right in your browser — nothing to install.Rotate by any angleTurn page content by any angle (say 1.5°) without turning it into an image.Split by file sizeCut a large PDF into files no bigger than a limit — for e-mail or uploads.

Layout & print

N-up (pages per sheet)Put 2, 4, 6, 9 or 16 pages on each sheet to save paper.Make a bookletImpose pages for a saddle-stitched booklet: print double-sided and fold.Poster tilingEnlarge pages across several sheets to assemble a poster.Resize pagesScale every page to one paper size such as A4 or Letter.Split two columnsFind the gutter of two-column pages and cut each into a left and a right page — easier on phones.E-reader optimizeFit pages to an e-reader screen in high-contrast grey.ID photo sheetFill a sheet with copies of a portrait photo, with cut lines, ready to print.Reflow for mobileRe-lay the text in reading order for a phone or tablet screen — bigger text, no side-scrolling.Book cover templateWork out the spine width from the page count and paper, and make a cover template with bleed and folds.Booklet planList which pages go on each side of each sheet and how to fold — print your own booklet right first time.

Edit & mark up

Add page numbersNumber every page — choose the position, format and starting number.Header & footerAdd text, page numbers and dates above or below the page content.Add watermarkStamp diagonal text across your pages, with color, opacity and angle.Background colorGive your pages a background color.Bates numberingSequential legal numbering such as DOC-000001.Remove watermarkRemove watermarks, headers/footers and backgrounds added by this tool (or Acrobat).Edit document infoView and change the PDF's title, author, subject and keywords.Flatten PDFBurn form fields and comments into the page so they can't be changed.Convert to grayscaleTurn the PDF black-and-white to save ink.Invert colorsSwap light and dark — a dark mode for reading.Add attachmentsEmbed any files in a PDF. Put the PDF first, then the files to attach.Add bookmarksOne bookmark per line as “Title | page”; two leading spaces nest it one level deeper.Auto bookmarksFind chapter and section headings by their font size and bookmark them.Link URLsTurn web addresses and e-mail addresses in the text into clickable links.Remove linksDelete every hyperlink in the document.Add image / signaturePlace an image (signature, stamp, logo) on your pages. Put the PDF first, then the image.Table of contentsAdd a contents page built from the bookmarks; each line links to its page.Add QR codePut a QR code (URL, text, contact) on your pages — scan it with any phone.Change text colorMake all the text on your pages one color (say black, for printing).Add textPut text (any language, several lines) at a position measured from the top-left corner.Text to outlinesTurn text into shapes: no missing fonts at the printer, no copying, looks exactly the same.PDF layersShow or hide a PDF's layers (dimensions on drawings, map overlays…).Link citationsLink [1], [2] citation markers to the reference list at the end.Draw on PDFDraw, circle and sign right on the page with mouse, touch or pen.

Forms

Fill PDF formThe form's fields appear right here to fill in; optionally flatten afterwards.Reset formClear every form field back to empty or its default.Export form fieldsList every field's name, type and value (JSON).Create PDF formDetect blanks and boxes and turn them into fillable fields — a plain PDF becomes a form.Add signature fieldsFind “Signature” / “Sign here” labels and add signable signature fields next to them.Form calculationMake a field sum, average or multiply others (e.g. total = price + qty), updated as the form is filled.

Security & privacy

Encrypt PDFProtect your document with an AES-256 open password.Remove passwordEnter the password once, save a PDF that opens without it.Remove metadataStrip the title, author, creator tool and other hidden information.Restrict permissionsSet a permissions password that blocks printing, copying or editing (no password to open).Remove restrictionsLift printing, copying and editing restrictions (needs the open password if there is one).Redact PDFTruly remove text and what's under it, then black it out — names, phone numbers, e-mails, IDs.Sanitize PDFRemove metadata, JavaScript, hidden layers, attachments and comments that could leak information.Digital signatureSign with a digital certificate — any later change breaks the signature. Create a new digital ID, or upload your .p12/.pfx (ECDSA certificates for now).Timestamp PDFGet a trusted RFC 3161 timestamp proving the document existed, unchanged, at this time. Only a hash of the document is sent.

