Master PDF Editor

editing PDF documents in the Master PDF Editor desktop application, where the manual says an existing text object is edited by selecting it with the Edit Document or Edit Text tool and double-clicking it, that text objects can be inserted with Insert Text and formatted text with Insert Formatted Text, that font name, size, colour and style are changed in the Object Inspector and that formatted text supports formatting, styles and alignment; it documents selecting and modifying an image object, inserting images in SVG TIFF JPEG BMP PNG and PPM formats, moving and resizing images, and states that a PDF document consists of PDF objects and that editing a document means editing properties of those objects, with selection tools for documents, text, forms and images and an Edit Forms mode, and it documents creating, editing and filling interactive form fields with form settings in the Object Inspector; the same manual states the limits, that changing attributes for only one word requires splitting the text object into several, and that editing can fail with the message This font doesn't contain these characters.

Try choosing another font, because only used font characters are embedded, and no text reflow, layout preservation or replacement of text in image-only or scanned pages is claimed, with OCR a separate job

opening and viewing PDF documents in the Master PDF Editor desktop application, with opened files shown as tabs in the view area; not a standalone reader and not web or mobile

merging and splitting PDF files in Master PDF Editor, where the manual says the Merge PDF Files function merges and systematizes multiple separate PDF documents into a single file through Document Insert Pages (Ctrl+Shift+I), adding files or folders of PDF or image files to a list, rearranging them with the Up and Down buttons in the order their contents must follow and specifying a page range to import from each document; the same page documents the Extract Pages options that save selected pages as a single PDF, by page range or as multiple files, with an option to export bookmarks pointing at those pages, an option to delete pages after extracting and a note that page extraction may be restricted by the document owner, and it documents splitting a document by number of pages or file size, with a separate page documenting creation of a new PDF from PDF, SVG, SVGZ, TIF, TIFF, PNG, JPG, JPEG, BMP and PPM files, separately or as whole folders, sorted by add order, with page selection from multi-page files and a specified insertion position, and no claim that signatures, forms or annotations are preserved across documents

securing PDF documents in Master PDF Editor, where the manual lists four PDF security instruments, encryption with a password, encryption with a certificate, signing with a certificate and redacting a PDF document; it says a password is set through File Properties and the Security tab, that a document uses no encryption by default, that there are two password types, a password to open the document and a permission password that allows only the selected actions and prohibits all others, for example allowing viewing and commenting but not printing or editing, and that deselecting actions disables them; it documents encrypting a document for a list of valid recipients whose certificates are imported into the local certificate storage and requires a certificate that includes a public key; redaction is documented separately as permanent removal of the redacted data, and signing is the separate sign job, with no encryption algorithm, key length, owner versus user password detail beyond the two password types, or certification authority claim made here

converting PDF documents to other formats and building PDFs from other files with Master PDF Editor, where the manual documents Export Pages to Images with BMP, JPEG, PNG and TIFF output, a page range, per-page file naming for multipage export, a JPEG quality option and TIFF compression methods, Export Pages to Word with a page range and a fill vertical space option, export to TXT, CSV and Excel on their own pages, and Convert to PDF/A with selectable levels PDF/A-1a, 1b, 2a, 2b, 2u, 3a, 3b and 3u with the manual describing structure and visual integrity differences between them; it documents creating a new PDF from PDF, SVG, SVGZ, TIF, TIFF, PNG, JPG, JPEG, BMP and PPM files with ordering, page selection and insertion position, and the product page documents the Windows-only virtual PDF printer for printing from other applications; the direction is one-way export or import, and no round-trip Office editing, editing of the exported Word or Excel file, or conversion fidelity guarantee is claimed

signing PDF documents with a certificate in Master PDF Editor, where the manual documents checking digital signatures, creating new ones and signing documents with a digital certificate, explains that a digital certificate verifies identity and is issued by a Certificate Authority and that a signing certificate is required; it documents adding a hidden signature field through Forms Invisible signature with a certificate selected in Sign As, which is visible in the Signature tab but not on the page, and notes that Master PDF Editor does not provide any digital certificates so one must be acquired from a certificate authority or created self-signed; it documents batch signing of several documents from a list built with Add Files, Add Folder or Add Open Files; and it explicitly says that inserting initials is not to be confused with a digital signature and that, unlike a digital signature, initials do not guarantee authenticity or prevent unauthorized changes, so drawn, typed or initial-based marks are not claimed as digital signatures here

running optical character recognition in Master PDF Editor, where the manual says OCR converts images containing text to editable PDF text which supports search, copying, editing and other PDF text functionality, that recognition can only be performed if it is not locked in the document permissions, that it starts from Document OCR, that the dialog sets a page range and one or more languages, that additional languages are installed as tesseract traineddata files into the directory given in the OCR settings, that the language list begins empty and languages are added with Install languages, and that selecting the minimal number of languages is recommended; the engine is named as tesseract in the manual, and no language count, accuracy figure or hosted OCR claim is made

reducing the size of PDF documents in Master PDF Editor, where the manual says optimization removes unnecessary and unused elements and compresses images and forms to reduce the overall size, through File Save Optimized As (Ctrl+Alt+S), with options including removing unused elements, flattening form fields and merging layers, and warns that optimizing with some compression methods may damage images and lead to poor printing quality; it documents Document Optimize Scanned Pages with a page range and adaptive image compression choosing JPEG or ZIP for colour and grayscale images and ZIP or CCITT Group methods for black and white images, with advanced filters, and no size reduction percentage or lossless guarantee is claimed