LibrePCB 1.0.0 Released

Blog Subscribe

September 24, 2023

After a few weeks of testing the RC1 and bugfixing, finally the stable release of LibrePCB 1.0 is finished and available for download! Check out the awesome new features and the migration notes below.

For the reasoning behind bumping the version number to 1.0, check out the blog post LibrePCB 1.0 Roadmap.


Advanced PCB Features

One of the goals of this release was to get rid of several limitations which made LibrePCB 0.1.x unsuitable for many PCB projects. Therefore the following board editor features are now available:

  • Thermal relief pads in planes (#1160)

  • Blind & buried vias (#1163)

  • Plated and non-plated slots (#1071, #1076)

  • Keepout zones (#1167)

  • Rounded and custom footprint pad shapes (#1102, #1103)

  • Configurable automatic stop mask and solder paste on pads (#1137)

  • Fiducials and other pad types (#1142, #1143)

So there should be no show stopper anymore which prevents you from using LibrePCB for more complex PCB designs! 💪

3D Viewer & STEP Export (#1156)

Finally it’s possible to review the PCB design in a realistic 3D viewer, with proper rendering of copper layers, solder resist and silkscreen! Even devices are rendered if STEP models have been assigned to their packages in the library. In addition, the whole PCB can be exported as a STEP model so it can be opened in a mechanical CAD.

For a detailed description, check out the corresponding pull request — or just watch this nice GIF! 😀

Since your existing projects do not contain any 3D models yet, initially only the plain PCB will be rendered without any devices on it. To get the devices appearing, you need to add 3D models to the corresponding packages in your libraries. Afterwards you need to trigger Project 〉Update Project Library to update the packages in your project.

Our official libraries already contain some 3D models, but there are still many packages without 3D model. Just look for library updates from time to time.

MPN Management & Assembly Variants (#1180)

It is now also possible to specify manufacturer part numbers (MPNs) in the library so that you don’t need to manually enter them every time you add a component to a schematic. These MPNs will then be exported to the BOM to get very accurate information about the parts you need to order.

But adding just one MPN is sometimes not enough. Probably most hardware engineers experienced supply chain issues in the last few years and learned how important it is to define second source parts. With LibrePCB you can now even explicitly specify alternative parts in the schematic which will get exported to the BOM too!

In addition, it is now possible to define multiple assembly variants of a project, for example to omit ("do not mount") specific parts in some of the product variants. For more details about this feature, please take a look at its full explanation.

Unified Production Data Files Generator (#1194)

With LibrePCB 1.0 you can now export production data like a pro! Thanks to so-called output jobs, this task has become very easy, fast, flexible and reproducible:

With the archiving job, there’s even no need anymore to manually create a ZIP file for sending Gerber files to your PCB manufacturer. Just specify the ZIP filename and which job outputs shall be contained, and LibrePCB creates the ZIP in a few milliseconds for you.

These jobs can not only be executed from the graphical interface, but also from the command-line. So if you like to automate the generation of output files (e.g. on a continuous integration system), now you can!

Migration Notes

Workspace & Libraries

When you open your existing workspace the first time with LibrePCB 1.x, it needs to be upgraded to the new file format. A wizard will automatically guide you through this (very simple) process. Generally it just recursively copies the workspace directory v0.1 to a new directory named data.

If you’re working with external tools (e.g. Git) on libraries, keep in mind to access them with the new path instead of the old one.

After the workspace migration it can take several minutes until your libraries are accessible because they are migrated to the new file format in background.


Once you open a LibrePCB 0.1.x project the first time with LibrePCB 1.x, it will automatically be upgraded to the new file format. After saving it to disk, it won’t be possible anymore to open it with LibrePCB 0.1.x.

Note that although the upgrade is generally not critical, there might be small differences in your board after the upgrade. LibrePCB will show you a list of what has changed during the upgrade.

Installation / Packaging

From this release on, we do no longer provide an installer for Linux and MacOS. If you installed LibrePCB 0.1.x with the installer, we recommend to uninstall it and then install it with a different method.

For package maintainers: Note that LibrePCB now depends on Qt Quick, OpenCascade, OpenGL and GLU (at build time and runtime). See details here.


Library Editor:

  • Make symbol pin text placement configurable (#971)

  • Add "assembly type" property to packages (#1128)

  • Add "function" property to footprint pads (#1142)

  • Support slotted holes (#1071)

  • Support slotted footprint pads (#1076)

  • Support footprint pads with custom corner radius (#1103)

  • Support custom footprint pad shapes (#1102)

  • Support custom copper clearance around footprint pads (#1143)

  • Allow adding unconnected (pure mechanical) footprint pads (#807)

  • Support configuring stop mask & solder paste on footprint pads (#1137)

  • Add configurable stop mask opening to non-plated holes (#1111)

  • Support keepout zones in footprints & boards (#1167)

  • Add new layers for top/bottom package outlines (#1198)

  • Support adding part numbers to devices (#1177)

  • Support dismissing library check messages (#1107)

  • Turn overlapping pads warning into an error (#1108)

  • Display tables with row numbers instead of UUIDs (#1138)

Schematic Editor:

  • Support adding custom texts to schematics (#806)

  • Support adding polygons to schematics (#810)

  • Support specifying part numbers & assembly variants (#1180)

