Start with a clear photo
Upload a still JPEG, PNG or WebP with a clear view of the dial. Good light and visible edges make details easier to inspect.
Check watch dial alignment from a photo. Review marker centering, rotation and date-window geometry, adjust points and export an annotated PNG.
Guests receive 1 QC per rolling 72 hours for automatic center and tilt suggestions; free signed-in accounts also receive automatic hour-marker identification. Automatic scoring requires a subscription. Sign in for 3 QCs per rolling 72 hours.
You stay in control of the points used for each measurement.
Upload a still JPEG, PNG or WebP with a clear view of the dial. Good light and visible edges make details easier to inspect.
Explore marker centering, rotation and date-window alignment where the image supports a measurement. Adjust points against the photo.
Recalculate after an edit, then download an annotated PNG. Sign in before starting to save inspections you can reopen for 72 hours.
One QC starts one analysis. Editing, recalculation, reopening and PNG export are free within your tier’s capabilities.
Define the dial center
1QC
per rolling 72 hours
Save your inspections
3QCs
per rolling 72 hours
For more frequent inspections
Unlimited
QCs after manual activation
DialQC offers free QCs with no ads. Hosting and image processing cost money. Buy me a coffee to support the service. After donating, email info@dialqc.com from your Google account email so we can manually activate unlimited QCs.
Guest access includes 1 QC per rolling 3 days for automatic center and tilt suggestions. These are the default allowances; your account shows the current limit. An explicit reanalysis uses another QC. Invalid images do not use allowance; failures after processing is admitted do. Saved history expires 72 hours from the original analysis start, even after edits. Sign in while your guest inspection is open to save its original photo and edited frame to My QCs, without another analysis. Complete sign-in within 24 hours; its history retention starts when saved.
Prepare a useful photo and understand what the measurements can show.
DialQC measures visible dial-marker centering and rotation, date-window alignment and date-digit position where the image supports them. Optional AI identifies visible objects; geometry calculations use points on the source photo. Review and correct those points before relying on a result.
Use a sharp, straight-on photo with even light, the whole dial visible and as little glare as possible. Keep the camera centered over the dial and avoid hands covering the detail you want to inspect. Use a still JPEG, PNG or WebP, at least 200 pixels on each side and up to 32 MiB and 64 megapixels. A larger image cannot recover blurred or hidden edges.
No. DialQC checks visible geometry; it does not establish authenticity or assess movement performance. Perspective, reflections, blur, hidden edges and incorrect points can change measurements. Unsupported checks remain unavailable; an unavailable measurement is not a pass. The score summarizes supported checks, not the quality of the whole watch. Compare the points and explanations with the original photo.
Google sign-in currently gives 3 QCs per rolling 72 hours. Guests receive 1 QC per rolling 72 hours for automatic center and tilt suggestions; free signed-in accounts also receive automatic hour-marker identification. Automatic scoring requires a subscription. Editing points, recalculating, reopening a saved inspection and exporting an annotated PNG are free. Starting an explicit reanalysis uses another QC. Signed-in saved history is accessible for 72 hours from the original analysis start.
DialQC checks visible geometry. It does not establish authenticity, assess movement performance or guarantee accuracy. Glare, blur and hidden edges can leave measurements unavailable. Always compare the points and explanations with the photo.
Photos are processed on servers. Uploads, available results and account or guest identifiers may be emailed to the operator for quality review. When AI identification is enabled, prepared images are sent to OpenAI. Saved-history access ends after 72 hours; other copies and records may remain longer.
Cookies, guest IP/browser identifiers and website analytics support the service. Read the privacy policy before uploading or signing in.