> ## Documentation Index
> Fetch the complete documentation index at: https://developers.gonitro.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> Latest Nitro API product updates, new endpoints, and announcements.

<Update label="September 2026">
  Improved endpoints:

  Conversions

  * [MS Office to PDF](https://developers.gonitro.com/docs/api-reference/platform/conversions/mstopdf) — target format is now selected with `method=to-pdf` instead of `params.to`.
  * [Image to PDF](https://developers.gonitro.com/docs/api-reference/platform/conversions/imgtopdf) — target format is now selected with `method=to-pdf` instead of `params.to`.
  * [Miscellaneous to PDF](https://developers.gonitro.com/docs/api-reference/platform/conversions/misctopdf) — target format is now selected with `method=to-pdf` instead of `params.to`.
  * [PDF to MS Office](https://developers.gonitro.com/docs/api-reference/platform/conversions/pdftoms) — target format is now selected with `method=to-docx`, `to-xlsx`, or `to-pptx` instead of `params.to`.
  * [PDF to Image](https://developers.gonitro.com/docs/api-reference/platform/conversions/pdftoimg) — target format is now selected with `method=to-png` or `to-jpeg` instead of `params.to`.
  * [PDF to PDF/A](https://developers.gonitro.com/docs/api-reference/platform/conversions/pdfa) — target format is now selected with `method=to-pdfa` instead of `params.to`; `conformance` remains a required `params` field.

  The previous `method=convert` with `params.to=<format>` remains accepted for now but is deprecated in favor of the target-driven methods above.

  Extractions

  * [Text](https://developers.gonitro.com/docs/api-reference/platform/extractions/text) — method is now `text` instead of `extract-text`.
  * [Properties](https://developers.gonitro.com/docs/api-reference/platform/extractions/properties) — method is now `properties` instead of `get-properties`.
  * [PII Bounding Boxes](https://developers.gonitro.com/docs/api-reference/platform/extractions/pii) — method is now `pii-bounding-boxes` instead of `extract-pii-bounding-boxes`.
  * [Text Bounding Boxes](https://developers.gonitro.com/docs/api-reference/platform/extractions/text-box) — method is now `text-bounding-boxes` instead of `extract-text-bounding-boxes`.
  * [Tables](https://developers.gonitro.com/docs/api-reference/platform/extractions/tables) — method is now `tables` instead of `extract-tables`.
  * [Forms](https://developers.gonitro.com/docs/api-reference/platform/extractions/forms) — method is now `forms` instead of `extract-forms`.
  * [Smart Detect Form Fields](https://developers.gonitro.com/docs/api-reference/platform/extractions/smart-detect-form-fields) — method is now `form-fields` instead of `smart-detect-form-fields`.
  * [Extract Fillable Form Data](https://developers.gonitro.com/docs/api-reference/platform/extractions/extract-fillable-form-data) — method is now `fillable-form-data` instead of `extract-fillable-form-data`.
  * [Invoices](https://developers.gonitro.com/docs/api-reference/platform/extractions/extract-invoices) — method is now `invoices` instead of `extract-invoices`.

  The previous verb-prefixed extraction method names remain accepted for now but are deprecated in favor of the plain-noun methods above.

  Deprecated endpoints:

  Sign

  * Convert File to PDF (`POST /sign/conversions`) — removed after its 1 July 2026 sunset. Use [Create Document by Envelope ID](https://developers.gonitro.com/docs/api-reference/sign/create-document-by-envelope-id), which accepts the same file types (set `contentType` in the `metadata` part for non-PDF files).
  * Get Conversion Job Status (`GET /sign/conversions/{jobID}/status`) — removed; no longer needed, as [Create Document by Envelope ID](https://developers.gonitro.com/docs/api-reference/sign/create-document-by-envelope-id) converts on upload.
  * Get Converted File by Job ID (`GET /sign/conversions/{jobID}:download-converted`) — removed; no longer needed, as [Create Document by Envelope ID](https://developers.gonitro.com/docs/api-reference/sign/create-document-by-envelope-id) converts on upload.
</Update>

<Update label="August 2026">
  Added capability:

  Sign

  * [Webhook Support on Sign API](/docs/build-nitro/sign-webhooks) — subscribe to real-time envelope lifecycle events (created, sent for signature, signed, cancelled, sealed, and more)

  Added endpoints:

  Presigned URLs

  * [Request Presigned File URLs](https://developers.gonitro.com/docs/api-reference/platform/presigned-urls/request) — generate presigned upload/download URL pairs to transfer files directly to storage, for larger files than the standard multipart upload supports.

