Diagrams
Diagrams is a full diagram editor for flowcharts, network and cloud architecture drawings, UML, entity relationship diagrams, org charts, mind maps, and BPMN. Open it here and start drawing straight away. There is nothing to install and no account to create.
Your diagrams never leave your browser. The editor runs on your own machine. Saving writes a file to your downloads folder, exactly like any other download, and opening a diagram reads it back from your disk. No diagram is ever sent to this site or to anyone else. The page counts the visit, as every page here does, and that counter never sees your work.
Where your work is kept
- Saving to your device. Use File then Save as, then choose Device. The diagram arrives in your downloads folder as a file you own, in the format you picked.
- Opening again. Use File then Open from, then Device, and pick the file back off your disk. Drag and drop onto the canvas works too.
- The current drawing. Whatever is open is remembered by this browser on this device, so a reload does not lose it. Clearing site data clears it, and it is not readable from another browser or another machine. Save to your device for anything you want to keep.
- No cloud storage. Google Drive, OneDrive, Dropbox, GitHub, GitLab, and Trello are all switched off in this build. No sign in is offered because none is needed.
- Export. PNG, SVG, HTML, and XML export all happen inside the browser and download the same way. Server side export is switched off, so no diagram is ever uploaded for conversion.
Shape library
The shape sidebar opens on Oliabak, a palette added by this fork. It carries the classic network device icons drawn in grey with red markings, and three shapes the original editor does not offer.
- Classic devices. Routers, switches, firewalls, hubs, gateways, servers, storage, and wireless equipment, in the grey and red colouring rather than the blue the original ships. The twenty everyday ones sit at the top, and the full catalogue of 118 follows in collapsed sections below.
- Every colour stays editable. Body, outline, and marking colour are separate controls in the Format panel, so any icon can be recoloured on the canvas. The icons are vector shapes, not flat images.
- Curved lines. A curved connector with a handle you drag to set how far it bows, and an S curve with a handle at each end. The original can only smooth a line that already has waypoints, so a plain two point line stays straight.
- SmartArt. Cycle rings and the DevOps figure eight, cut into chevron stages with the labels following the curve. The number of stages is a field in the Format panel, and each stage is its own cell, so a double click edits its label in place and a single stage can be recoloured. Chevron processes and step boxes come in three to six steps.
- Tunnel. A see-through tube for drawing a VPN tunnel across a topology. It is half transparent by default, so whatever it passes over stays readable, and both ends are open. One handle takes it from dead straight to fully bowed, so the same shape covers a plain site to site tunnel and one that has to bend around the devices beneath it.
Desktop application
The same editor is also built as a macOS application for working offline and for opening diagram files straight from Finder. It is built from source rather than distributed here, so there is no download to verify and no installer to trust. It keeps its own settings and does not take over the default handler for diagram files, so it sits next to any other diagram editor without disturbing it.
Credits and license
Diagrams is an independent fork of draw.io, copyright JGraph Holdings Ltd and draw.io AG, used under the Apache License 2.0. The editor also includes mxGraph, copyright JGraph Ltd, under the same license.
This build changes the name and appearance, removes the telemetry and the third party export and conversion endpoints that the original sent diagram content to, and turns off the cloud storage backends. A record of every change is included with the application.
draw.io is a registered trademark of JGraph Ltd. Diagrams is not affiliated with, endorsed by, or sponsored by JGraph Ltd or draw.io AG.