How to use DZI Deep Zoom Image Viewer: practical workflow and checks
Use a real example to prepare input, run DZI Deep Zoom Image Viewer, verify output, understand privacy, and respect current boundaries.
When to use it
Open DZI XML or a public tile URL and inspect dimensions, TileSize, Overlap, and deep zoom. A DZI is a tile-pyramid descriptor and normally requires a sibling _files directory. Uploading the .dzi alone does not include image pixels.
Practical example
If sample.dzi declares 256-pixel tiles, overlap 1, and 100000×60000 dimensions, sample_files/level/x_y.jpg must also be reachable; the XML alone is not the image.
Steps
- Choose DZI XML or enter a public descriptor URL.
- Inspect Format, TileSize, Overlap, Width, and Height.
- Confirm the matching _files tile path is accessible.
- Zoom to check edges, seams, missing tiles, and top-level detail.
Checks after completion
- View Deep Zoom without a specialist client
- Diagnose tile paths and pyramid levels
Do not rely on a success message alone. Sample counts, fields, dimensions, coordinates, text, or visual output against the source. Production, scientific, business, rights-sensitive, or formal deliverables require validation in the receiving system.
Current boundaries
- A local DZI file does not contain its tile directory
- Remote display depends on CORS and server access
- No DZI pyramid generation or missing-tile repair
Privacy and safety
Local files are processed in the browser tab and are not uploaded to FreeTool to perform the task. IIIF/DZI URLs are requested directly by the browser and remain subject to source logs, CORS, and access policy. Clear downloads, screenshots, and clipboard data after a shared device.
Common questions
Why is the canvas blank?
The _files directory may be inaccessible, paths may have wrong case, or CORS may block tiles.
Can it convert a large image to DZI?
No. The current tool is a viewer and does not generate pyramids.
Is the URL uploaded?
It is not saved; your browser requests the DZI and tiles directly.