JotJam
Free in your browser: sketch, draw floor plans to scale with free architecture symbols, or play and record piano, guitar and drums. No sign-up to start.
Free in your browser: sketch, draw floor plans to scale with free architecture symbols, or play and record piano, guitar and drums. No sign-up to start.
This page is designed to help you find out whether JotJam is good and if it is the right choice for you.
JotJam is a free web app with three separate tools for getting an idea down before it slips away. It runs in the browser on phones, tablets and computers.
Sketch pad: pencil, pen, marker, airbrush and eraser on blank, dotted or squared paper. Supports stylus pressure (Apple Pencil and other pressure pens); once you use a pen, fingers only pan and zoom, so you can rest your palm. You can put a photo under the ink to trace over. 24 step-by-step how-to-draw guides for kids and beginners open faded on a blank page to trace.
Design drawings: walls, lines, rectangles, circles, arcs, curves, dimensions and text that snap to the grid, ends, midpoints and 15° angles. Type an exact length in mm, cm or m, switch between square and isometric grids, and drop in 153 architecture symbols drawn at real size (plan, elevation, section and axonometric). Opens DXF and SVG files. Export PNG and SVG, or a scale PDF and DXF for CAD.
Piano, guitar and drums: a five-octave piano you can play with your computer keyboard, a guitar with ten common chords, and a nine-pad drum kit. Metronome with tap tempo, recording up to 10 minutes, a piano-roll editor, MIDI and MusicXML import, and MIDI, WAV and sheet-music export. There is also a 16-step drum machine, a microphone guitar tuner and charts for 120 piano and guitar chords.
40 free templates (floor plans, cartoon scenes made of brush strokes, short songs) open as editable starting points.
Nothing to install, and you can start without an account. Signing in (Google, or a code sent to your email) is only needed to save work; saving uses credits, and free credits are given every day you sign in. Available in 14 languages.
Listed in
Scale PDF and DXF export
Floor plans export to a scale PDF or a DXF for CAD, plus PNG and SVG
Real-size architecture symbols
153 symbols (plan, elevation, section, axonometric), free SVG/PNG download
Stylus pressure
Apple Pencil and other pressure pens; fingers pan and zoom once a pen is used
Exact typed lengths
Type 3600 + Enter for a 3.6 m wall; units mm, cm or m
DXF and SVG import
Opens text DXF and SVG files as editable lines, arcs, circles, curves and text
Online piano
C2 to C7 with sustain; play it with the computer keyboard or a touch screen
Recording
Up to 10 minutes on piano, guitar or drums; saved riffs download as MIDI or WAV
Sheet music export
PDF (engraved with LilyPond) and MusicXML from saved riffs
No account to start
Draw, design and play without signing in; sign in only to save
14 languages
Including Arabic (right-to-left), Japanese, Korean, Hindi and Chinese
Three tools that are usually separate apps sit side by side: a freehand sketch pad, a 2D floor plan editor that works to real scale, and a piano, guitar and drum kit with a record button. The 153 architecture symbols are drawn at real size, so a bed or a door lines up with walls you typed in millimetres, and a plan can be exported as a scale PDF or a DXF.
Choose it if you want a 2D plan to scale without installing anything or signing up first. Lengths are typed in mm, cm or m, the symbols are real size, and you can open a DXF or SVG and keep editing. It is 2D only, so if you need a 3D walkthrough, Planner 5D or SketchUp fits better.
Students and hobbyists drawing room layouts, parents and kids using the how-to-draw guides on a tablet, and people who want to play or record a short tune in the browser without installing music software.
I'm an independent developer. I wanted one place to get an idea down quickly, whether it was a room layout, a doodle or a melody, without installing three apps or making an account first. The site went live on 22 October 2026.
Nuxt and Vue on the front end, Konva for the drawing canvas, perfect-freehand for brush strokes, and Tone.js with the Web Audio API for sound. The back end is a set of Spring Boot services with MySQL and Redis; scale PDF and DXF files and sheet music (LilyPond) are made on the server.
We have collected here some useful links to help you find out if JotJam is good.
Check the traffic stats of JotJam on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of JotJam on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of JotJam's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of JotJam on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
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