Search files, editable visual templates, and live browser targets from one registry-backed directory. Filtered query views stay crawlable for links but are deliberately noindex; the stable taxonomy pages below remain the canonical search surfaces.
Page 1 of 19; 24 results per page.
A 16-bit (deep-colour) grayscale PNG holding a smooth 0–65535 gradient — for testing high-bit-depth support and spotting banding when a tool truncates to 8-bit.
A 16-step greyscale wedge from pure black to pure white, for testing tone reproduction, banding, and monitor calibration.
A flat 50% grey card (rgb 128,128,128), a reference for white balance and exposure testing.
8-bit PNG twin of the linear 16-bit greyscale ramp — compare banding after truncation.
A left-to-right alpha gradient over a solid colour, for testing how a viewer or compositor renders partial transparency.
An 8-frame looping animated GIF of a moving dot — tests animation handling, first-frame extraction, and GIF parsing.
An animated loading spinner using SMIL (animateTransform) — a self-contained animated SVG for testing whether a renderer or converter handles SVG animation, and how it rasterises an animated frame.
A 12-frame animated PNG (APNG) of a rotating arc — a lossless, alpha-capable alternative to animated GIF. Useful for testing APNG support, frame extraction, and GIF↔APNG conversion.
The binary ground-truth alpha mask (white = subject, black = background) for the cluttered-background apple — compute IoU or boundary F-score of a predicted mask against this file.
The ground-truth transparent cut-out of the apple used in the cluttered-background hard case — the ideal output of a perfect background remover.
An apple on a busy, colour-matched background — the hard input for a background remover or matting model. Score a prediction against the paired ground-truth cut-out and alpha mask.
A clean bar chart of monthly revenue with axis labels, gridlines, and value labels — a real-world fixture for testing chart-extraction and OCR tools, vision models, and thumbnail rendering.
A bar chart drawn as vector SVG — axis, gridlines, labelled bars — the scalable counterpart to the raster chart images, for testing SVG chart rendering and vector conversion.
The fruit still life as a baseline (sequential) JPEG — paired with a progressive JPEG of identical content for testing decode order and progressive-rendering support.
A pure black-and-white checkerboard, useful for testing scaling, aliasing, and edge handling.
A continuous linear greyscale ramp from black to white, useful for spotting banding and gamma issues.
The vCard (.vcf) ground truth for the business-card image — the same name, title, company, email, phone, and address in structured form. The positive reference for testing OCR-to-contact extraction.
A rendered business card with a name, title, company, email, phone, and address — paired with a matching vCard so you can measure OCR and contact-extraction accuracy against a known ground truth.
The fruit still life converted to the CMYK (print) colour space and saved as a JPEG — for testing CMYK decoding and CMYK→RGB conversion. Some web viewers render CMYK JPEGs with a colour shift.
Same blocks scene encoded as png — rung on the Wave E codec ladder for quality / convert comparisons.
Same blocks scene encoded as q20 — rung on the Wave E codec ladder for quality / convert comparisons.
Same blocks scene encoded as q50 — rung on the Wave E codec ladder for quality / convert comparisons.
Same blocks scene encoded as q80 — rung on the Wave E codec ladder for quality / convert comparisons.
Same blocks scene encoded as webp — rung on the Wave E codec ladder for quality / convert comparisons.
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