All Libris accounts can store image files. Depending on your subscription type, Libris can also store additional types of files and formats, such as video, audio, and other files.
- File formats determine what kind of software can be used to preview or work with a file downloaded from Libris. For example, Adobe Lightroom handles many image file formats, but does not work with audio file formats.
- The easiest way to know a file’s format is to look at the file extension. The file extension is the characters after the last period at the end of the filename.
- For example, the filename baseball-game.jpg has a file extension of .jpg, which means it’s a JPEG. A JPEG is a specific type of image file.
- Never edit or remove the file extension for your files, either in Libris or once downloaded from Libris. Similarly, never use spaces in filenames.
- For example, if you change the filename of "baseball-game.jpg" (an image file extension) to "baseball-game.mp3" (an audio file extension), or remove the extension entirely so the file is named "baseball-game", your computer might have trouble knowing what software program to use when you click to open it, and you may not be able to open this file at all.
Preparing for Image Upload
Preparing your image files for upload to Libris requires considerations of file format, color space, and metadata.
Image File Format
Considerations of file format inevitably come down to understanding which format is appropriate for a given workflow stage. Although Libris can support a wide variety of image file formats, uploading a format that is useful for your intended audience is a key consideration in creating a standard workflow.
In many cases, Libris is used as a distribution/delivery tool. Generally speaking, we recommend uploading your largest resolution photos in TIFF or JPG. If your images are intended primarily for web use, we recommend the sRGB color space.
You can, of course, choose to archive your RAW (CR2, DNG) or PSD files within your Libris Library. If you store this file format, you would almost certainly never distribute these RAW images to your stakeholders or customers.
PhotoShelter automatically creates multiple resized JPEG versions of every file you upload, so there is no need to upload multiple sizes of the same image.
Libris supports many image file formats, such as:
- Only the 1st page of a PDF document can be previewed in Libris
- PDFs are particularly useful for loading license and rights contracts to their corresponding images’ galleries)
- Protected PDFs, such as those with a password, are not supported
- No playback is available within Libris
- Libris generates an image preview of an EPS file’s contents
- Because this image is adjusted for web display, the image may not look exactly like the original EPS file
- SVG files that contain HTML will render as images
- Libris generates an image preview of some SVG files’ contents:
- Font files, such as DFONT, OTF, and TTF
- Libris generates an image preview for some font files, but does not support previews for all fonts
- Font files, such as DFONT, OTF, and TTF
Image Color Space
Computers use a series of RGB values to represent color. How that color is redisplayed is influenced by the color space because the same RGB values can render very different colors depending on the color space.
Although color space might sound esoteric, the concept is pretty clear when considering something like your logo. Organizations and brands spends enormous marketing budgets to ensure consistency of their corporate identities.
The discussion of color fidelity is moot unless you've calibrated your monitor.
Your color space decision depends on the final output. Generally speaking, for web use sRGB is the most practical and safe color space.
Metadata, the data that describes your content, helps you and others find specific images. The efficiency with which you or others can find an image increases your library's market value and can save your staff time and money.
One best practice is to add IPTC metadata to your files prior to upload. Separate software like Adobe Lightroom, Photo Mechanic, and even the Mac's Photos application can help you and your Contributors if you'd like to add image metadata before uploading to Libris. Libris will pull in and display whatever embedded metadata is on your image at the time of upload.
Video File Format
If your Libris subscription offers video support, Libris can handle video formats such as MOV, MP4, and other common video file types from DSLR and other cameras or those created by video editing software.
Generally speaking, we recommend uploading your largest resolution video in MOV or MP4.
Libris can handle many video file formats, such as:
- Other common video files from DSLR and other cameras, or those created by video editing software
- Full video support can depend on many factors, such as a video’s frame size, frame rate, data rate, codec, and other factors
- The general rule of thumb is: if it uploads and displays as a video file, we support it
Recommended video file settings:
Resolution: 640px to 3840px (4K) wide
Bitrate: 10 to 60 Mbps
Framerate: 15-60 FPS (constant)
Aspect ratio: 16:9
File size: up to 40 GB
Uploading Audio and Other Files
If your subscription offers full file support, Libris can also handle audio and other file formats, such as Adobe InDesign, Microsoft Office, and more (in addition to image and video files). Audio and other files can be uploaded via the Library web uploader, Contributor web uploader, or FTP.
Recommended audio file settings:
Sample Rate: 44.1 kHz
If your subscription offers full file support, Libris can handle many other non-media file types and formats, such as:
- INDD and other Adobe InDesign files
- DOC, DOCX
- XLS, XLSX
- PPT, PPTX
- ZIP: will stay zipped upon upload
- Other miscellaneous file types
Libris does not offer previews for these file types. Common file types in this category, such as Microsoft Office and Adobe InDesign files, will display with specific icons.