The pro-grade PDF editor that never sends your file to a server.
Ultra PDF Editor combines pdf.js rendering, pdf-lib exports, and an accessible React interface to deliver precision annotations without any cloud backend. Load confidential documents, annotate, sign, and export - all locally.
- Runs 100% offline
- Offline-first
- Security-first design
- Zero uploads
- Accessibility
- WCAG 2.1 AA
Drag in any PDF (up to 500 pages). Use the toolbar to add text, draw signatures, highlight, or redact sensitive content. Export regenerates every page with your annotations flattened into the document.
- Real-time preview syncs with zoom and pan controls.
- Undo stack for annotations per page.
- Signatures stored locally for reuse; opt-in persisted via IndexedDB.
Precision tools, zero compromises
Everything runs in the browser - engineered with pdf.js 5.4.296 for rendering and pdf-lib 1.17.1 for vector-perfect export so your annotations look professional in every PDF viewer.
Smart annotations
Drop rich text boxes, sign with fluid freehand ink, or highlight and redact with precision rectangles.
Pixel-perfect exports
Ultra PDF Editor rebuilds PDFs with vector text, embedded fonts, and crisp drawing layers using pdf-lib.
Privacy and performance
All processing stays in the browser - no uploads, perfect for NDAs, HR files, medical records, and legal work.
Touch & pen ready
Optimised pointer handling delivers smooth tablet signing and markup on iPad, Surface, and Chromebooks.
Keyboard friendly
Full focus management, shortcuts, and ARIA roles keep the canvas usable for screen readers and power users.
Lightning fast load
Lazy-loaded React editor island keeps marketing pages pure HTML for near-instant First Contentful Paint.
Ready for your next NDA or HR file.
Ultra PDF Editor is designed with privacy, accessibility, and PageSpeed excellence from day one. Ship your edits with confidence - no logins, no watermarks, no surprises.