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eSignature API

Enhance your software with realtime, embedded eSignature, or boost your company efficiency with programmatic access and webhooks, integrations to Office and more.

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Quick & Easy To Integrate
Never Easier

Straightforward and Accessible for Rapid Deployment

Feature Rich

Signatories, Approvers, Witnesses? We've got you. On-the-fly docs with HTML, or use powerful PDF text tagging for customisable PDF sending.

REST API

Easy to use REST API. Stable and reliable in state and in pricing. Utilise webhooks to give your customers real-time notifications

Scalable

Scale with Legalesign teams and give customers all the features immediately with accounts in the web app, until you get them coded.

Track usage with the API Dashboard

Your API dashboard contains your request and webhook logs to assist with debugging and so you can track usage.

Flexible structure that accepts HTML or PDF

Upload PDFs or create on the fly with HTML. Set text tags in PDFs to make form creation easy. The digital signature API is structured around groups/teams, simple to implement but with the flexibility to describe many organisational systems.

Embeddable PDF edit & signing

Use the API to frame the PDF edit page and the signing pages to make seamless integrations.

Create Users within the API and silo them in teams. For complex use-cases, direct them back to the app for features or edge-cases you haven't integrated yet.

What Customers Say About Legalesign API

So far, we’ve helped thousands of happy customers transform and improve their business workflows with our products.

"I am definitely planning on using the Legalesign e-Signature API again soon. I appreciated the support and attention to security."

Arthur King

Head of IT, N4Gtv.com

"Integrating Legalesign via its API into a customers solution worked flawlessly. The attention to detail within the front end of the product is great and the backend API is equally thought through. Any questions that I did have were answered very quickly and thoroughly...The quality of integration is great, and if you have specific features you need I would highly recommend partnering with Legalesign."

Trevor Gildesleeve

Cloudbase Software Inc.

"Using the Legalesign API is a breeze, sending and processing e-signed documents couldn't be easier"

James

Director of Information Systems, Ready Project

"I am definitely planning on using the Legalesign e-Signature API again soon. I appreciated the support and attention to security."

Arthur King

Head of IT, N4Gtv.com

"Integrating Legalesign via its API into a customers solution worked flawlessly. The attention to detail within the front end of the product is great and the backend API is equally thought through. Any questions that I did have were answered very quickly and thoroughly...The quality of integration is great, and if you have specific features you need I would highly recommend partnering with Legalesign."

Trevor Gildesleeve

Cloudbase Software Inc.

"Using the Legalesign API is a breeze, sending and processing e-signed documents couldn't be easier"

James

Director of Information Systems, Ready Project

Award Winning Support

Market Leaders For Three Years Running

Legalesign is recognised as the best eSignature software for mid-market support and best for customer relationships (G2 Fall Report 2022).

Awards received by Legalesign

Your trusted eSignature supplier for business.

See how eSignatures work with Your Business

Download Our Executive Summary

Unlock the business value from eSignature technology using Legalesign, the most feature-rich and secure Uk-based platform for daily business use.

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