A1Always a precise location
Column letters, row numbers and the selected coordinate. Select a cell or enter C7 in Go to jump to it.
50 × 50Your grid, your choice
Sizes 1–20: from 50 × 50 to 1000 × 1000 pixels. Cells stay square and fixed when resizing. Adjust colour and opacity; show or hide the grid.
✎Notes that explain the work
Click a cell, write in the yellow note and expand it. Set priority and status: to do, in progress, resolved. List, show/hide, delete and undo deletion.
◯ □A sketch makes it clear
Freehand, circles/ovals and rectangles. Drawing colour and stroke width, undo and clear/recover sketches. Drawings follow page scrolling.
↔Measure before you ask
Activate Ruler and drag between two points: distance, ΔX and ΔY in CSS pixels. Free, horizontal or vertical measurements; Shift locks to the nearest axis. Measurements follow scrolling and are saved in revisions, JSON and screenshots.
↕A panel that finds its place
Drag the title; dock at the bottom for a horizontal toolbar. Dock, undock, collapse, expand or close: position is remembered. Browse lets clicks reach the site.
PNGShow exactly what you mean
Choose Capture visible area or Capture entire page: one PNG with visible notes, grid, drawings and measurements. Full-page capture scrolls and stitches the page, then restores your position. Esc cancels. Load images and content first; infinite pages, dynamic elements and internally scrolling areas may need separate captures. Add a filename and confirm saving.
↺Pick up where you left off
Local autosave per page, Save review, New review and history restore. Cell size is protected when notes exist; start a new review to change it.
JSONTake your annotations with you
Export and import a review on the same page. JSON includes notes, grid and drawings; PNGs stay separate. Share files yourself. Accounts and online collaboration are future features.