docs: organize tool pages by modality under /tools/<modality>/

Move all 157 tool pages into image/video/audio/pdf/data subfolders so URLs read /tools/<modality>/<id> (e.g. /tools/image/crop). Nest the image sub-categories under an Image group in the sidebar so the nav reads by modality. Add public/_redirects (301, clean + .html forms) mapping every old flat /tools/<id> URL to its new path so inbound links keep working. Rewrite all internal /tools links. Verified with a clean docs build (no dead links).
2026-08-03 07:46:42 +02:00 · 2026-06-18 14:12:28 +08:00
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+---
+description: Edit EXIF, IPTC, GPS, and XMP metadata fields in images without re-encoding pixels.
+---
+
+# Edit Metadata
+
+Edit image metadata fields including EXIF, IPTC, GPS coordinates, dates, and keywords. Uses ExifTool under the hood, so metadata is written in-place without re-encoding pixels, preserving full image quality.
+
+## API Endpoints
+
+### Edit Metadata
+
+`POST /api/v1/tools/image/edit-metadata`
+
+Writes metadata fields to the image and returns the modified file.
+
+### Inspect Metadata
+
+`POST /api/v1/tools/image/edit-metadata/inspect`
+
+Returns the full metadata from the image via ExifTool as JSON. Does not modify the image.
+
+## Parameters (Edit)
+
+| Parameter | Type | Required | Default | Description |
+|-----------|------|----------|---------|-------------|
+| title | string | No | - | Image title (XMP/EXIF) |
+| author | string | No | - | Author name |
+| artist | string | No | - | Artist name (EXIF Artist tag) |
+| copyright | string | No | - | Copyright notice |
+| imageDescription | string | No | - | Image description (EXIF) |
+| software | string | No | - | Software tag |
+| dateTime | string | No | - | EXIF DateTime value |
+| dateTimeOriginal | string | No | - | EXIF DateTimeOriginal value |
+| setAllDates | string | No | - | Set all date fields at once |
+| dateShift | string | No | - | Shift all dates by offset (format: `+HH:MM` or `-HH:MM`) |
+| clearGps | boolean | No | `false` | Remove all GPS data |
+| gpsLatitude | number | No | - | Set GPS latitude (-90 to 90) |
+| gpsLongitude | number | No | - | Set GPS longitude (-180 to 180) |
+| gpsAltitude | number | No | - | Set GPS altitude in meters |
+| keywords | string[] | No | - | Keywords/tags to add or set |
+| keywordsMode | string | No | `"add"` | How to handle keywords: `add` (append) or `set` (replace) |
+| fieldsToRemove | string[] | No | `[]` | List of specific metadata field names to remove |
+| iptcTitle | string | No | - | IPTC Object Name |
+| iptcHeadline | string | No | - | IPTC Headline |
+| iptcCity | string | No | - | IPTC City |
+| iptcState | string | No | - | IPTC Province/State |
+| iptcCountry | string | No | - | IPTC Country |
+
+## Example Request
+
+Set author and copyright:
+
+```bash
+curl -X POST http://localhost:1349/api/v1/tools/image/edit-metadata \
+  -H "Authorization: Bearer si_your-api-key" \
+  -F "file=@photo.jpg" \
+  -F 'settings={"author": "Jane Smith", "copyright": "2024 Jane Smith"}'
+```
+
+Set GPS coordinates:
+
+```bash
+curl -X POST http://localhost:1349/api/v1/tools/image/edit-metadata \
+  -H "Authorization: Bearer si_your-api-key" \
+  -F "file=@photo.jpg" \
+  -F 'settings={"gpsLatitude": 48.8566, "gpsLongitude": 2.3522, "gpsAltitude": 35}'
+```
+
+Remove GPS and add keywords:
+
+```bash
+curl -X POST http://localhost:1349/api/v1/tools/image/edit-metadata \
+  -H "Authorization: Bearer si_your-api-key" \
+  -F "file=@photo.jpg" \
+  -F 'settings={"clearGps": true, "keywords": ["landscape", "sunset"], "keywordsMode": "add"}'
+```
+
+Inspect metadata:
+
+```bash
+curl -X POST http://localhost:1349/api/v1/tools/image/edit-metadata/inspect \
+  -H "Authorization: Bearer si_your-api-key" \
+  -F "file=@photo.jpg"
+```
+
+## Example Response (Edit)
+
+```json
+{
+  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
+  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/photo.jpg",
+  "originalSize": 2450000,
+  "processedSize": 2452000
+}
+```
+
+## Notes
+
+- This tool requires ExifTool to be installed on the server. It is included in the Docker image.
+- Metadata is written in-place, so no pixel re-encoding occurs. The file size change is minimal (just the metadata bytes).
+- The `dateShift` parameter shifts all date fields by the specified offset, useful for correcting timezone errors (e.g. `+02:00` or `-05:30`).
+- If no changes are requested (all parameters omitted or empty), the original file is returned unchanged.
+- Supported formats: JPEG, PNG, WebP, AVIF, TIFF, GIF, HEIC/HEIF.
+- For non-browser-previewable formats (HEIF, TIFF), the response includes a `previewUrl` field with a WebP preview.