Optimize

Compress PDFDownsample and recompress images to make the file smaller.Remove annotationsDelete sticky notes, highlights, shapes and other comments.Remove blank pagesFind and delete blank pages automatically — ideal for scans.Repair PDFFix damaged PDFs that won't open or have a broken structure.Rasterize PDFTurn every page into an image, so nothing can be copied or edited.Compare PDFsFind text added, deleted and changed between two versions: a report plus highlighted differences.Convert to PDF/AConvert to PDF/A for long-term archiving.OCR (text recognition)Turn scans and photo PDFs into searchable, copyable text — Traditional & Simplified Chinese, English, Japanese, Korean.Deskew scansDetect how much scanned pages lean and straighten them, losslessly.Enhance scansMake faint pencil, ballpoint signatures and handwriting legible, or go pure black-and-white.Fast web view (linearize)Reorder the PDF so large files show their first page on the web before the rest downloads.

Convert to PDF

Image to PDFTurn JPG, PNG, WebP, GIF, BMP or TIFF images into a PDF, one image per page.Text to PDFTurn a plain-text file into a neatly laid-out PDF.Word to PDFConvert Word (.docx) documents to PDF, keeping headings, paragraphs, lists and table text.Markdown to PDFTurn Markdown notes into a tidy PDF: headings, lists, quotes, code and tables.HTML to PDFConvert the text of a web page file (.html) to PDF.EPUB to PDFConvert an e-book (.epub) to PDF, chapter by chapter.JSON to PDFPretty-print JSON data into a PDF for printing and sharing.CBZ to PDFTurn a comic book archive (.cbz) into a PDF, pages in order.RTF to PDFConvert the text of an RTF document to PDF.XPS to PDFConvert the text of Windows XPS documents to PDF, in place.FB2 to PDFConvert FictionBook (.fb2) e-books to PDF.Excel to PDFTurn each sheet of an Excel (.xlsx) workbook into a ruled table; wide tables go landscape.CSV to PDFTurn CSV data into a tidy table PDF.PowerPoint to PDFOne page per slide (.pptx), with text boxes and pictures where they were.SVG to PDFConvert SVG to a vector PDF — sharp at any zoom, text stays searchable.PSD to PDFConvert a Photoshop file's composite image to PDF.MOBI to PDFConvert Kindle MOBI / PRC e-books (without DRM) to PDF.HEIC to PDFTurn iPhone HEIC photos into a PDF, one photo per page.DjVu to PDFConvert DjVu scanned books to PDF; their text layer becomes searchable text.

Convert from PDF

PDF to PNGRender every page as a high-quality PNG image.PDF to JPGRender every page as a JPG image.PDF to TIFFRender pages as TIFF images for print and archiving.Extract imagesPull out every original image embedded in the PDF.PDF to textExtract all text in reading order as a .txt file.PDF to WordConvert to an editable Word (.docx) document with paragraphs and images.PDF to PowerPointEach page becomes a slide (.pptx).PDF to HTMLConvert to a web page, keeping paragraphs and images.PDF to MarkdownConvert to Markdown — great for notes or feeding to AI.PDF to RTFConvert to RTF, which every word processor opens.PDF to WebPRender pages as small, high-quality WebP images.PDF to BMPRender pages as BMP bitmaps.PDF to GIFRender pages as GIF images.Extract attachmentsSave every file embedded in the PDF.Page dimensionsList every page's size (pt, mm) and rotation as CSV.PDF to JSONExport document info, pages, bookmarks, fonts and form fields as structured data.PDF to ExcelFind the tables in a PDF and convert them to Excel (.xlsx), numbers as real numbers.PDF tables to CSVSave every table in the PDF as a CSV file (opens correctly in Excel, CJK included).PDF to CBZTurn a PDF into a .cbz file for comic readers.PDF to ZIPSplit every page into its own PDF or image, packed in one ZIP.Export commentsExport the PDF's comments as CSV (opens in Excel), XFDF, FDF or text.Invoice parserFind the invoice number, date, total, currency and tax ID automatically (JSON).PDF to SVGTurn each page into an SVG — sharp at any zoom and editable in design tools (text as outlines, images embedded).Extract vector graphicsPull out only the lines, shapes and charts as SVG (no text, no photos).