DartPDF vs QPdf

DartPDF is a PDF editor that runs entirely on your device. Open any PDF to mark it up, fill in forms, sign it, redact content, rearrange pages, or edit the text and images on the page. Changes save back to the original file. Nothing is uploaded. There's no account, no sync, and no ads. Features: • Highlight, underline, strikethrough, and freehand ink • Shapes, arrows, text boxes, notes, and stamps • Edit existing text and add images • Redaction that removes the covered text and images from the file, not just from view • Fill form fields (text, checkboxes, radio buttons, dropdowns), or add your own • Drawn signatures placed anywhere, plus certificate-backed PAdES digital signatures • OCR scanned PDFs so text can be selected and searched • Reorder, delete, and export pages to a new file • Full-text search, text selection, and links • Compare two versions side by side • Open password-protected files Runs on iPhone, iPad, and Mac. Opens PDFs from the Files app, share sheets, or drag-and-drop. Light and dark themes.

QPdf is a local-first PDF workspace for phone, tablet and desktop. Your documents stay on your device. READ AND SEARCH • Fast page rendering with text selection and in-document search • Open PDFs straight from Files, email or any app that shares them ANNOTATE AND MARK UP • Highlight, underline, strike through and draw freehand • Add sticky notes, shapes, arrows and images to any page FILL AND SIGN • Type text anywhere on a page — it works the same on scanned and flattened forms as on digital ones • Draw a signature, or apply a cryptographic digital signature ORGANISE PAGES • Reorder, rotate, delete, extract and merge pages • Combine several PDFs into one • Add page numbers CREATE AND CONVERT • Build a PDF from photos • Scan paper with the camera • Add a searchable text layer with on-device OCR — pages are never uploaded PROTECT • Secure redaction produces an image-only copy and strips searchable text, interactive content, metadata and existing signatures • PDF/UA and PDF/A accessibility and archiving audits PRIVATE BY DESIGN No account. No advertising SDK. No analytics SDK. QPdf does not upload the PDFs you open. The only network request is an optional one-time OCR model download, verified against a published checksum. Free, with no subscription and no watermark.