Online PCB viewers, ranked · #2 of 6
Altium 365 Viewer
Verdict: The widest format list for a quick look, strongest on Altium and Eagle files; uploads are temporary unless you save them to Altium 365.
Altium 365 Viewer is Altium's free-standing web viewer: drag in a design or a zipped package and it opens schematic, PCB, 3D and BOM views in the browser.
Its reach is the point. Few viewers open Altium and Eagle sources natively, and it also reads Gerber and ODB++ manufacturing data and can compare two Gerber sets graphically.
It is built for a look, not a home. The design stays for your browser session, a shared link lasts a limited time, and keeping it longer means saving to an Altium 365 personal space.
Who it suits
Anyone handed an Altium, Eagle, Gerber or ODB++ file who needs to look at it once, without the CAD tool.
What it costs
No price is shown on the viewer page. Check altium.com/viewer for current terms.
Best for
- Opening an Altium or Eagle design someone sent you
- Comparing two Gerber sets before a re-spin
- Embedding a design view on a forum or project page
Not for
- KiCad projects you depend on: KiCad support is in beta
- Keeping a board and its versions somewhere for ongoing review
Strengths
- Opens Altium Designer (SchDoc, PcbDoc), Eagle (SCH, BRD), Gerber RS-274X and X2, and ODB++
- Schematic, PCB, 3D and BOM views with search, cross-probing and component inspection
- 2D measurements, layer stack view and graphical Gerber compare
- Embed snippet for putting a design on your own site or forum
Limits
- KiCad support is labelled beta, and the KiCad file types it lists are .pro, .sch, .kicad_pcb and .lib: check that newer .kicad_sch schematics open
- An upload lasts for your browser session; shared links stay up for a limited period
- Files go to Altium's servers, under its privacy policy and terms
- No version history unless you save to a personal Altium 365 space
On the six criteria
| Criterion | Altium 365 Viewer |
|---|---|
| File formats | YesAltium (SchDoc, PcbDoc), Eagle (SCH, BRD), Gerber RS-274X and X2, ODB++, KiCad in beta. ZIP, 7z or RAR packages. |
| Layers | YesLayer controls, layer stack view and 2D measurements. |
| 3D | Yes3D view of the board. |
| BOM | YesBOM view and an interactive assembly view that steps through it. |
| Privacy | PartlyUpload is removed when you close the tab, unless you share or save it. Files are processed on Altium's servers. |
| Sharing | PartlyLink anyone can open, for a limited period; embed code; save to a personal Altium 365 space. |
Sources
Checked against these pages on 10 November 2026. Look there for anything that may have changed since.