compare-screenshots SKILL.md skillA
compare-screenshots from dzhng/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dzhng/skills/compare-screenshots@git:20261014.9ac63f5Pins git:20261014.9ac63f5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dzhng/skills
- Path
skills/visual/compare-screenshots/SKILL.md- Versions recorded
- 7
- Latest version
- git:20261014.9ac63f5, committed Oct 14, 2026
- First version recorded
- Jul 2, 2026
- Size
- 10,672 bytes
- Repository stars
- 1,377
- License
- MIT
Compare screenshots against the intended design, distinguishing approved references from historical baselines. Use for iterative implementation matching, before/after visual review, objective image telemetry, or checking a lone capture for flat, empty, or badly framed content.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Compare Screenshots
Judge images against the intended result. A user-approved design is the target;
a historical baseline is only an earlier attempt and may be wrong. Metrics locate
differences, never decide correctness. Use
[design-with-images](../design-with-images/SKILL.md) for the full exploration-to-implementation loop.
## Workflow
1. **Establish the target.** Use the user-approved reference and stated design
requirements when available; do not replace them with your own taste. Otherwise
derive the target from the visual requirement, what the thing depicts in reality
and the domain skill that owns the look. Write it down in one or two
concrete sentences ("low sun should cast long shadows east; trees fill the
canopy; labels stay legible at this zoom").
- If the right answer isn't clear — competing valid readings, a taste or
product-intent call, a tradeoff only the owner can settle — **stop and ask
the user** what the correct answer should be. Show them the comparison.
Do not quietly default to the baseline to avoid asking; that bakes in
whatever the baseline got wrong.
…Read the whole file at its exact version.
How to install
mdr add dzhng/skills/compare-screenshots@sha256:856df00e15b4948cThe line at the top of this page pins the label git:20261014.9ac63f5, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_4i7m5zdg7ijd5vmb)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Jul 2, 2026 and Oct 14, 2026, about one every 17 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261014.9ac63f5 latest | 2026-10-14 | 9ac63f5 | 10,672 B | A | view · diff |
| git:20260930.5e8b5cb | 2026-09-30 | 5e8b5cb | 10,550 B | A | view · diff |
| git:20260930.b13ecee | 2026-09-30 | b13ecee | 10,405 B | A | view · diff |
| git:20260930.d33cf07 | 2026-09-30 | d33cf07 | 9,311 B | A | view · diff |
| git:20260825.3631529 | 2026-08-25 | 3631529 | 9,182 B | A | view · diff |
| git:20260825.ae9ec12 | 2026-08-25 | ae9ec12 | 8,281 B | A | view · diff |
| git:20260702.e38edde | 2026-07-02 | e38edde | 6,681 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (10672 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
dzhng/skills · 1,377 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4i7m5zdg7ijd5vmb GET https://markdownregistry.com/api/v1/resolve?ref=dzhng/skills/compare-screenshots GET https://markdownregistry.com/api/v1/blob/856df00e15b4948ce6b890d3ff09802355ecaaacfc780668f28a1c4cc44ab277
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.