loupe-iiif

by matthewyangjiefeng · Tools

Manifest V3 Free

View in Chrome Web Store Data as of 21 Oct 2026

IIIF Presentation API manifest checker & validator

Users

+1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#150K

#125K among extensions

Version

1.3.1

updated 28 Aug 2026

Users

monthly, 3 months

Latest, 21 Oct 2026: 22 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 months

Latest, 21 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About loupe-iiif

loupe-iiif checks and validates IIIF Presentation API (2.1, 3.0, and 4.0) manifests, right in your browser. IIIF manifests can break in ways that are hard to spot: a missing comma, a misspelled field, an image URL that quietly 404s. loupe-iiif finds these issues before your viewer does. Paste a manifest, load it from a URL, or open a file. It appears in a code editor and is checked as you type. Issues are underlined where they occur and listed in a report, with one click to jump to the exact spot in the JSON. What it checks: • Well-formedness: is it valid JSON? • Spec conformance: does it match the IIIF Presentation API structure? • Linking: do the URLs it references actually resolve? • Best practices: is it valid but ill-advised (missing labels, thumbnails, rights info)?