Open SR files in your browser
The capture PulseView and sigrok-cli save from a logic analyzer or a scope. Open one right here, every probe on one time ruler, with no PulseView. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your capture opens with each probe's bits and each analog channel along one time ruler, at its sample rate.
- Every probe's bits • Every analog channel's curve
- Two cursors that snap to edges • The time, its frequency and how long it's high
- Find a probe by its name
- Export • PNG, CSV, or the capture as VCD
About SR
sigrok is the free software behind PulseView and sigrok-cli, which talk to hundreds of logic analyzers, oscilloscopes and meters. A capture saves as an .sr session, which anyone can open in PulseView to look at the same signals.
An .sr is a ZIP: a metadata file naming the device, the sample rate and each probe, the logic samples in numbered chunks with a bit for each probe, and each analog channel's samples as floats in chunks of their own.
Filepeek reads it in your browser and draws every probe as its bits and every analog channel as its curve, on one time ruler at the capture's rate. Drag or pinch to move and zoom, put two cursors for the time between them, its frequency and how long a probe was high, find a probe by its name, and save the view as PNG, the samples between the cursors as CSV, or the capture as a VCD for a simulator's viewer.
sigrok session file
.sr
Format
- MIME type
- application/vnd.sigrok.session
- Made by
- The sigrok project
Inside the file
- Metadata
- The device, the sample rate and each probe's name
- Logic
- A bit for each probe, sample by sample
- Analog
- Each channel's samples as floats
- Package
- A ZIP of numbered chunks
Opens in every browser
Filepeek opens .sr files in Chrome, Edge, Firefox and Safari, logic and analog. On their own, browsers only download them.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Apps that open SR
- WindowsPulseView, free
- MacPulseView, free
- iPhone and iPadNo app opens it
- AndroidNo app opens it
Questions
How do I open an SR file without PulseView?
Drop it on this page or choose Peek an SR. Every probe opens on one time ruler in your browser, on a phone too.
Can it decode I²C, SPI or UART?
No. Filepeek shows each probe's bits and the time between edges, and PulseView's protocol decoders read the bytes they carry.
Can I measure a signal's frequency?
Yes. Put cursor A on one edge and cursor B on the next like it, by shift-click or Measure, and the strip shows the time between them and its frequency. The probe's card shows how long it was high between them.
Can I turn a capture into a VCD?
Yes. Choose Export, then Save as VCD, for every probe's changes and each analog channel's samples as reals, which GTKWave and other viewers read.