Design feedback that points at the exact pixel

CobaltCapture is a free, browser-based way for designers to review the built product and ship feedback that points at the exact spot. Open the deployed build or staging URL, capture the screen, crop to the component that drifted from the spec, pin it, and say what is wrong. Publish, and the critique becomes a review URL with a one-click markdown export for whoever does the fix.

The gap designers fight is the one between the design and the build. The spacing is off by four pixels, the hover state is missing, the type scale collapsed on mobile. Describing that in a Slack thread is slow and lossy. Screenshotting it into a doc and typing "see attached" loses which element you meant. The review needs to point.

Review the build against the spec

Click Capture screen and pick the tab with the live build. Drag a box around the card, the button, the broken breakpoint, whatever drifted, and crop to just that. Drop a numbered pin on the exact pixel and dictate the issue: "Pin 1, this padding is 12 not 16. Pin 2, the focus ring is missing on the secondary button." Each screen can hold several pins, each with its own note.

That is a design review that a developer can act on without a meeting, and the pins survive into the export so the intent never gets lost in translation.

Critique, not just bug-catching

Not all design feedback is a defect. Sometimes it is a design critique: the hierarchy reads wrong, the empty state feels cold, the flow asks for too much too early. Those notes need the same anchoring, the screen plus the spoken reasoning, so the receiver understands the why and not just the what. Dictation is built for this: talk through the critique the way you would in a review meeting, and it lands as editable text next to the screen.

For heuristic and usability notes across a whole flow, the UX feedback workflow strings the screens into one document the team reads in order.

What ships out

A public review URL with each cropped screen, its pins, and your notes. Export it as markdown for the developer or the coding agent, as PDF for a design-review readout, or as a Word doc for a stakeholder. The source URL is stamped on each frame, so anyone opening the review knows exactly which screen you were looking at.

No install, no extension, no Figma plugin to manage. CobaltCapture captures what the browser renders, which is why it reviews the built result without reaching into any editor.

Get started

cobaltcapture.com, free, no signup needed to publish your first design review.

Frequently asked questions

Can I annotate the screenshot with arrows and labels?

CobaltCapture crops the captured still and lets you drop numbered pins that point at a specific spot, then attach a typed or dictated note to each. It does not draw freeform arrows, boxes, or text labels on the image, the pin plus the comment carries the same intent without the markup overhead.

How do I tell the developer which spot I mean?

Drop a numbered pin on the exact location and dictate the issue. The pin is burned into every export, so the developer sees pin 2 on the screenshot and reads your note for pin 2 in the same document, no "third icon from the left" guesswork.

Can my coding agent read the design feedback?

Yes. The markdown export carries the cropped screenshots, the pins, the source URL, and your notes as captions, the format agents like Cursor and Claude Code ingest directly.