Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallOutdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchA missing expected image in Reg-suit can be normal on the first run, when no baseline has been published yet. Otherwise, trace the workflow in order: confirm screenshots exist in actualDir, check that sync-expected retrieves the intended baseline, verify the snapshot key and publisher configuration, then review the comparison report before changing any baseline. Reg-suit’s documentation describes this workflow but does not define the exact error wording, so the message alone cannot identify the cause.
First, determine whether a baseline should exist
Reg-suit compares images in the configured actualDir with expected images fetched into its working directory. If this is the project’s first run—or no snapshot has been published for the selected key—there may be no expected image to retrieve. The official Puppeteer demo shows the first run reporting images as new and publishing them; the next run uses those published snapshots as expected images. Reg-suit Puppeteer demo
- Check whether a previous run published a baseline for this project and branch or commit context.
- Check whether that baseline is stored under the key the current run will request.
- If there is no baseline, follow the project’s normal review process to approve and publish one. A missing baseline is different from an image that exists but differs visually.
Locate the failing stage
Reg-suit documents its workflow as expected-image synchronization, image comparison, and publication. The run command combines these operations; running them separately where possible helps establish whether the problem is in capture, retrieval, comparison, or publishing. Official Reg-suit README
- Capture: confirm the screenshot step completed and produced the expected files.
sync-expected: check whether previous snapshots were retrieved into the working directory.compare: inspect the generated HTML report for missing files or visual differences.publish: check whether current snapshots and reports were uploaded as intended.
Verify screenshot output and actualDir
core.actualDir is required and must point to the directory containing the images to test. Confirm that screenshot generation actually ran, that it wrote the expected filenames, and that the configured path resolves correctly from the project or CI working directory. A path that works locally can point somewhere else when a CI job starts in a different directory.
#1 Best Overall
- Compare the filenames produced by the capture step with the filenames the Reg-suit run expects.
- Check the capture command’s exit status and logs before investigating publisher storage.
- Check the configured
actualDiragainst the job’s working directory and any path changes made by scripts.
Check expected-image synchronization and publisher settings
Expected images are retrieved through the installed publisher plugin. Reg-suit documents S3 and GCS publisher plugins for retrieving previous snapshots and publishing current snapshots and reports; the repository’s plugin-based workflow makes the chosen publisher and its configuration relevant to which baseline is found. Reg-suit repository
Inspect the synchronization output and publisher logs. Confirm that the project selects the intended plugin and that its bucket or storage configuration, credentials, and snapshot location match the baseline you expect. A successful comparison cannot happen against a baseline that the synchronization step did not retrieve.
Confirm the snapshot key, especially in CI
The installed key-generator plugin determines which expected snapshot Reg-suit looks for. With the Git-hash plugin, the README warns that a detached HEAD in CI can prevent Reg-suit from identifying the base commit. Its documented GitHub Actions example fetches full history with fetch-depth: 0 and attaches the branch. Adapt the approach to your CI provider and branch rules rather than copying provider-specific syntax blindly. Reg-suit README: Git-hash plugin guidance
- Inspect the key-generator plugin and the key it selects for the failing run.
- Compare the local and CI keys if the issue occurs only in CI.
- For the Git-hash plugin, make the relevant branch history available and ensure the branch is attached, following the README’s CI guidance.
Use the report before changing thresholds or baselines
The compare command produces an HTML report. If expected images were retrieved but differ from the actual images, treat that as a visual regression to review. Do not overwrite expected images simply to silence a missing-file or difference report; publish a new baseline only after confirming it is the intended change.
Reg-suit’s thresholdRate and thresholdPixel options control tolerated visual differences. They do not make a missing expected image available. Changing them is not a first response to a retrieval or missing-file problem.
Configuration options that matter to this diagnosis
| Setting or component | What it affects | Diagnostic use |
|---|---|---|
core.actualDir |
Required directory containing images to test | Verify the generated files and the path resolved by the run. |
workingDir |
Reg-suit working directory; defaults to .reg |
Check where synchronized expected images are retrieved. |
| Key-generator plugin | Selects the expected-snapshot key | Verify the run requests the baseline you intend, particularly in CI. |
| Publisher plugin settings | Control snapshot retrieval and publication; configuration is plugin-specific | Check selected storage, credentials, and snapshot location. |
thresholdRate, thresholdPixel |
Set tolerance for visual differences | Relevant after images are found and comparison reports differences, not when a file is absent. |
enableAntialias, ximgdiff, concurrency |
Additional documented comparison/core options | Not the first settings to change when expected files cannot be located. |
The README lists these core settings and places publisher settings under the plugins configuration object. Consult the README for the installed plugin’s exact configuration rather than assuming all publishers use the same fields. Reg-suit configuration reference
Screenshot alternative: Or skip the browser setup
If the missing files originate in your screenshot-generation step, ScreenshotNeo can return a website screenshot from one GET request. This does not replace Reg-suit’s expected-image synchronization or publisher configuration.
cURL:
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webp
Best Value
For API options and formats, see the ScreenshotNeo documentation.
- Cookie banners, newsletter popups, and chat widgets are removed before the shot; each cleanup step can be turned off.
- Bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits cost nothing. Responses identify the page verdict and whether the request was billed.
- An MCP server offers
take_screenshot,get_page_info, andcapture_pdftools for AI agents and other MCP clients. - The Free plan includes 1,000 screenshots a month with no card; paid plans start at $5 for 3,000 shots.
Sign up for 1,000 free screenshots a month, with no card.
Common failure patterns and next checks
| What you observe | Check next |
|---|---|
| No expected images on the first run | Determine whether a baseline has been published for the selected key; the demo’s initial run publishes snapshots for later comparison. |
| Capture files are missing before comparison | Check screenshot generation, output filenames, and the CI-resolved actualDir. |
| Local run works, CI does not | Compare working directory, selected snapshot key, branch/history availability, and publisher credentials and location. |
| Synchronization retrieves no intended baseline | Check the key-generator result and publisher plugin configuration, then inspect synchronization logs. |
| Images are found but comparison reports differences | Review the HTML report as a possible visual regression; thresholds concern differences, not missing files. |
| Current snapshots fail to appear in storage | Inspect the publication stage and publisher logs separately from synchronization. |
The official documentation does not establish the exact error string, the Reg-suit version, or the configuration behind an individual incident. For a specific diagnosis, the useful details are the full error and stage, Reg-suit and plugin versions, relevant configuration with secrets removed, the selected key, publisher logs, and whether the behavior differs between local and CI runs.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
