documents service

PDF and document workflows: merge, split, recipe, or render pages. Browse the catalog below and pick the helpers that fit your workflow.

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Every helper runs with the same simple API key. Sign in (or create a free Dataczar account) at Dataczar Connect to issue keys in seconds, then drop the key into any `ak=` parameter and start shipping.

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Tip: reuse the same key across these helpers, or rotate keys per project from the Connect dashboard.

POSTApply a decorative background preset.

Draws a built-in background (parchment, diploma, gradients, etc.) behind selected pages. Provide a PDF via `url` or upload.

GETPOSTAdd footer text (with optional page numbers).

Anchors text to the bottom-left/center/right of selected pages. Supports optional page numbers appended to the text.

GETPOSTAdd a text header to PDF pages.

Places text at the requested top-left/top-center/top-right position. Supports GET with URL parameters or POST with JSON/multipart uploads.

POSTDrop a stamp overlay (PAID, REJECTED, etc.).

Places a stamp preset on selected pages. Presets include `paid-red`, `paid-green`, `rejected`, `fail`, `approved`, `urgent`.

POSTAdd repeating text watermarks.

Draws a text watermark using built-in presets (`confidential-diagonal`, `top-secret-stencil`, `eyes-only-centered`, `draft-outline`, `void-repeat`) or custom parameters.

POSTRun a multi-step PDF pipeline.

Accepts a PDF (`url` or upload) plus an ordered `steps` array describing actions such as `add-background`, `add-watermark`, `add-header-text`, `add-footer-text`, and `add-stamp`.

GETPOSTMerge multiple PDFs.

Concatenate PDFs referenced by `sources[]` query params or uploaded via multipart files. POST requests can also send a JSON body with `sources`.

GETPOSTGenerate a square icon from a PDF page.

Rasterizes the requested page, fits it into a square canvas (default 256×256), and returns the icon as PNG/JPG/WebP.

GETPOSTRender a PDF page as an image.

Downloads or accepts an uploaded PDF, rasterizes the requested page, and returns it as PNG/JPG/WebP output.

POSTApply a named PDF recipe.

Recipes are friendly presets that wrap the composite pipeline (e.g., `parchment-confidential`, `diploma`, `top-secret-dossier`, `paid-invoice`, `eyes-only`). Optional `overrides` or `extra_steps` arrays can tweak the defaults.

POSTSplit a PDF into page ranges.

Accepts a PDF via `url` or file upload and a `slices` expression such as `1-3,4,5-`. Returns a ZIP containing the resulting PDFs unless `dryrun` is requested.

POSTOverlay one PDF onto another.

Merges each page of an overlay PDF on top of the matching base page (or reuses the last overlay page). Accepts URLs (`base`, `overlay`) or uploaded files plus optional `pages` selectors.