Inkside API
Render .inkside documents (Markdown, LaTeX math, tables and precomputed drawings) in handwriting, as GoodNotes notebooks and PDFs.
API keys are available on request. Write to hello@inkside.app from your account's address and say what you are building.
Authentication
Send your key as Authorization: Bearer ink_…. Keys act for their account; keep them on your server.
Fair use
Inkside is free: 20 files and 120 pages a day, up to 20 pages each. 20 / 60 / 60 per minute (render / preview / check).
Endpoints
POST
/api/v1/renderRender a document into a fileCounts one file and its pages against the day's fair-use limits. A document with errors is refused (422) with its diagnostics.
POST
/api/v1/checkCheck a documentDiagnostics with lines and fixes, the page count and missing characters. No file, not counted.
POST
/api/v1/previewPreview a documentThe first 6 pages as SVG (PDF points). Not counted as files; limited per minute.
GET
/api/v1/handwritingsList handwritingsThe account's own handwritings, then the presets. Name one in a document's header: `font: caveat`.
POST
/api/v1/handwritingsImport a handwritingImports a filled-in Inkside template (GoodNotes notebook, at most 12 MB) as the request body. Templates: https://inkside.app/templates/inkside-template-en.goodnotes and -de.goodnotes.
PATCH
/api/v1/handwritings/{id}Rename an own handwritingDELETE
/api/v1/handwritings/{id}Delete an own handwritingGET
/api/v1/handwritings/{id}/sample.svgA specimen of a handwritingGET
/api/v1/componentsSearch drawing componentsPrecomputed drawing components for ```draw blocks: how to use each one, never how it is drawn.
GET
/api/v1/components/{name}Get a drawing componentGET
/api/v1/usageToday's fair-use countersGET
/api/v1/formatThe .inkside formatThe format reference as Markdown: header fields, Markdown, math, tables, ```draw and the other figure blocks.
Example
curl https://inkside.app/api/v1/render \
-H "Authorization: Bearer $INKSIDE_KEY" \
-H "Content-Type: application/json" \
-d '{"format": "pdf", "document": "---\nfont: caveat\ntitle: Notes\n---\n# Hello\n\n$E = mc^2$"}' \
-o notes.pdfWebsite sessions and ChatGPT links only work in the website and in ChatGPT. Using them elsewhere, faking a client or sharing keys suspends the account.