Open SchLib files in your browser
The schematic symbols Altium Designer draws parts with, shared by part makers and libraries online. Open a library right here and flip through every symbol, with no CAD app. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your board opens as it's made, from the top and from below, with its polygons as Altium last poured them, a schematic sheet by sheet in Altium's colors, and a library a footprint or symbol at a time.
- Every layer • Hide one or show one alone
- A board's top and, mirrored beside it, its bottom
- Search its text • Designators, values and net labels
- Export • PNG, SVG, PDF and the bill of materials
About SchLib
A symbol is how a part looks on a schematic: its body and its pins with their names and numbers. Altium has kept them in .SchLib libraries since Protel DXP in 2002, beside the footprints of .PcbLib libraries that place the same parts on a board.
A SchLib is a Compound File with a storage for each symbol, holding its records: the part, its lines, rectangles, arcs and pictures, its pins with their names, numbers and kinds, its designator and parameters, and the footprints it's tied to. A part like a quad op amp has a part for each of its four amplifiers.
Filepeek reads it in your browser and lists every symbol by its name, each opening as a page of its own, its parts side by side. Pins show their names inside the body and their numbers along their lines, with the dots, clocks and arrows Altium draws, Show details gives the symbol's description, and Export saves PNG, SVG or PDF.
Altium symbol library
.schlib
Format
- MIME type
- application/octet-stream
- Made by
- Altium, which began as Protel
- Released
- 2002
Inside the file
- Holds
- Symbols, each in a storage of its own
- Symbols
- A body, pins, designator and parameters
- Parts
- One or more, like a quad op amp's four
- File
- A Compound File
Opens in every browser
Filepeek opens Altium symbol libraries in Chrome, Edge, Firefox and Safari. On their own, browsers download them, and Altium Designer runs only on Windows.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Apps that open SchLib
- WindowsAltium Designer, paid • KiCad imports it, free
- MacKiCad imports it, free
- iPhone and iPadNo app built in opens it
- AndroidNo app built in opens it
Questions
How do I open a .SchLib file without Altium?
Drop it on this page or press Peek a SchLib. Its symbols are listed down the left, each opening as a page. KiCad, which is free, imports them to use in its own schematics.
Why does my symbol show several copies?
It has several parts, like the four amplifiers of a quad op amp, each placed on a schematic on its own. They show side by side, each named under it.
Where is the footprint?
A symbol only names its footprint, which lives in a .PcbLib. Show details gives its description, and the footprint opens from its PcbLib.