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PDF signing & verification

We build tools that
sign, verify & secure
your documents.

Production-ready SDKs, cross-platform desktop applications, and enterprise signing tools — all built with Rust/WASM performance and bank-grade security.

trexolab — overview
org TrexoLab Solutions
focus PDF signing & verification
products 4 production-ready
stack rust, wasm, java, typescript
platforms web, desktop, server
clients 100+
security enterprise-grade
Products

Our products

Production-ready tools for PDF signing and verification.

VerifyKit

SDK / Library

Professional SDK for verifying PDF digital signatures in JavaScript and TypeScript. Rust/WASM-powered core engine — 3.7x faster than pure JS. 8-point verification model with PAdES conformance detection (B-B, B-T, B-LT, B-LTA). Embedded AATL trust store with Indian PKI and international CAs. Ships as composable React components, a zero-config vanilla JS drop-in, and a headless Node.js engine.

react 19 vanilla js node.js rust/wasm typescript
@trexolab/verifykit v0.4.3

TrexoLab PDF Signer

Desktop Application

Cross-platform desktop PDF signing application built on Java. Supports hardware DSC tokens, PFX/PKCS#12 certificates, and RFC 3161 timestamping. Full PAdES compliance with visible and invisible signature support. Runs natively on Windows, macOS, and Linux.

java cross-platform dsc tokens pfx/pkcs#12 pades
trexolab-pdf-signer stable

Trexo Edge

Integration Platform

Lightweight edge runtime for client-side PDF signing and verification. Designed to embed directly into web applications and desktop software. Provides a local API that any application can call — your documents never leave the client machine. Bridges the gap between browser-based apps and native signing capabilities.

web integration desktop embed local api client-side
trexo-edge stable

Bulk PDF Signer

Enterprise Tool

High-volume batch PDF signing for enterprise document workflows. Process thousands of PDFs in a single operation with DSC token or certificate-based signing. Built for organizations that need to sign invoices, contracts, or compliance documents at scale.

batch processing enterprise automation dsc/pfx
bulk-pdf-signer stable
Services

What we do

Beyond products — we build custom solutions.

01 / PDF Solutions

Signing, verification, and document workflow integration for your platform.

signing verification integration
02 / Software Development

Custom software from concept to deployment. Full-stack engineering.

full-stack api support
Why TrexoLab

Built different

01 Bank-grade security Advanced encryption. Global compliance standards.
02 Cross-platform Web, mobile, desktop. No compromises.
03 Client-side first Your documents never leave the browser. Privacy by design.
04 Quality without shortcuts Every feature engineered to the highest standard.
Trust

Proven track record

0
Companies
0
Documents processed
0
Uptime
0
Products

"What used to take days now takes seconds. Their dev team built us a custom dashboard our clients love."

— Operations Director, Enterprise Client
Contact

Let's talk

new_request.sh
verifykit
pdf_signer
trexo_edge
bulk_signer
custom_dev
other

Response within 24 hours.

products verifykit, pdf signer, edge, bulk
timezone UTC