# How to make a circuit diagram for a PDF document? [closed]

SmartDraw seems nice but is not free.
Circuit Lab was way easier to use, but I could not even rotate the "current source" arrow to point in the upward direction
Circuitikz involves typing in coordinates, which is more inconvenient than dragging and dropping icons.

Is there a free software (preferably an online editor but ok if it is not) that is good for making circuit diagrams?

• PDF documents do not use circuitry .... please clarify your title Jun 29 '18 at 23:05
• KiCad is free. Runs on Windows, Linux, and OSX. [Edited by a moderator.]
– JRE
Jun 29 '18 at 23:06
• Circuit Lab ... click on symbol .... press r(rotate), v(vertical flip), h(horizontal flip) Jun 29 '18 at 23:09
• I'd have merely inserted \usepackage{circuitikz} into my document. Latex generates PDF, no problem. Add 3D rotations of molecular structures, adjacent to the schematic, too. ;)
– jonk
Jun 30 '18 at 0:06
• I've used XCircuit over the years even though it has a small learning curve I recommend it. Jun 30 '18 at 0:58

I use Irfanview to copy an image or screen save then paste crop ... edit. It supports every media format. F10 has a toolbar, It also supports all Adobe addons. Very fast and easy after learning it.

Then paste to Open Office Writer then file> Export to PDF

But you may want scaleable vector graphics for zoom quality. However you can compress in Irfanview a 4k image down to 1%

• Note that if you do a screen grab you will get a bitmap image. Even if you copy into OOW and then export as PDF the image will not be a scalable graphic...it's just a bitmap in a PDF container. Jun 30 '18 at 19:12
• OP was looking for a schematic capture tool not image conversion to PDF. You should check in to a free Windows PDF printer driver such as PDFill. It may save you the copy and paste into Writer. Irfanview is not free, not everyone is retired or wants to be a pirate. FastStone's Image Viewer is feature rich and true freeware. Jul 1 '18 at 2:30
• Wrong again. read the title. It implies needs schematic capture and needs to convert to save to PDF. Irfanview has always been free and the fastest thumbnail generator for a folder with 1000 images does macro edits on a folder and better for me than FS. Quit being wrong and inflammatory . Pirate? which planet ? Jul 1 '18 at 2:44
• But then some better schematic capture tools do PDF so disregard if that applies to your tool of choice. But I agree KiKad is better than some examples suggest so far openhardwarehub.com/assets/projects/steps/364/original/… Jul 1 '18 at 2:55
• for pdf you really want something that produces vector images, not millions of blurry pixels like you get from a screen-grab. Jul 1 '18 at 10:05

# Use Dia!

It's free and available on Linux and Windows. It's like MS-Visio, but as mentioned free. You can search google for additional libraries - there are a plenty of it to find. Here is the link: Dia homepage.