@trupdf/annotations
Annotations
35+ types · XFDF round-trip · undo/redo · threads
Highlight, underline, sticky, freetext, ink, stamp, cloud, measurement, redaction-mark, and 25+ more annotation types — all backed by an interactive canvas layer that stays in lockstep with the annotation store.
F.01 — What you get
- XFDF wire format — round-trips losslessly with Acrobat and every spec-compliant viewer.
- PDF 1.7 / ISO 32000-2 dict-level encoding — visually identical in Chrome, Firefox, Edge, Preview.
- Stylus input with palm rejection, pressure curves, tilt, twist, coalesced events.
- Threads, replies, status, custom data — all preserved across save and export.
Next step
See it in the demo
The live demo wires this feature into a full viewer. Open any PDF and try it.