All Tools

Draw boxes, lines, arrows, and labels on a character grid, then copy or export your diagram as plain text using ASCII or Unicode box-drawing characters.

Create charts and graphs with a live preview. Supports bar, line, pie, doughnut, scatter, area, and radar charts with data editing, Excel import, and PNG export.

Build flowcharts and process diagrams with 44 drag-and-drop shapes, smart connections, auto-layout, and export to PNG, SVG, or JSON.

See in real time when your window has focus, loses focus, or its tab is hidden, with live timers, counters and a full event log.

Turn any text into a customizable word cloud where the most frequent words show up largest. Tune colors, shapes, and fonts, then export a PNG.

Build interactive project timelines with tasks, groups, and dependency arrows. Drag bars to reschedule, resize to change duration, track progress, and export to PNG.

Create professional side-by-side comparison tables for products, pricing plans, software, or any items with customizable cell types and visual highlighting.

Write Mermaid.js code and instantly preview flowcharts, sequence diagrams, class diagrams, and more with live rendering.

Create mind maps in your browser with 4 layouts, drag-and-drop topics, color themes, markers, sticky notes, and export to PNG, SVG, PDF, or JSON.

Compare two images with a draggable before after slider. Upload before and after photos, switch horizontal or vertical, edit labels, and download a PNG.

Check and change the DPI/PPI of your images for print or web. Convert to 300 DPI, resample the pixels, or update the DPI tag only — JPEG, PNG, WebP, BMP.

Screen for astigmatism using a clock dial chart. Test each eye individually and get instant results with an estimated axis.