  Webhooks

  * [List webhook configs](https://developers.gonitro.com/docs/api-reference/webhooks/list-webhook-configs-for-the-authenticated-application) — list the webhook configs of the authenticated application.
  * [Create webhook config](https://developers.gonitro.com/docs/api-reference/webhooks/create-webhook-config) — register an endpoint URL and the event types it subscribes to; returns the signing secret. The secret is shown only once, in this response — store it securely.
  * [Get webhook config by ID](https://developers.gonitro.com/docs/api-reference/webhooks/get-webhook-config-by-id) — retrieve a single webhook config.
  * [Update webhook config](https://developers.gonitro.com/docs/api-reference/webhooks/update-webhook-config) — change a config's endpoint URL or subscribed event types.
  * [Delete webhook config](https://developers.gonitro.com/docs/api-reference/webhooks/delete-webhook-config) — remove a webhook config and stop its deliveries.
  * [Send a test event](https://developers.gonitro.com/docs/api-reference/webhooks/send-a-test-event-to-a-webhook-endpoint) — deliver a test event to an endpoint URL and report its response status and latency.
  * [List supported event types](https://developers.gonitro.com/docs/api-reference/webhooks/list-supported-webhook-event-types) — enumerate the event types a config can subscribe to.

  Improved endpoints:

  All Platform endpoints

  * Default limits for asynchronous requests with remote-file (URL) input raised to **300 MB** / **2500 pages** per document (from 100 MB / 500 pages). Direct uploads and synchronous requests keep the standard 100 MB / 500 pages.

  Transformations

  * [Merge](https://developers.gonitro.com/docs/api-reference/platform/transformations/merge) — limits raised to **1.5 GB** (per file and combined) for asynchronous requests with remote-file (URL) input. Other request modes keep the standard limits.
  * [Merge](https://developers.gonitro.com/docs/api-reference/platform/transformations/merge) — now validates that requests contain no more than 25 input files, and that their combined size does not exceed the 100 MB per-request limit.
  * [Watermark](https://developers.gonitro.com/docs/api-reference/platform/transformations/watermark) — now validates that requests contain no more than 25 input files, and that their combined size does not exceed the 100 MB per-request limit.

  Generations

  * [Fill Forms](https://developers.gonitro.com/docs/api-reference/platform/generations/fill-forms) — now validates that requests contain no more than 25 input files, and that their combined size does not exceed the 100 MB per-request limit.
</Update>

<Update label="July 2026">
  Added endpoints:

  Extractions

  * [Extract Fillable Form Data](https://developers.gonitro.com/docs/api-reference/platform/extractions/extract-fillable-form-data) — extract the field data of a PDF's existing fillable form (AcroForm) — names, current values, field types, and positions — as JSON, XFDF, FDF, or CSV.

  Improved endpoints:

  Extractions

  * [Get Properties](https://developers.gonitro.com/docs/api-reference/platform/extractions/properties) — the response now includes `pageCount`, the document's total number of pages.

  Transformations

  * [Redact](https://developers.gonitro.com/docs/api-reference/platform/transformations/redact) — each redaction now accepts an optional `label` rendered onto the redaction box in the output (for example, the reason for the redaction).
  * [Split](https://developers.gonitro.com/docs/api-reference/platform/transformations/split) — limits raised to **500 MB** / **3000 pages** for asynchronous requests with remote-file (URL) input. Other request modes keep the standard 100 MB / 500 pages.
</Update>

<Update label="June 2026">
  Added endpoints:

  Extractions

  * [Smart Detect Form Fields](https://developers.gonitro.com/docs/api-reference/platform/extractions/smart-detect-form-fields) — detect where fillable form fields should be placed in a PDF and return their bounding boxes as JSON.

