Limits

Resources

Limit type

Limit

PDF format of a signable Document

Any PDF version

PDF format of an already signed Document that you want to sign again

PDF 1.6 and above

PDF format of an Attachment

Any PDF version

Size of one uploaded Document

50 MB

Documents per Signature Request

50

Signers per Signature Request

100 (5 in Sandbox during the API trial)

Approvers per Signature Request

10 (5 in Sandbox during the API trial)

Followers per Signature Request

100 (5 in Sandbox during the API trial)

Fields per Signature Request

500

Document formats accepted in the Signature Request

PDF, docx

Signer Document Requests per Signature Request

10

Size of Signer Document Requests files

25 MB

Labels per Signature Request

50

Number of pages for a document including at least one Smart Anchor

150 pages
Be careful, the more Smart Anchors you have in a document, the more time your request will take.

The default validity of a signature_link

48 hours
However, this duration can be modified (minimum 1 hour and maximum 72 hours) by making a request to the support.

Electronic seal fields per seal

200

Electronic seal image size

500 KB

Electronic seal document size

50 MB

Electronic seal images

50

Workflow Session:
Number of Actions in an Action Group

10

Rate limit

A rate limit policy covers all the endpoints of the API.

The sandbox and production environments have different rate limit.

EnvironmentRequests/minRequests/hour
Sandbox30 requests/min200 requests/hour
Production60 requests/min1200 requests/hour
📘

An additional daily limit of 100 Signature Requests applies in the Sandbox environment during the API trial period.

Your remaining calls quotas are sent in all the API responses through X-Ratelimit-Limit-Remaining-Minute and X-Ratelimit-Limit-Remaining-Hour HTTP headers :

HTTP/2 429 
< x-ratelimit-limit-hour: 1200
< x-ratelimit-limit-minute: 60
< x-ratelimit-remaining-hour: 1197
< x-ratelimit-remaining-minute: 59

If one of your calls is rejected because a rate limit threshold is hit, you will receive the status code 429 and "too many requests" as explanation.

ℹ️

The rate limit policy can be customised to fit your needs

If your implementation respects our standards (mainly use Webhooks instead of regular polling), you can request a change in your Rate-limit.

Please fill out this form.

Our support team will review your request and work with you to find the best solution.

Please keep in mind that:

  • It may take few days to treat your request
  • It is required to have an existing API Key in the targeted environment (sandbox or production)