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Fill a PDF form

POST 
/pdf/fill

Fills the fields of a PDF form by their full names, as /pdf/info lists them, and keeps the form fillable, or with flatten draws the values into the pages and removes the fields. A value is text for a text field, a number too, true or false for a check box, an option for a dropdown, a radio group or a check box with several on-values (/pdf/info lists them as options), and a list of options for a list box that takes several. In strict mode, the default, a name the form lacks answers 422 form_field_unknown and a value its field does not take 422 form_value_invalid, both naming the field and never the value; with strict: false both are left out and listed in the render's form.skipped. No calculation or display format of the form runs: the render's form.warnings names the fields that have one. A form that opens without a password but restricts editing is filled where its restrictions allow filling and keeps them; one that needs a password answers source_encrypted, a signed one form_signed, an XFA form form_xfa_unsupported, a hybrid one is filled through its AcroForm with its XFA part removed. Values in Chinese, Japanese or Korean drawn by flatten add about 1.3 MB of font to the file. The source is a stored PDF named as source in a JSON body, or an upload as multipart/form-data with the PDF as file (never stored). The values are never stored; the render keeps the field names. Costs 0.5 units on live keys; Starter plan and above. Needs render:create.

Request​

Responses​

The render of the filled PDF, with form saying what it filled.