  Transformations

  * [Compress](https://developers.gonitro.com/docs/api-reference/platform/transformations/compress) — reduce a PDF's file size. Takes no options and always produces the smallest file; use [Optimize](https://developers.gonitro.com/docs/api-reference/platform/transformations/optimize) for control over the size/quality trade-off.

  Generations

  * [Fill Forms](https://developers.gonitro.com/docs/api-reference/platform/generations/fill-forms) — generate PDF document with filled form fields.
  * [Create Fillable Forms](https://developers.gonitro.com/docs/api-reference/platform/generations/create-fillable-forms) — write detected form fields into a PDF as a real AcroForm, returning a fillable PDF.

  Improved endpoints:

  Generations

  * [Fill Forms](https://developers.gonitro.com/docs/api-reference/platform/generations/fill-forms) — now accepts XFDF and FDF data files in addition to CSV and JSON.
</Update>

<Update label="May 2026">
  Added endpoints:

  Transformations

  * [Watermark](https://developers.gonitro.com/docs/api-reference/platform/transformations/watermark) — add text or image watermarks to one or more pages of a PDF. Useful for marking documents as drafts, confidential, or applying branding overlays.
  * [Optimize](https://developers.gonitro.com/docs/api-reference/platform/transformations/optimize) — optimise a PDF for a specific use case: `web` (linearises for fast browser loading), `print` (preserves full resolution and colour profiles), or `minimal` (aggressive file-size reduction without visible quality loss).
  * [OCR](https://developers.gonitro.com/docs/api-reference/platform/transformations/ocr) — apply Optical Character Recognition to scanned or image-based PDFs, producing a searchable, text-selectable output document.

  Extractions

  * [Invoice](https://developers.gonitro.com/docs/api-reference/platform/extractions/extract-invoices) — extract structured invoice data from a PDF, including vendor details, line items, quantities, unit prices, totals, tax amounts, and payment terms.

  Conversions

  * [PDF to PDF/A](https://developers.gonitro.com/docs/api-reference/platform/conversions/pdfa) — convert a PDF to the PDF/A archival format for long-term preservation and compliance. Supports conformance levels PDF/A-1b, PDF/A-2b, and PDF/A-3b.

  Additional improvements:

  * Platform API file size limit increased from 25MB to **100MB** per request
  * Platform API page count limit increased from 200 to **500** pages per individual document
</Update>

<Update label="March 2026">
  Improved endpoints:

  * [Create Document by Envelope ID](https://developers.gonitro.com/docs/api-reference/sign/create-document-by-envelope-id) endpoint can take multiple file types

  Deprecated endpoints:

  * Convert File to PDF replaced by [Create Document by Envelope ID](https://developers.gonitro.com/docs/api-reference/sign/create-document-by-envelope-id)
  * Get Converted File by Job ID replaced by [Create Document by Envelope ID](https://developers.gonitro.com/docs/api-reference/sign/create-document-by-envelope-id)
  * Get Conversion Job Status replaced by [Create Document by Envelope ID](https://developers.gonitro.com/docs/api-reference/sign/create-document-by-envelope-id)
</Update>

<Update label="February 2026">
  Added endpoints:

  Sign

  * [Download sealed document by ID](https://developers.gonitro.com/docs/api-reference/sign/download-sealed-document-by-id)

