Show HN: ChartGPU – WebGPU-powered charting library (1M points at 60fps)

Re:Show HN: ChartGPU – WebGPU-powered charting library (1M p... by huntergemmer on Wednesday January 21, 2026 @10:51PM (#46715091)

Update: Pushed some improvements to the candlestick streaming demo based on feedback from this thread.

You can now render up to 5 million candles. Just tested it - Achieved 104 FPS with 5M candles streaming at 20 ticks/second.

Demo: https://chartgpu.github.io/ChartGPU/examples/candlestick-str...

Also fixed from earlier suggestions and feedback as noted before:

- Data zoom slider bug has been fixed (no longer snapping to the left or right) - Idle CPU usage bug (added user controls along with more clarity to 1M point benchmark)

13 hours on the front page, 140+ comments and we're incorporating feedback as it comes in.

This is why HN is the best place to launch. Thanks everyone :)

[ Parent | on HN ]

Re:Show HN: ChartGPU – WebGPU-powered charting library (1M p... by mcintyre1994 on Thursday January 22, 2026 @02:49AM (#46716386)

Pretty sure you have an extra 60x multiplier on all those time frames. Eg 1s shows 1 minute, 15m looks like 15 hours, 1D looks like 2 months.

[ Parent | on HN ]