ONLYOFFICE PDF Editor vs PDF Chain

ONLYOFFICE PDF Editor lets users view, edit, annotate, create, and convert PDF files to DOCX online. It can revise text and insert or adjust tables, shapes, images, SmartArt, charts, hyperlinks, and pages. Annotation tools include highlighting, underlining, strikethrough, comments, freehand drawings, and stamps. Users can create and fill forms with text areas, images, combo boxes, drop-down lists, and check boxes. Teams can co-edit in real time or paragraph-locking mode and use comments, built-in chat, Telegram, and Jitsi calls. The editor can extract text from scanned PDFs, connect AI assistants, and permanently remove selected material with redaction. Free desktop apps support offline editing and conversion on Windows, Linux, and macOS; free Documents apps support PDF viewing on iOS and Android. It is available on web, Windows, Linux, macOS, iOS, Android, and self-hosted deployments. A free plan and trial are listed, with paid pricing from $20/mo. Security options include AES-256 encryption, JWT access protection, granular permissions, and restrictions on downloading, printing, and copying.

PDF Chain has no write-up on Specifiction yet; its figures are above.