  Transformations

  * Compress
  * [Flatten](https://developers.gonitro.com/docs/api-reference/platform/transformations/flatten)
  * [Rotate](https://developers.gonitro.com/docs/api-reference/platform/transformations/rotate)
  * [DeletePages](https://developers.gonitro.com/docs/api-reference/platform/transformations/delete)
  * [Split](https://developers.gonitro.com/docs/api-reference/platform/transformations/split)
  * [Merge](https://developers.gonitro.com/docs/api-reference/platform/transformations/merge)
  * [Redact](https://developers.gonitro.com/docs/api-reference/platform/transformations/redact)
  * [Set Properties](https://developers.gonitro.com/docs/api-reference/platform/transformations/properties)
  * [Protect](https://developers.gonitro.com/docs/api-reference/platform/transformations/protect)
  * [Unprotect](https://developers.gonitro.com/docs/api-reference/platform/transformations/unprotect)

  Extractions

  * [Text](https://developers.gonitro.com/docs/api-reference/platform/extractions/text)
  * [Forms](https://developers.gonitro.com/docs/api-reference/platform/extractions/forms)
  * [Tables](https://developers.gonitro.com/docs/api-reference/platform/extractions/tables)
  * [PII Bounding Boxes](https://developers.gonitro.com/docs/api-reference/platform/extractions/pii)
  * [Text Bounding Boxes](https://developers.gonitro.com/docs/api-reference/platform/extractions/text-box)
  * [Properties](https://developers.gonitro.com/docs/api-reference/platform/extractions/properties)

  Conversions

  * [PDF to Office](https://developers.gonitro.com/docs/api-reference/platform/conversions/pdftoms)
  * [Office to PDF](https://developers.gonitro.com/docs/api-reference/platform/conversions/mstopdf)
  * [PDF to Image](https://developers.gonitro.com/docs/api-reference/platform/conversions/pdftoimg)
  * [Image to PDF](https://developers.gonitro.com/docs/api-reference/platform/conversions/imgtopdf)
</Update>

<Update label="January 2026">
  Added endpoints:

  * [Update field by ID](https://developers.gonitro.com/docs/api-reference/sign/update-field-by-id)

  Improved endpoints:

  * [Create fields(s) by document ID](https://developers.gonitro.com/docs/api-reference/sign/create-fields-by-document-id) endpoint can take multiple fields now
</Update>

<Update label="December 2025">
  Added endpoints:

  * [Delete field by ID](https://developers.gonitro.com/docs/api-reference/sign/delete-field-by-id)
  * [Delete fields by IDs](https://developers.gonitro.com/docs/api-reference/sign/delete-fields-by-field-ids)
  * [Download audit trail of envelope](https://developers.gonitro.com/docs/api-reference/sign/download-audit-trail-of-envelope)
  * [Update participant by ID](https://developers.gonitro.com/docs/api-reference/sign/update-participant-by-id)
  * [Delete participant by ID](https://developers.gonitro.com/docs/api-reference/sign/delete-participant-by-id)
  * [Delete participants by IDs](https://developers.gonitro.com/docs/api-reference/sign/delete-participants-by-participant-ids)
  * [Reorder documents for envelope](https://developers.gonitro.com/docs/api-reference/sign/reorder-documents-by-envelope-id)
  * [Update document by ID](https://developers.gonitro.com/docs/api-reference/sign/update-document-by-id)
</Update>

<Update label="November 2025">
  Added endpoints:

  * [List fields for envelope](https://developers.gonitro.com/docs/api-reference/sign/list-fields-by-document-id)

  Improved endpoints:

  * [Create participant(s) for envelope](https://developers.gonitro.com/docs/api-reference/sign/create-participants-by-envelope-id) endpoint can take multiple participants now

  Additional improvements:

  * Emails sent to api owner are now supressed
  * Emails sent for signers/reviewers will show the app name instead of the integration email
  * Improved email parsing to correctly decode special characters
</Update>

<Update label="October 2025">
  Added endpoints:

  * [Delete envelope by ID](https://developers.gonitro.com/docs/api-reference/sign/delete-envelope-by-id)
  * [Cancel envelope by ID](https://developers.gonitro.com/docs/api-reference/sign/cancel-envelope-by-id)
  * [Send reminders for envelope](https://developers.gonitro.com/docs/api-reference/sign/send-reminders-for-envelope)
</Update>

<Update label="September 2025">
  First version of public-api
</Update>


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