---
title: "Changes to Redact text or a PDF."
method: POST
path: "/api/filter"
---

# Changes to Redact text or a PDF.

`POST /api/filter`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 8 of 116 revisions.

- **2026-10-13** `2bb62dc90a0a`: 1 info
- **2026-10-10** `c4f85daa9208`: 16 info
- **2026-10-05** `4082c17721d8`: 8 breaking, 8 info
- **2026-09-12** `00377bbbb5be`: 1 info
- **2026-09-07** `a3bc5909807a`: 3 breaking, 8 info
- **2026-09-05** `2808259c496e`: 1 info
- **2026-08-04** `ee79a60eea42`: 1 info
- **2026-08-03** `e46672d44401`: 1 info

## Changes

- **2026-10-13** `2bb62dc90a0a`: 1 info
  - added the new optional `query` request parameter `fairness_key`
- **2026-10-10** `c4f85daa9208`: 16 info
  - added the optional property `field` to the response with the `400` status
  - added the optional property `field` to the response with the `401` status
  - added the optional property `field` to the response with the `404` status
  - added the optional property `field` to the response with the `405` status
  - added the optional property `field` to the response with the `406` status
  - added the optional property `field` to the response with the `413` status
  - added the optional property `field` to the response with the `415` status
  - added the optional property `field` to the response with the `500` status
  - added the optional property `reason` to the response with the `400` status
  - added the optional property `reason` to the response with the `401` status
  - added the optional property `reason` to the response with the `404` status
  - added the optional property `reason` to the response with the `405` status
  - added the optional property `reason` to the response with the `406` status
  - added the optional property `reason` to the response with the `413` status
  - added the optional property `reason` to the response with the `415` status
  - added the optional property `reason` to the response with the `500` status
- **2026-10-05** `4082c17721d8`: 8 breaking, 8 info
  - removed the media type `*/*` for the response with the status `400`
  - removed the media type `*/*` for the response with the status `401`
  - removed the media type `*/*` for the response with the status `404`
  - removed the media type `*/*` for the response with the status `405`
  - removed the media type `*/*` for the response with the status `406`
  - removed the media type `*/*` for the response with the status `413`
  - removed the media type `*/*` for the response with the status `415`
  - removed the media type `*/*` for the response with the status `500`
  - added the media type `application/json` for the response with the status `400`
  - added the media type `application/json` for the response with the status `401`
  - added the media type `application/json` for the response with the status `404`
  - added the media type `application/json` for the response with the status `405`
  - added the media type `application/json` for the response with the status `406`
  - added the media type `application/json` for the response with the status `413`
  - added the media type `application/json` for the response with the status `415`
  - added the media type `application/json` for the response with the status `500`
- **2026-09-12** `00377bbbb5be`: 1 info
  - added the new optional `query` request parameter `sign`
- **2026-09-07** `a3bc5909807a`: 3 breaking, 8 info
  - the request's body format changed from `byte` to `binary`
  - removed the media type `*/*` for the response with the status `503`
  - removed the media type `application/zip` for the response with the status `202`
  - api operation id `filterTextPlainAsTextPlain` removed and replaced with `filter`
  - added the media type `application/json` for the response with the status `202`
  - added the media type `application/pdf` for the response with the status `200`
  - added the media type `application/zip` for the response with the status `200`
  - added the media type `text/plain` for the response with the status `503`
  - added the non-success response with the status `403`
  - added the non-success response with the status `406`
  - added the non-success response with the status `429`
- **2026-09-05** `2808259c496e`: 1 info
  - added the non-success response with the status `404`
- **2026-08-04** `ee79a60eea42`: 1 info
  - added the non-success response with the status `415`
- **2026-08-03** `e46672d44401`: 1 info
  - added the non-success response with the status `413`

---

[Operation](https://skmtc.dev/philterd/apis/philter-api/docs/api/filter/post.md) - [API](https://skmtc.dev/philterd/apis/philter-api.md) - [Page](https://skmtc.dev/philterd/apis/philter-api/changes/api/filter/post)