  • Support mirroring alignment of net labels (#879)

  • Detach symbol texts to make them movable/editable (#1085)

  • Optionally show pin numbers in schematics (#1149)

  • Remove transparency of symbol grab areas (#1083)

  • Automatically refresh schematic thumbnails (#1131)

  • Automatically select first result when searching for components (#1190)

  • Add ERC warning for schematic wires with open end (#1185)

  • Move board related messages from ERC to DRC (#1118)

Board Editor:

  • Implement 3D viewer & STEP export (#1156)

  • Add support for blind & buried vias (#1163)

  • Implement thermal relief pads for planes (#1160)

  • Support automatic THT pad annular rings (#1097)

  • Make exposure of vias configurable (#1164)

  • Always connect vias to planes, regardless of connect style (#1100)

  • Use rounded corners for all expanded pad/via shapes (#1080)

  • Allow creating unconnected traces/vias/planes (#854, #1165)

  • Support locking placement of items (#1144)

  • Extend board setup with more PCB properties (#1154)

  • Remove support for non-circular vias (#1088)

  • Support changing width of selected objects (#1189)

  • Auto-rebuild planes asynchronously (#1159)

  • Save and restore board planes visibility (#809)

  • Render pad & via texts with Fontobene (#1206)

  • Rename board device property "mirror" to "flip" (#1157)

  • Rename plane "orphans" to "islands" (#1162)

  • Cleanup board design rules (#1090)

  • Merge all board settings into one dialog (#1113)

  • Fix context menu of selected devices (#1193)


  • Add minimal, fast DRC mode "quick check" (#1117)

  • Support approving DRC messages (#1121)

  • Store DRC settings in board file (#1116)

  • Add checks for board outline validity (#1123)

  • Add checks for minimum drill distance (#1122)

  • Add checks for silkscreen width/height/clearance (#1183)


  • Implement unified output files generator (#1194)

  • Implement IPC-D-356A netlist export for boards (#1081)

  • Enable solder paste Gerber export by default (#1104)

  • Omit zero-width outlines of filled polygons in Gerber export (#1182)

  • Delete obsolete Gerber files left over from previous export (#1155)

  • Add assembly type column to pick&place CSV files (#1126)

  • Store custom BOM attributes in project files (#1135)


  • Implement new command open-step (#1222)

  • Support --check flag to run library element checks (#1109)

  • Support --drc flag to run the design rule check (#1133)

  • Use -v for --verbose instead of --version. (#1063)


  • Change transformation order of mirror and rotate (#1152)

  • Allow characters . & ( ) in identifiers (#1161)

  • Render ! in pin-, pad- and net names as overlines (#1172, #1178)

  • Rename attributes MODIFIED_DATE/MODIFIED_TIME to DATE/TIME (#1151)

  • Rename "Top/Bottom Placement" layers to "Top/Bottom Legend" (#1166)

  • Add a dedicated layer for board cutouts (#1168)

  • Support panning with right mouse button in all editors (#1174)

  • Support enter/delete shortcuts in table widgets (#1184)

  • Support opening *.lppz projects with the editor (#1202)

  • Merge all project related dialogs into single dialog (#1129)

  • Auto-check outdated and recommended libraries in library manager (#1188)

  • Show deprecated library elements with red color (#1216)

  • Make graphics appearance configurable in workspace settings (#1086)

  • Rename term "Repository" to "API Endpoint" (#1158)

  • Update/extend information shown in about dialog (#1114, #1192)

  • Fix possibly unexpected center of rotate/mirror operations (#1082)

  • Fix missing numeric sort at various places (#1105)

  • Do not warn on stderr about empty directories in libraries (#1211)

  • Suppress warning on stderr caused by argv[0] (#1212)


  • Stop providing installers for macOS and Linux (#1147)

  • Support older macOS versions (>=10.14) (#1099)

  • Register *.lpp file extension on macOS (#1145)

  • Support registering *.lpp file extension on Linux at runtime (#1146)

  • Support translating Linux desktop entry comment (#1148)

  • Support using (custom) xdg-open command to open URLs (#1207)

  • Add a QtQuick test window (#1196)

  • Remove CLI dependency to QtWidgets library (#1139)

  • Compile sources with -Wpedantic flag (#1110)

  • Improve & rename metainfo XML file (#1221)


  • Prepare file format for adding resources to library elements (#1181)

  • Add "generated by" property to library elements (#1195)

  • Add alternative names to packages file format (#1199)

  • Remove obsolete workspace settings after file format upgrade (#1067)

  • Upgrade all libraries file format during background scan (#1187)

  • Merge some unnecessary classes for simplification (#1066)

  • Remove support for legacy SExpression formatting (#1068)

  • Refactor loading/serializing & file format upgrade (#1070)

  • Refactor ERC by reusing library element check concept (#1119)

  • Factor out graphics code from core logic to editor logic (#1136)


nlnet ngi0

This release was part of the NGI0 Entrust grant we receive from NLnet, which was a huge help for us to get this work done. We are very thankful for their support.

Also a big thank you to the community helping us with translations, pull requests, donations and other contributions!


The release can be downloaded for all major operating systems from our download page:

If you like LibrePCB, please consider making a small donation to support the ongoing development.
Thank you!