Image formats & upload limits
Documentr stores artwork and report images as master files. The same rules apply in admin, mobile (sync), and CSV import.
Supported formats
| Format | Typical extensions | Max file size |
|---|---|---|
| JPEG | .jpg, .jpeg |
50 MB |
| PNG | .png |
50 MB |
| WebP | .webp |
50 MB |
| TIFF (8-bit) | .tiff, .tif |
250 MB — stored as JPEG |
| TIFF (16-bit) | .tiff, .tif |
50 MB — kept as TIFF |
For CSV image import additionally: at most 200 images and 500 MB total per import batch (before conversion).
TIFF conversion
8-bit RGB or greyscale TIFFs are stored as JPEG quality 95 without changing pixel size (width × height). The ICC profile and dpi tag are kept. The original TIFF is not retained.
16-bit TIFFs over 50 MB are rejected — JPEG cannot store 16-bit. Please export as 8-bit JPEG or 8-bit TIFF.
Colour space & bit depth
| Property | Supported | Not supported |
|---|---|---|
| Colour space | RGB / sRGB, greyscale | CMYK, Lab and similar spaces |
| Bit depth | 8-bit and 16-bit | Float / other exotic depths |
| ICC / colour profile | With or without a profile — both OK | — |
Please convert CMYK files to RGB (ideally sRGB) before uploading.
Where this applies
- Artwork images
- Condition report / views
- Detail photos on damage annotations
- Institution logo (all formats 50 MB, no TIFF conversion)
- Images in CSV import
For detail photos and finalization, see Detail photos.
Mapping: sharp zoom
Large camera files (often 40–50 megapixels) would stall mapping on open and zoom. For photos over 20 megapixels (larger than about 6000 × 4000), Documentr automatically builds tiles after upload: small full-sharpness patches.
Smaller photos do not need tiles. Zoom simply scales the working preview — that is enough.
How it feels
In the web app you zoom as usual (scroll wheel, pinch, zoom tool). You see a working preview first; once it would look soft, mapping fetches a sharp patch of the visible area. Panning keeps that patch sharp. Drawing, erasing, and damage markers stay on the artwork photo — only the photo gains detail.
Tiles are built in the background after upload. Very large files can take a few minutes. You do not turn anything on: no second upload, no quality dropdown, no settings switch.
On iPad you map on the working preview. Tiles apply in the web app.
PDF and download
Export and archive PDFs always use the master, not the zoom tiles. Image quality in PDF settings is unchanged.
PDF output
Master files stay unchanged. For download and archive PDFs, Documentr scales embedded raster images according to image quality in PDF settings. Logos with transparency stay PNG. The mapping in the PDF is SVG and is independent of this raster setting.
Mobile & TIFF notes
- In the web app on a phone (Android/iOS browser) you can take a photo or pick an existing image from the device gallery. Documentr’s media library is separate.
- On iPad, the camera/library may keep HEIC locally. For sync and server upload you need JPEG, PNG, WebP, or TIFF — otherwise the upload fails.
- Large 8-bit TIFFs (e.g. uncompressed camera files around 250 MB) can be uploaded directly; the progress bar shows the upload and then conversion. Scan TIFFs over 250 MB, or 16-bit files over 50 MB, exceed the limit.
- CMYK still needs to be saved as RGB before upload.